Cosmology and astrophysics with galaxy clusters
|
|
- Austin Floyd
- 5 years ago
- Views:
Transcription
1 Multiwavelength Cosmology, Mykonos Island, June 18 th 2003 Cosmology and astrophysics with galaxy clusters Stefano Borgani Dept. of Astronomy, Univ. of Trieste (a) Cosmology with galaxy clusters after WMAP: What did WMAP tell us about cosmological parameters? Can we learn something more/different from LSS/clusters? (b) Toward precision cosmology with clusters (mostly X-ray) Current status of parameter constraints (σ 8 Ω m ) What's needed to do any better? (c) Cluster cosmology or astrophysics: the role of hydro simulations.
2 The COBE and WMAP Snapshots
3 Cosmology with WMAP (I) Spergel et al. (2003) see talk by N. Wright WMAP with no priors: acceptable with Ω Λ =0: Ω M = 1.28, H 0 = 32.5 WMAP + H 0 >50 (weak pr.) 0.98 < Ω tot < 1.08 at 95% c.l. WMAP + PL ΛCDM h = 0.72 ± 0.05 (68% c.l.) n s = 0.99 ± 0.04 τ= ± σ 8 = 0.9 ± 0.1 Ω b = ± Ω m = 0.29 ± 0.07
4 Cosmology with WMAP (I) Spergel et al. (2003) see talk by N. Wright WMAP with no priors: acceptable with Ω Λ =0: Ω M = 1.28, H 0 = 32.5 WMAP + H 0 >50 (weak pr.) 0.98 < Ω tot < 1.08 at 95% c.l. WMAP + PL ΛCDM h = 0.72 ± 0.05 (68% c.l.) n s = 0.99 ± 0.04 τ= ± σ 8 = 0.9 ± 0.1 Ω b = ± Ω m = 0.29 ± 0.07
5 Cosmology with WMAP (II) Spergel et al. (2003) WMAP + CBI + ACBAR + 2dFGRS + Ly-a: n s = 0.93 ± 0.03 dn s /dlnk = ± Ω b = ± Ω m = 0.27 ± 0.04 σ 8 = 0.84 ± 0.04 (0.78 ; Ω m =0.3) h = 0.71 ± 0.04 τ = 0.17 ± 0.06
6 Beyond the standard LCDM model WMAP and Dark Energy (Spergel et al. 03) = w p ; w 1 w < (95% c.l.) Non-Gaussianity (Komatsu et al. 03) Φ(x): Bardeen curvature perturbation Φ L : Gaussian perturb. with Φ L =0 58 < f NL < 134 (95%c.l.) f NL ~10-1 for single scalar field inflation.
7 Beyond the standard LCDM model WMAP and Dark Energy (Spergel et al. 03) = w p ; w 1 w < (95% c.l.) Non-Gaussianity (Komatsu et al. 03) Φ(x): Bardeen curvature perturbation Φ L : Gaussian perturb. with Φ L =0 58 < f NL < 134 (95%c.l.) f NL ~10-1 for single scalar field inflation.
8 Why clusters are useful for cosmology?
9 Because they are the largest collapsed Why clusters are useful for cosmology? structures in the Universe!
10 Because they are the largest collapsed Why clusters are useful for cosmology? structures in the Universe! (a) Gas fraction f gas : IF clusters are fair containers of cosmic baryons (see talks by S. Allen and S. Ettori) Local clusters: Ω m once Ω b known from BBN and/or CMB (weak dependence on H 0 ). Distant clusters: f gas (z) = f gas [d A (H 0,Ω m,ω DE,w)] = f gas (z=0) geometry. (b) Mass function of clusters and its evolution: Direct probe of σ 8, i.e. P(k) amplitude at the cluster mass scale; Dynamical (not geometrical) probe of cosmology, through the linear growth rate of perturbations: D(z) = D(z; Ω m,ω DE,w) (c) Large-scale distribution and clustering of clusters: Geometrial probe through the P(k) shape (assuming the DM content); Cosmology with clustering evolution along the light-cone: ξ(r,z), P(k,z)
11 SB & Guzzo '01 Evolution of hot (T> 3 kev) clusters
12 What's needed for cosmology with clusters? (a) A reliable and flexible tool to compute the mass function for a given cosmological model (b) An efficient method to find clusters: sensitivity to detect clusters at high redshift negligible impact of false and spurious detections. (c) A precise knowledge of the selection function searching volume within which a cluster is found. : sky-coverage : luminosity distance : flux : max. z for the given f lim (d) A reliable method to measure cluster masses better if given by the observable on which cluster selection is based.
13 The Press-Schechter Approach and Beyond Assumptions: Spherical collapse + Gaussian density fluctuations d c : critical density constrast for spherical collapse (=1.69 for EdS) p(d c,m): Gaussian probability for a perturbation of mass M to exceed d c Mass variance at the scale M and redshift z for the filter function W M (k). D(z)=D(Ω m,ω DE,w): linear growth rate of density fluctuations. Too many low-m and too few high-m halos predicted; Need to account for the non-spherical nature of collapse (e.g. Sheth & Tormen 1999)
14 Toward a Universal Mass Function Testing against N-body over a large dynamical range (a) Corrections to the PS MF can be found, which has still a universal (i.e. model-independent) shape. Jenkins et al. 2001
15 Toward a Universal Mass Function Testing against N-body over a large dynamical range Evrard et al. '02 (a) Corrections to the PS MF can be found, which has still a universal (i.e. Model-independent) shape. (b) Agreement with the simulated MF always within <10% at the cluster mass-scale.
16 Toward a Universal Mass Function Testing against N-body over a large dynamical range White '02 (a) Corrections to the PS MF can be found, which has still a universal (i.e. Model-independent) shape (Jenkins et al. '01). (b) Agreement with the simulated MF always within <10% at the cluster mass-scale (Evrard et al. '02). (c) Effects of cosmic variance may be comparable to statistical uncertainties (Hu & Kravtsov '02, White '02).
17 The mass function as a cosmological test Changing the P(k) normalization Changing the density parameter RBN '02
18 Galaxy clusters and Dark Energy Henry '00 Henry 2000: local XTF from 20 HEAO-1 clusters and XTF evolution from 16 EMSS clusters with ASCA T X : Weak contraints on Ω Λ
19 Galaxy clusters and Dark Energy Henry '00 Henry 2000: local XTF from 20 HEAO-1 clusters and XTF evolution from 16 EMSS clusters with ASCA T X : Weak contraints on Ω Λ Schuecker et al 2002: REFLEX n(z) (assuming CDM) + Type-Ia SN: Purely geometrical; DE consistent with a Λ-term. Schuecker et al. '02
20 Galaxy clusters and Dark Energy Henry 2000: local XTF from 20 HEAO-1 clusters and XTF evolution from 16 EMSS clusters with ASCA T X : Weak contraints on Ω Λ Schuecker et al 2002: REFLEX n(z) (assuming CDM) + Type-Ia SN: Purely geometrical; DE consistent with a Λ-term. Constraints from future widearea deep X-ray and SZ surveys (DUET Team '01, Hu & Kravtsov '02, Majumdar & Mohr '03).
21 Galaxy clusters and non-gaussianity Cluster n(m) sensitive to the high-density tail of the PDF (Lucchin & Matarrese 88, Oukbir et al. 97, Koyama et al. 99, Matarrese et al. 00, Willick 00). P(δ M ): non-gaussian probability density fct. Robinson et al. 2000: How much non- Gaussianity is needed for Ω m =1 to agree with the XTF evolution? Robinson et al.00
22 Galaxy clusters and non-gaussianity Cluster n(m) sensitive to the high-density tail of the PDF (Lucchin & Matarrese 88, Oukbir et al. 97, Koyama et al. 99, Matarrese et al. 00, Willick 00). P(δ M ): non-gaussian probability density fct. Robinson et al. 2000: How much non- Gaussianity is needed for Ω m =1 to agree with the XTF evolution? Robinson et al.00 Komatsu et al 2003: What's required to do any better than WMAP with high-z clusters?
23 Why X-ray X clusters? Search volume of X-ray surveys (1) Clusters are sharply defined in X-ray: dl X /dv ρ g 2 T 1/2 (2) Sky coverage and search volume are well defined. RBN '02 (3) L X and, even better, T X, are closely related to the cluster collapsed mass.
24 The L X -z coverage of X-ray surveys RDCS 115 Clusters Spectr. Conf. 37 at z> at z> at z> at z> 1 Chandra/XMM Limit
25 X-ray surveys: where are we? RBN '02 WFXT DUET
26 RBN02 Distant (z>0.7) clusters in the Chandra archive Redshift Luminosity 0.75 Mpc
27 The Cluster X-ray X LF Remarkable agreement among all the local surveys (unlike for the galaxy LF) Robust reference for the evolution of the cluster population!
28 The Cluster X-ray X LF Remarkable agreement among all the local surveys (unlike for the galaxy LF) Bulk of cluster population already in place at z 1. Moderate negative evolution in the bright-end. Robust reference for the evolution of the cluster population!
29 How to estimate cluster masses? (a) Dynamics of the collisionless component (galaxies) Assuming virialization of a spherical system: s V : velocity dispersion of member galaxies. R V : virial radius. Applied to: ENACS, CNOC, 2dFGRS, SDSS (b) Dynamics of the collisional component (gas) Hydrostatic equilibrium + isothermal b-model: β = β spec = µm p σ r / k B T ( from M-T of simulations) k B T from X-ray and SZ observations. (c) Weak and strong gravitational lensing (d) Phenomenological scaling relations (talks by S. Ettori) L X ~ T a (1+z) A ; L X ~ M g (1+z) G
30 The observed L -T X X relation The L X -T T evolution: Mushotzky & Scharf (1996) SB, Rosati et al. (2001) Holden et al. (2002) Novicki et al. (2002) Ettori et al. (2003) Steepening below T~1 kev. No evidence for evol. out to z ~1 (cf. Vikhlinin et al. 2002) See talk by S. Ettori
31 The mass-temperature relation Isothermal gas + β-model (Finoguenov, Reiprich & Boehringer '01) Resolved T X profiles with Beppo-SAX (Ettori, De Grandi & Molendi '02) ~40% lower normalization than expected from simulations: β spec 0.7 vs. β spec 1 Possibly steeper for groups. Nature of the scatter: (a) intrinsic vs. observational (b) how is it distributed? Need to be extended to distant clusters (see talk by S.Ettori)
32 The observed M-LM X relation Reiprich & Boehringer 02 ROSAT + ASCA Hydrostatic equil. + isothermal -model Resolved T X profiles with Beppo-SAX (Ettori, De Grandi & Molendi '02) Well-defined relation with ~20-40% scatter! To be extended at high z with Chandra/XMM data (Ettori et al., in prep)
33 Constraints from flux- limited surveys SB, Rosati et al. '01 Rosati, SB & Norman '03 RDCS 160 sq. deg RDCS: 104 clusters F lim = cgs out to z = 0.83 (Rosati, SB, Norman 2002) 160 sq.deg.: 200 clusters F lim = cgs out to z = 0.58 (Vikhlinin et al. '98, Mullis et al. '03) Remarkable agreement!!
34 Constraints from flux- limited surveys SB, Rosati et al. '01 Rosati, SB & Norman '03 Results dependent on ICM physics... Ω m <0.6 at >3σ! σ 8 somewhat small: σ 8 = 0.72 ± 0.05 (Ω m = 0.3) for the reference analysis. cf. poster by Vauclair et al. and talk by A. Blanchard
35 What's the correct σ 8? Pierpaoli et al. '01 As of 2001 (Pierpaoli et al. 01) local XTF and M-T relation from simulations: σ 8 Ω m 0.53 = 0.50 ± 0.06 σ 8 = 1.02 ± 0.07 for Ω m = 0.3 Seljak 02: observed M-T lower than simulated σ 8 = 0.77 ± 0.06 for Ω m = 0.3
36 What's the correct σ 8? As of 2001 (Pierpaoli et al. 01) local XTF and M-T relation from simulations: σ 8 Ω m 0.53 = 0.50 ± 0.06 σ 8 = 1.02 ± 0.07 for Ω m = 0.3 Seljak 02: observed M-T lower than simulated σ 8 = 0.77 ± 0.06 for Ω m = 0.3 Schuecker et al. 02: n(z) and ξ cl (r) from REFLEX (CDM + prior on h) σ 8 = 0.71 ± 0.03 for Ω m = 0.3 Schuecker et al '02
37 What's the correct σ 8? Ikebe et al. '02 Pierpaoli et al. '01 As of 2001 (Pierpaoli et al. 01) local XTF and M-T relation from simulations: σ 8 Ω m 0.53 = 0.50 ± 0.06 σ 8 = 1.02 ± 0.07 for Ω m = 0.3 Seljak 02: observed M-T lower than simulated σ 8 = 0.77 ± 0.06 for Ω m = 0.3 Schuecker et al. 02: n(z) and ξ cl (r) from REFLEX (CDM + prior on h) σ 8 = 0.71 ± 0.03 for Ω m = 0.3 Ikebe et al. 02: local XTF from HIFLUGCS + uncertainties in the M-T relation: Ω m = σ 8 = (see also Viana et al. '03)
38 What's the correct σ 8? Ikebe et al. '02 As of 2001 (Pierpaoli et al. 01) local XTF and M-T relation from simulations: σ 8 Ω m 0.53 = 0.50 ± 0.06 σ 8 = 1.02 ± 0.07 for Ω m = 0.3 Seljak 02: observed M-T lower than simulated σ 8 = 0.77 ± 0.06 for Ω m = 0.3 Schuecker et al. 02: n(z) and ξ cl (r) from REFLEX (CDM + prior on h) σ 8 = 0.71 ± 0.03 for Ω m = 0.3 Ikebe et al. 02: local XTF from HIFLUGCS + uncertainties in the M-T relation: Ω m = σ 8 =
39 Intrinsic scatter in the M-LM X relation Pierpaoli, SB, Scott & White 03 Convolution with intrinsic (log-normal) scatter inflates the predicted XLF Lower σ 8 required to fit the observed XLF
40 Intrinsic scatter in the M-LM X relation Pierpaoli, SB, Scott & White 03 Convolution with intrinsic (log-normal) scatter inflates the predicted XLF Lower σ 8 required to fit the observed XLF
41 Intrinsic scatter in the M-LM X relation Pierpaoli, SB, Scott & White 03 Convolution with intrinsic (log-normal) scatter inflates the predicted XLF Lower σ 8 required to fit the observed XLF
42 Intrinsic scatter in the M-LM X relation Pierpaoli, SB, Scott & White 03 Convolution with intrinsic (log-normal) scatter inflates the predicted XLF Lower σ 8 required to fit the observed XLF No scatter 20% 40%
43 Marginilize over the statistical errors Pierpaoli, SB, Scott & White 03 Statistical errors in the M-L X relation widen the confidence contours. Important question: What's the prior for the error distribution?
44 Marginilize over the statistical errors Pierpaoli, SB, Scott & White 03 Error marginal. Statistical errors in the M-L X relation widen the confidence contours. Important question: What's the prior for the error distribution? No error
45 A Tree+SPH simulation of of the the cosmic web (see (see poster poster by by G. G. Murante) Murante) Collab. with A. Diaferio, K. Dolag, L. Moscardini, G. Murante, V. Springel, G. Tormen, L.Tornatore, P.Tozzi Code: Tree + SPH GADGET (Springel et al. 2001, 2002) Radiative cool.+uv backgr. Multiphase model for star-formation and galactic winds. ΛCDM cosmology: Ω m = 1-Ω L =0.3, Ω bar 0.02h -2, h=0.7, σ 8 =0.8 L = 192 h -1 Mpc ; N gas =N DM = ε Pl = 7.5 h -1 kpc ; m gas = h -1 M 40,000 CPU hours and 100 Gb RAM, using 64 processors of IBM-SP4 in CINECA (INAF grant); about 1.2 Tb of data produced.
46 ~ 400 clusters with > 10 4 particles. X-ray cluster scaling properties and nature of their scatter. Contribution of diffuse gas to the soft X-ray X background. SZ effect from clumped and diffuse gas. Comparing cluster masses: X-ray, lensing, optical and SZ. Diffuse intracluster light on a statistical basis. Zoom-in simulations of clusters and other interesting regions. Populate the box with simulated and SAM galaxies.
47 ~ 400 clusters with > 10 4 particles. X-ray cluster scaling properties and nature of their scatter. Contribution of diffuse gas to the soft X-ray X background. SZ effect from clumped and diffuse gas. Comparing cluster masses: X-ray, lensing, optical and SZ. Diffuse intracluster light on a statistical basis. Zoom-in simulations of clusters and other interesting regions. Populate the box with simulated and SAM galaxies.
48 ~ 400 clusters with > 10 4 particles. X-ray cluster scaling properties and nature of their scatter. Contribution of diffuse gas to the soft X-ray X background. SZ effect from clumped and diffuse gas. Comparing cluster masses: X-ray, lensing, optical and SZ. Diffuse intracluster light on a statistical basis. Zoom-in simulations of clusters and other interesting regions. Populate the box with simulated and SAM galaxies.
49 The L X -T X Relation at z=0 The observed L X -T X is reproduced at the cluster scale, T X >2 kev. Up-scattered points due to the contribution of ''cooling cores''. No bending at the scale of groups, T X <1 kev. Need to increase the feedback efficiency? Account for the contribution from cooling cores.
50 The mass-temperature relation at z=0 Normalization ~30%higher than observed: No much effect of cooling in increasing T X in central regions. Only possible by further steepening T X profiles! Small but sizeable effect when using emissivity in a finite energy band.
51 Observational biases in the M-T X scaling? β-model for ρ gas (r). T X profiles from polytropic model: T(r) ~ [ρ[ gas (r)] γ-1 Mass computed from hydrostatic equilibrium: Actual M-T relation possibly higher than measured: β spec spec 1 Need to mimick more closely the observational setup.
52 Observational biases in the M-T X scaling? β-model for ρ gas (r). T X profiles from polytropic model: T(r) ~ [ρ[ gas (r)] γ-1 Mass computed from hydrostatic equilibrium: Actual M-T relation possibly higher than measured: β spec spec 1 Need to mimick more closely the observational setup.
53 Observational biases in the M-T X scaling? β-model for ρ gas (r). T X profiles from polytropic model: T(r) ~ [ρ[ gas (r)] γ-1 Mass computed from hydrostatic equilibrium: Actual M-T relation possibly higher than measured: β spec spec 1 Need to mimick more closely the observational setup.
54 The cluster XLF Local XLF: (a) Excess of low L X system Simulated groups are too bright. (b) Excellent agreement in the XLF bright end. Lack of evolution of the XLF faint end out to z=1. In line with observational results from deep surveys.
55 The cluster XLF Local XLF: (a) Excess of low L X system Simulated groups are too bright. (b) Excellent agreement in the XLF bright end. Lack of evolution of the XLF faint end out to z=1. In line with observational results from deep surveys.
56 The cluster XTF Local XTF: Good agreement with the XTF by Ikebe et al.('03) The local XTF supports σ 8 0.8
57 The cluster XTF Local XTF: Good agreement with the XTF by Ikebe et al.('03) The local XTF supports σ The XTF of distant clusters: Lack of significant evolution for T<3 kev out to z=1. Marginal evidence for a deficit of hotter systems.
58 Concluding remarks: (a) Galaxy clusters ARE cosmological probes! Evolution of the mass function: 0.2 < m < 0.5 at > 3 c.l. = ± 0.05 (stat.) ± 0.05 (syst.) for m =0.3 Tension with WMAP results? Lower than σ 8 from high from high-l C l excess? (b) What's needed for precision (post-wmap) cosmology? ( m and 8 to < 10%, dark energy, non-gaussianity...) Mass estimates from as many as possible independent methods (X-ray, σ v, lensing, SZ) for ~100 clusters out to z~0.5. Brute force: massive surveys (~10 4 clusters) to kill systematics with statistics. Use hydro symulations to better understand what a cluster is.
59 Cosmology and Astrophysics with Galaxy Clusters
60 Which is the correct value of σ 8? Pierpaoli, SB, Scott & White 03
61 The cluster XLF Local XLF: (a) Excess of low L X system Simulated groups are too bright. (b) Excellent agreement in the XLF bright end. Lack of evolution of the XLF faint end out to z=1. In line with observational results from deep surveys.
Cosmology with galaxy clusters?
Cosmology with galaxy clusters? Cosmology with the cluster mass fct. Piero Rosati (ESO, Garching) Paolo Tozzi (INAF-OAT, Trieste) Colin Norman (JHU, Baltimora) Elena Pierpaoli (Princeton Univ.) Douglas
More informationGalaxy Clusters As Cosmological Tools and Astrophysical Laboratories
Proceedings of The Riddle of Cooling Flows in Galaxies and Clusters of Galaxies: E4 May 31 June 4, 2003, Charlottesville, Virginia, USA Ed. T. H. Reiprich, J. C. Kempner, & N. Soker Galaxy Clusters As
More informationTesting gravity on cosmological scales with the observed abundance of massive clusters
Testing gravity on cosmological scales with the observed abundance of massive clusters David Rapetti, KIPAC (Stanford/SLAC) In collaboration with Steve Allen (KIPAC), Adam Mantz (KIPAC), Harald Ebeling
More informationPrecision Cosmology with X-ray and SZE Galaxy Cluster Surveys?
Precision Cosmology with X-ray and SZE Galaxy Cluster Surveys? Joe Mohr University of Illinois Outline SZE and X-ray Observations of Clusters Cluster survey yields and cosmology Precision cosmology and
More informationX-ray and Sunyaev-Zel dovich Effect cluster scaling relations: numerical simulations vs. observations
X-ray and Sunyaev-Zel dovich Effect cluster scaling relations: numerical simulations vs. observations Daisuke Nagai Theoretical Astrophysics, California Institute of Technology, Mail Code 130-33, Pasadena,
More informationBaryon Census in Hydrodynamical Simulations of Galaxy Clusters
Baryon Census in Hydrodynamical Simulations of Galaxy Clusters Susana Planelles (Univ.Trieste-INAF) Collaborators: S.Borgani (Univ. Trieste-INAF), G.Murante (INAF Torino), L.Tornatore (Univ. Trieste),
More informationCHANDRA CLUSTER COSMOLOGY PROJECT III: COSMOLOGICAL PARAMETER CONSTRAINTS
The Astrophysical Journal, in press (692, 2009 February 10) Preprint typeset using L A TEX style emulateapj v. 04/20/08 CHANDRA CLUSTER COSMOLOGY PROJECT III: COSMOLOGICAL PARAMETER CONSTRAINTS A. Vikhlinin
More informationarxiv:astro-ph/ v1 1 Nov 2006
Modeling Chandra X-ray observations of Galaxy Clusters using Cosmological Simulations arxiv:astro-ph/0611013v1 1 Nov 2006 Daisuke Nagai 1, Andrey V. Kravtsov 2, and Alexey Vikhlinin 3,4 1 Theoretical Astrophysics,
More informationObservational Cosmology
(C. Porciani / K. Basu) Lecture 7 Cosmology with galaxy clusters (Mass function, clusters surveys) Course website: http://www.astro.uni-bonn.de/~kbasu/astro845.html Outline of the two lecture Galaxy clusters
More informationMapping Hot Gas in the Universe using the Sunyaev-Zeldovich Effect
Mapping Hot Gas in the Universe using the Sunyaev-Zeldovich Effect Eiichiro Komatsu (Max-Planck-Institut für Astrophysik) Probing Fundamental Physics with CMB Spectral Distortions, CERN March 12, 2018
More informationSébastien C. VAUCLAIR, OMP, Toulouse
XMM-Newton Ω-Project Ω matter from cluster evolution Collaborators : Sébastien C. VAUCLAIR, OMP, Toulouse J.G. Bartlett (PI) J.P. Bernard A. Blanchard M. Boer D.J. Burke* C.A. Collins* M. Giard D.H. Lumb
More informationCosmology and Astrophysics with Galaxy Clusters Recent Advances and Future Challenges
Cosmology and Astrophysics with Galaxy Clusters Recent Advances and Future Challenges Daisuke Nagai Yale University IPMU, July 15 th, 2010 Large-scale structure in the Universe SDSS (optical) Today δρ/ρ>>1
More informationModelling the Sunyaev Zeldovich Scaling Relations
Modelling the Sunyaev Zeldovich Scaling Relations (Implication for SZ Power Spectrum) Anya Chaudhuri (with Subha Majumdar) Tata Institute of Fundamental Research 31 Oct 2009 Outline Sunyaev Zeldovich effect
More information2. What are the largest objects that could have formed so far? 3. How do the cosmological parameters influence structure formation?
Einführung in die beobachtungsorientierte Kosmologie I / Introduction to observational Cosmology I LMU WS 2009/10 Rene Fassbender, MPE Tel: 30000-3319, rfassben@mpe.mpg.de 1. Cosmological Principles, Newtonian
More informationCHANDRA CLUSTER COSMOLOGY PROJECT III: COSMOLOGICAL PARAMETER CONSTRAINTS
Submitted to the ApJ, 5/12/08 Preprint typeset using L A TEX style emulateapj v. 04/20/08 CHANDRA CLUSTER COSMOLOGY PROJECT III: COSMOLOGICAL PARAMETER CONSTRAINTS A. Vikhlinin 1,2,A.V.Kravtsov 3,R.A.Burenin
More informationCourse of Galaxies course organizer: Goeran Ostlin ESSAY. X-ray physics of Galaxy Clusters
Course of Galaxies course organizer: Goeran Ostlin ESSAY X-ray physics of Galaxy Clusters Student: Angela Adamo angela@astro.su.se fall 2006 Front:-The double cluster A1750. The contours of the XMM-Newton
More informationClusters and cosmology
Clusters and cosmology The KICP Inaugural Symposium, Dec 12, 2005 Mike Gladders, Carnegie Observatories Clusters Outline: and cosmology Codex Aggereris Caelestise (The Book of celestial Aggregates a primer)
More informationCosmology with Galaxy Clusters. V. The Cluster Mass Function
Cosmology with Galaxy Clusters V. The Cluster Mass Function Baryon Fraction Summary Assuming clusters large enough to be representative, mass composition should match Universe observe fb and constrain
More informationSummer School on Cosmology July Clusters of Galaxies - Lecture 2. J. Mohr LMU, Munich
2354-23 Summer School on Cosmology 16-27 Clusters of Galaxies - Lecture 2 J. Mohr LMU, Munich SPT Outline ICTP Summer School on Cosmology, Trieste, e-rosita ESA/SRE(211)12 July 211 Galaxy Clusters and
More informationThe Formation and Evolution of Galaxy Clusters
IAU Joint Discussion # 10 Sydney, July, 2003 The Formation and Evolution of Galaxy Clusters Simon D.M. White Max Planck Institute for Astrophysics The WMAP of the whole CMB sky Bennett et al 2003 > 105
More informationLooking into CDM predictions: from large- to small-scale scale structures
Looking into CDM predictions: from large- to small-scale scale structures 20h -1 Mpc 5h -1 Mpc 75h -1 Mpc SPH simulation in ΛCDM (Yoshikawa et al. 2001) Yasushi Suto Department of Physics The University
More informationDark matter in galaxy clusters
Dark matter in galaxy clusters Steve Allen, KIPAC In collaboration with: David Rapetti (KIPAC) Adam Mantz (KIPAC) Robert Schmidt (Heidelberg) Harald Ebeling (Hawaii) R. Glenn Morris (KIPAC) Andy Fabian
More informationThe Iguaçu Lectures. Nonlinear Structure Formation: The growth of galaxies and larger scale structures
April 2006 The Iguaçu Lectures Nonlinear Structure Formation: The growth of galaxies and larger scale structures Simon White Max Planck Institute for Astrophysics z = 0 Dark Matter ROT EVOL Cluster structure
More informationClusters: Observations
Clusters: Observations Last time we talked about some of the context of clusters, and why observations of them have importance to cosmological issues. Some of the reasons why clusters are useful probes
More informationcluster scaling relations and mass definitions
cluster scaling relations and mass definitions Andrey Kravtsov Department of Astronomy & Astrophysics Kavli Institute for Cosmological Physics The University of Chicago Abell 85 SDSS Abell 85 SDSS/ Abell
More informationNew techniques to measure the velocity field in Universe.
New techniques to measure the velocity field in Universe. Suman Bhattacharya. Los Alamos National Laboratory Collaborators: Arthur Kosowsky, Andrew Zentner, Jeff Newman (University of Pittsburgh) Constituents
More informationThe theoretical view of high-z Clusters. Nelson Padilla, PUC, Chile Pucón, November 2009
The theoretical view of high-z Clusters Nelson Padilla, PUC, Chile Pucón, November 2009 The Plan: 1) To see what the observations are telling us using models that agree with the cosmology, and with other
More informationLarge-Scale Structure
Large-Scale Structure Evidence for Dark Matter Dark Halos in Ellipticals Hot Gas in Ellipticals Clusters Hot Gas in Clusters Cluster Galaxy Velocities and Masses Large-Scale Distribution of Galaxies 1
More informationSome issues in cluster cosmology
Some issues in cluster cosmology Tim McKay University of Michigan Department of Physics 1/30/2002 CFCP Dark Energy Workshop 1 An outline Cluster counting in theory Cluster counting in practice General
More informationCosmological Constraints from the XMM Cluster Survey (XCS) Martin Sahlén, for the XMM Cluster Survey Collaboration The Oskar Klein Centre for
Cosmological Constraints from the XMM Cluster Survey (XCS) Martin Sahlén, for the XMM Cluster Survey Collaboration The Oskar Klein Centre for Cosmoparticle Physics Stockholm University Key Points The XCS
More informationHYDRODYNAMICAL SIMULATIONS OF GALAXY CLUSTERS
HYDRODYNAMICAL SIMULATIONS OF GALAXY CLUSTERS Susana Planelles (UV/OATS) UV collaborators: V. Quilis, M. Perucho, J.M. Martí, E. Ricciardelli OATS-INAF collaborators: S. Borgani, G. Murante, E. Rasia,
More informationTesla Jeltema. Assistant Professor, Department of Physics. Observational Cosmology and Astroparticle Physics
Tesla Jeltema Assistant Professor, Department of Physics Observational Cosmology and Astroparticle Physics Research Program Research theme: using the evolution of large-scale structure to reveal the fundamental
More informationThe PLANCK Cluster Catalog:
The PLANCK Cluster Catalog: SZ/X-ray Expected Properties Antoine Chamballu James G. Bartlett Jean-Baptiste Melin in the framework of the Planck consortium The Planck mission Background Successfully launched
More informationWhere are the missing baryons? Craig Hogan SLAC Summer Institute 2007
Where are the missing baryons? Craig Hogan SLAC Summer Institute 2007 Reasons to care Concordance of many measures of baryon number (BBN, CMB,.) Evolution of our personal baryons (galaxies, stars, planets,
More informationA look into the Dark Universe
Zentrum für Astronomie, Institut für Theoretische Astrophysik Universität Heidelberg Dark Energy dark energy: assumed to drive accelerated cosmic expansion scalar field having negative pressure? early
More informationSimulating non-linear structure formation in dark energy cosmologies
Simulating non-linear structure formation in dark energy cosmologies Volker Springel Distribution of WIMPS in the Galaxy Early Dark Energy Models (Margherita Grossi) Coupled Dark Energy (Marco Baldi) Fifth
More informationHigh redshift clusters and their evolution. M.Arnaud (CEA-Sap Saclay France)
High redshift clusters and their evolution M.Arnaud (CEA-Sap Saclay France) Clusters and structure formation Z= 5 Z= 0 Simulations AMR: Teyssier (2002) Galaxy cluster Primordial fluctuations (DM) that
More informationThe Galaxy Dark Matter Connection
The Galaxy Dark Matter Connection constraining cosmology & galaxy formation Frank C. van den Bosch (MPIA) Collaborators: Houjun Mo (UMass), Xiaohu Yang (SHAO) Marcello Cacciato, Surhud More (MPIA) Kunming,
More information(Toward) A Solution to the Hydrostatic Mass Bias Problem in Galaxy Clusters. Eiichiro Komatsu (MPA) UTAP Seminar, December 22, 2014
(Toward) A Solution to the Hydrostatic Mass Bias Problem in Galaxy Clusters Eiichiro Komatsu (MPA) UTAP Seminar, December 22, 2014 References Shi & EK, MNRAS, 442, 512 (2014) Shi, EK, Nelson & Nagai, arxiv:1408.3832
More informationProbing Dark Matter Halos with Satellite Kinematics & Weak Lensing
Probing Dark Matter Halos with & Weak Lensing Frank C. van den Bosch (MPIA) Collaborators: Surhud More, Marcello Cacciato UMass, August 2008 Probing Dark Matter Halos - p. 1/35 Galaxy Formation in a Nutshell
More informationClusters physics and evolution from new X- ray/sz samples
Clusters physics and evolution from new X- ray/sz samples Monique ARNAUD (CEA Saclay) with Iacopo BARTALUCCI, Jessica DEMOCLES Etienne POINTECOUTEAU, Gabriel PRATT & Planck collaboration thanks to C. JONES
More informationarxiv:astro-ph/ v2 17 Dec 2003
Astronomy & Astrophysics manuscript no. scalaw February 2, 2008 (DOI: will be inserted by hand later) Scaling laws in X-ray Galaxy Clusters at redshift between 0.4 and 1.3 S. Ettori 1, P. Tozzi 2, S. Borgani
More informationThe cosmic background radiation II: The WMAP results. Alexander Schmah
The cosmic background radiation II: The WMAP results Alexander Schmah 27.01.05 General Aspects - WMAP measures temperatue fluctuations of the CMB around 2.726 K - Reason for the temperature fluctuations
More informationX-ray mass proxies from hydrodynamic simulations of galaxy clusters I
Mon. Not. R. Astron. Soc. 416, 801 816 (2011) doi:10.1111/j.1365-2966.2011.18497.x X-ray mass proxies from hydrodynamic simulations of galaxy clusters I D. Fabjan, 1,2,9 S. Borgani, 2,3,4 E. Rasia, 5 A.
More informationPrinceton December 2009 The fine-scale structure of dark matter halos
Princeton December 2009 The fine-scale structure of dark matter halos Simon White Max Planck Institute for Astrophysics The dark matter structure of CDM halos A rich galaxy cluster halo Springel et al
More informationCosmology with Clusters of Galaxies
Cosmology with Clusters of Galaxies arxiv:astro-ph/9901076v1 8 Jan 1999 Neta A. Bahcall Princeton University Observatory Princeton, NJ 08544 December 31, 1998 Abstract Rich clusters of galaxies, the largest
More informationWeighing the Giants:
Weighing the Giants: Accurate Weak Lensing Mass Measurements for Cosmological Cluster Surveys Anja von der Linden Tycho Brahe Fellow DARK Copenhagen + KIPAC, Stanford IACHEC, May 14, 2014 1 Hello! Copenhagen
More informationTwo Topics in Cluster Cosmology: Studying Dark Energy and σ 8
Two Topics in Cluster Cosmology: Studying Dark Energy and σ 8 Subha Majumdar with Anya Chaudhuri, Satej Khedekar, Joe Mohr & Jon Sievers Tata Institute of Fundamental Research Mumbai What are galaxy clusters?
More informationSources of scatter in cluster mass-observable relations
Great Lakes Cosmology Workshop 8, Columbus OH June 2, 2007 Sources of scatter in cluster mass-observable relations Paul Ricker University of Illinois National Center for Supercomputing Applications With
More informationarxiv:astro-ph/ v1 6 Jun 2001
arxiv:astro-ph/0106098v1 6 Jun 2001 THE XMM NEWTON Ω PROJECT J.G. BARTLETT 1,2, N. AGHANIM 3, M. ARNAUD 4, J. PH. BERNARD 3, A. BLANCHARD 1, M. BOER 5, D.J. BURKE 6, C.A. COLLINS 7, M. GIARD 5, D.H. LUMB
More informationThe Millennium Simulation: cosmic evolution in a supercomputer. Simon White Max Planck Institute for Astrophysics
The Millennium Simulation: cosmic evolution in a supercomputer Simon White Max Planck Institute for Astrophysics The COBE satellite (1989-1993) Two instruments made maps of the whole sky in microwaves
More informationConstraints on physics of gas and dark matter from cluster mergers. Maxim Markevitch (SAO)
Constraints on physics of gas and dark matter from cluster mergers Maxim Markevitch (SAO) November 2005 1E 0657 56 Chandra 0.5 Msec image 0.5 Mpc z=0.3 An overheated cluster From M T relation: T= 14 kev:
More informationAST Cosmology and extragalactic astronomy Lecture 7
AST4320 - Cosmology and extragalactic astronomy Lecture 7 Press-Schechter Formalism: applications, origin of the `fudge factor 2, modifications Press-Schechter (PS) Formalism: Preface... PS assumes 1.
More informationCosmology with Peculiar Velocity Surveys
Cosmology with Peculiar Velocity Surveys Simulations Fest, Sydney 2011 Morag I Scrimgeour Supervisors: Lister Staveley-Smith, Tamara Davis, Peter Quinn Collaborators: Chris Blake, Brian Schmidt What are
More informationCosmology. Introduction Geometry and expansion history (Cosmic Background Radiation) Growth Secondary anisotropies Large Scale Structure
Cosmology Introduction Geometry and expansion history (Cosmic Background Radiation) Growth Secondary anisotropies Large Scale Structure Cosmology from Large Scale Structure Sky Surveys Supernovae Ia CMB
More informationPlanck was conceived to confirm the robustness of the ΛCDM concordance model when the relevant quantities are measured with much higher accuracy
12-14 April 2006, Rome, Italy Francesco Melchiorri Memorial Conference Planck was conceived to confirm the robustness of the ΛCDM concordance model when the relevant quantities are measured with much higher
More informationWhere are the missing baryons?
Where are the missing baryons? Qiang Wang (Brandon) B.Sc. Supervisor: Dr Scott Kay School of Physics and Astronomy, University of Manchester 27/29 June 2018 Image from Millennium Simulation 1 Content I.
More informationStructure of the ICM and its Evolution with Redshift: : Status from SZE Observations
Structure of the ICM and its Evolution with Redshift: : Status from SZE Observations Joe Mohr Department of Astronomy, Department of Physics National Center for Supercomputing Applications University of
More informationHot and cooled baryons in smoothed particle hydrodynamic simulations of galaxy clusters: physics and numerics
Mon. Not. R. Astron. Soc. 367, 1641 1654 (2006) doi:10.1111/j.1365-2966.2006.10075.x Hot and cooled baryons in smoothed particle hydrodynamic simulations of galaxy clusters: physics and numerics S. Borgani,
More information2. Lens population. 3. Lens model. 4. Cosmology. z=0.5. z=0
Chuck Keeton Hubble Fellow, University of Chicago ffl Lens statistics probe the volume of the universe to z ο 1 3. ffl Current constraints on Λ. ffl Systematics! ffl Prospects for equation of state (w,
More informationLecture 12 : Clusters of galaxies
Lecture 12 : Clusters of galaxies All sky surveys in the later half of 20th century changed the earlier view that clusters of galaxies are rare and that only a small fraction of galaxies are grouped together
More informationReally, really, what universe do we live in?
Really, really, what universe do we live in? Fluctuations in cosmic microwave background Origin Amplitude Spectrum Cosmic variance CMB observations and cosmological parameters COBE, balloons WMAP Parameters
More informationRupert Croft. QuickTime and a decompressor are needed to see this picture.
Rupert Croft QuickTime and a decompressor are needed to see this picture. yesterday: Plan for lecture 1: History : -the first quasar spectra -first theoretical models (all wrong) -CDM cosmology meets the
More informationStructure formation in the concordance cosmology
Structure formation in the Universe, Chamonix, May 2007 Structure formation in the concordance cosmology Simon White Max Planck Institute for Astrophysics WMAP3 team WMAP3 team WMAP3 team WMAP3 team In
More informationCOSMIC MICROWAVE BACKGROUND ANISOTROPIES
COSMIC MICROWAVE BACKGROUND ANISOTROPIES Anthony Challinor Institute of Astronomy & Department of Applied Mathematics and Theoretical Physics University of Cambridge, U.K. a.d.challinor@ast.cam.ac.uk 26
More informationCluster Thermodynamics: Entropy
Cluster Thermodynamics: Entropy Intracluster Entropy K = Pρ -5/3 Tn e -2/3 (kev cm 2 ) Entropy distribution in ICM determines a cluster s equilibrium structure Entropy distribution retains information
More informationBrief update (3 mins/2 slides) on astrophysics behind final project
Nov 1, 2017 Brief update (3 mins/2 slides) on astrophysics behind final project Evidence for Dark Matter Next Wed: Prelim #2, similar to last one (30 mins). Review especially lecture slides, PEs and non-project
More informationCurrent status of the ΛCDM structure formation model. Simon White Max Planck Institut für Astrophysik
Current status of the ΛCDM structure formation model Simon White Max Planck Institut für Astrophysik The idea that DM might be a neutral, weakly interacting particle took off around 1980, following a measurement
More informationEUCLID Spectroscopy. Andrea Cimatti. & the EUCLID-NIS Team. University of Bologna Department of Astronomy
EUCLID Spectroscopy Andrea Cimatti University of Bologna Department of Astronomy & the EUCLID-NIS Team Observing the Dark Universe with EUCLID, ESA ESTEC, 17 November 2009 DARK Universe (73% Dark Energy
More informationSEARCHING FOR LOCAL CUBIC- ORDER NON-GAUSSIANITY WITH GALAXY CLUSTERING
SEARCHING FOR LOCAL CUBIC- ORDER NON-GAUSSIANITY WITH GALAXY CLUSTERING Vincent Desjacques ITP Zurich with: Nico Hamaus (Zurich), Uros Seljak (Berkeley/Zurich) Horiba 2010 cosmology conference, Tokyo,
More informationDark Matter. Homework 3 due. ASTR 433 Projects 4/17: distribute abstracts 4/19: 20 minute talks. 4/24: Homework 4 due 4/26: Exam ASTR 333/433.
Dark Matter ASTR 333/433 Today Clusters of Galaxies Homework 3 due ASTR 433 Projects 4/17: distribute abstracts 4/19: 20 minute talks 4/24: Homework 4 due 4/26: Exam Galaxy Clusters 4 distinct measures:
More informationAnalyzing the CMB Brightness Fluctuations. Position of first peak measures curvature universe is flat
Analyzing the CMB Brightness Fluctuations (predicted) 1 st rarefaction Power = Average ( / ) 2 of clouds of given size scale 1 st compression 2 nd compression (deg) Fourier analyze WMAP image: Measures
More informationLarge-scale structure as a probe of dark energy. David Parkinson University of Sussex, UK
Large-scale structure as a probe of dark energy David Parkinson University of Sussex, UK Question Who was the greatest actor to portray James Bond in the 007 movies? a) Sean Connery b) George Lasenby c)
More informationGalaxies 626. Lecture 3: From the CMBR to the first star
Galaxies 626 Lecture 3: From the CMBR to the first star Galaxies 626 Firstly, some very brief cosmology for background and notation: Summary: Foundations of Cosmology 1. Universe is homogenous and isotropic
More informationNon Baryonic Nature of Dark Matter
Non Baryonic Nature of Dark Matter 4 arguments MACHOs Where are the dark baryons? Phys 250-13 Non Baryonic 1 Map of the territory dark matter and energy clumped H 2? gas baryonic dust VMO? MACHOs Primordial
More informationX-ray Cluster Cosmology
X-ray Cluster Cosmology A white paper submitted to the Decadal Survey Committee Authors: A. Vikhlinin 1, S. Murray 1, R. Gilli 2, P. Tozzi 3, M. Paolillo 4, N. Brandt 8, G. Tagliaferri 9, M. Bautz 12,
More informationGalaxy Clusters in Stage 4 and Beyond
Galaxy Clusters in Stage 4 and Beyond (perturbation on a Cosmic Visions West Coast presentation) Adam Mantz (KIPAC) CMB-S4/Future Cosmic Surveys September 21, 2016 Galaxy clusters: what? Galaxy cluster:
More informationWeighing the dark side of the universe
Weighing the dark side of the universe Department of Physics The University of Tokyo Yasushi Suto June 18, 2004 Particle Physics Group Seminar Tsukuba University Hierarchical structure in the universe
More informationDark Matter -- Astrophysical Evidences and Terrestrial Searches
SFB 443 Bosen workshop 2010 Dark Matter -- Astrophysical Evidences and Terrestrial Searches Klaus Eitel, Karlsruhe Institute of Technology, KCETA, IK KIT University of the State of Baden-Württemberg and
More informationClusters, lensing and CFHT reprocessing
Clusters, lensing and CFHT reprocessing R. Ansari - French LSST meeting December 2015 1 Clusters as cosmological probes Clusters: characteristics and properties Basics of lensing Weighting the Giants Clusters
More informationTwo Phase Formation of Massive Galaxies
Two Phase Formation of Massive Galaxies Focus: High Resolution Cosmological Zoom Simulation of Massive Galaxies ApJ.L.,658,710 (2007) ApJ.,697, 38 (2009) ApJ.L.,699,L178 (2009) ApJ.,725,2312 (2010) ApJ.,744,63(2012)
More informationConstraints on dark matter annihilation cross section with the Fornax cluster
DM Workshop@UT Austin May 7, 2012 Constraints on dark matter annihilation cross section with the Fornax cluster Shin ichiro Ando University of Amsterdam Ando & Nagai, arxiv:1201.0753 [astro-ph.he] Galaxy
More informationGalaxy clusters from cosmological hydrodynamical simulations: the intracluster medium
Galaxy clusters from cosmological hydrodynamical simulations: the intracluster medium Veronica Biffi (UniTs-OATs) biffi@oats.inaf.it S. Borgani, G. Murante, E. Rasia, S. Planelles, D. Fabjan, G.L. Granato,
More informationAdvanced Topics on Astrophysics: Lectures on dark matter
Advanced Topics on Astrophysics: Lectures on dark matter Jesús Zavala Franco e-mail: jzavalaf@uwaterloo.ca UW, Department of Physics and Astronomy, office: PHY 208C, ext. 38400 Perimeter Institute for
More informationThe effect of gas physics on the halo mass function
Mon. Not. R. Astron. Soc. 394, L11 L15 (2009) doi:10.1111/j.1745-3933.2008.00597.x The effect of gas physics on the halo mass function R. Stanek, 1 D. Rudd 2 and A. E. Evrard 1,3 1 Department of Astronomy,
More informationMulti-wavelength studies of substructures and inhomogeneities in galaxy clusters
Multi-wavelength studies of substructures and inhomogeneities in galaxy clusters SZE (RX J1347) ΔS X (A3667) Tetsu Kitayama Toho University, Japan Infrared (Coma) 1. How can we study ICM physics with the
More informationFeb-2015 Hervé Dole, IAS - M2NPAC Advanced Cosmology - Dole/Joyce/Langer 1. problem?
Hervé Dole introduction to the structured universe why is the night sky dark? 1. why galaxy formation is a problem? 2. how to adress these problems? 3. overview of observation facts 4. overview of structure
More informationGalaxy groups: X-ray scaling relations, cool cores and radio AGN
Galaxy groups: X-ray scaling relations, cool cores and radio AGN Ming Sun (UVA) (M. Voit, W. Forman, P. Nulsen, M. Donahue, C. Jones, A. Vikhlinin, C. Sarazin ) Outline: 1) Scaling relations and baryon
More informationhalo formation in peaks halo bias if halos are formed without regard to the underlying density, then δn h n h halo bias in simulations
Physics 463, Spring 07 Bias, the Halo Model & Halo Occupation Statistics Lecture 8 Halo Bias the matter distribution is highly clustered. halos form at the peaks of this distribution 3 2 1 0 halo formation
More information80 2 Observational Cosmology L and the mean energy
80 2 Observational Cosmology fluctuations, short-wavelength modes have amplitudes that are suppressed because these modes oscillated as acoustic waves during the radiation epoch whereas the amplitude of
More informationCalibrating the Planck Cluster Mass Scale with CLASH
Calibrating the Planck Cluster Mass Scale with CLASH Mariana Penna-Lima Centro Brasileiro de Pesquisas Físicas - CBPF in collaboration with J. Bartlett, E. Rozo, J.-B. Melin, J. Merten, A. Evrard, M. Postman,
More informationXiuyuan Yang (Columbia University and BNL) Jan Kratochvil (University of Miami)
Xiuyuan Yang (Columbia University and BNL) Jan Kratochvil (University of Miami) Advisors: Morgan May (Brookhaven National Lab) Zoltan Haiman (Columbia University) Introduction Large surveys such as LSST
More informationUri Keshet / CfA Impact of upcoming high-energy astrophysics experiments Workshop, KAVLI, October 2008
Uri Keshet / CfA Impact of upcoming high-energy astrophysics experiments Workshop, KAVLI, October 008 Impact of upcoming high-energy astrophysics experiments Workshop, KAVLI, October 008 Relaxed, cool
More informationHow many arcmin-separation lenses are expected in the 2dF QSO survey?
Mon. Not. R. Astron. Soc. 339, L23 L27 (2003) How many arcmin-separation lenses are expected in the 2dF QSO survey? Masamune Oguri Department of Physics, School of Science, University of Tokyo, Tokyo 113-0033,
More informationThe peculiar velocity and temperature profile of galaxy clusters
RAA 2014 Vol. 14 No. 6, 667 672 doi: 10.1088/1674 4527/14/6/005 http://www.raa-journal.org http://www.iop.org/journals/raa Research in Astronomy and Astrophysics The peculiar velocity and temperature profile
More informationNeutrino Mass & the Lyman-α Forest. Kevork Abazajian University of Maryland
Neutrino Mass & the Lyman-α Forest Kevork Abazajian University of Maryland INT Workshop: The Future of Neutrino Mass Measurements February 9, 2010 Dynamics: the cosmological density perturbation spectrum
More informationCosmology The Road Map
Cosmology The Road Map Peter Schneider Institut für Astrophysik, Bonn University on behalf of the Astronomy Working Group Cosmology s Themes Fundamental Cosmology Probing inflation Investigating Dark Energy
More informationClusters: Observations
Clusters: Observations Last time we talked about some of the context of clusters, and why observations of them have importance to cosmological issues. Some of the reasons why clusters are useful probes
More informationCosmic ray feedback in hydrodynamical simulations. simulations of galaxy and structure formation
Cosmic ray feedback in hydrodynamical simulations of galaxy and structure formation Canadian Institute for Theoretical Astrophysics, Toronto April, 13 26 / Workshop Dark halos, UBC Vancouver Outline 1
More informationFeedback and Galaxy Formation
Heating and Cooling in Galaxies and Clusters Garching August 2006 Feedback and Galaxy Formation Simon White Max Planck Institute for Astrophysics Cluster assembly in ΛCDM Gao et al 2004 'Concordance'
More information