What Can Neutron Stars Tell Us about QED and Vice Versa?
|
|
- Karin Anthony
- 5 years ago
- Views:
Transcription
1 What Can Neutron Stars Tell Us about QED and Vice Versa? 17 April 2018 Ilaria Caiazzo, Roberto Mignami, Roberto Taverna, Roberto Turolla, Silvia Zane, and others.
2 Outline Birefringence Magnetars X-ray Pulsars
3 Birefringence An Old Prediction
4 Birefringence An Old Prediction
5 Birefringence An Old Prediction
6 Birefringence Index of Refraction n = T 2 B 2 What could be a signature of this birefringence? A time delay: t 10 3 R/c 10ns? n n Magnetic Field [Gauss]
7 Birefringence Index of Refraction n = T 2 B 2 What could be a signature of this birefringence? A time delay: t 10 3 R/c 10ns? This seems a bit too subtle. n n Magnetic Field [Gauss]
8 Liquid Crystal Displays
9 Liquid Crystal Displays Wikipedia
10 Polarization-Limiting Radius The radius at which the polarization stops following the birefringence is called the polarization-limiting radius. Beyond here the modes are coupled.
11 Polarization-Limiting Radius The radius at which the polarization stops following the birefringence is called the polarization-limiting radius. Beyond here the modes are coupled. The polarization-limiting radius for a dipole field is r pl ) 2/5 ( α ν ) ( 1/5 µ sin β 45 c B QED ( ) µ 2/5 ( ) E 1/ G cm 3 (sin β) 2/5 cm, 4 kev
12 Why does this matter? r pl /R = 0 Heyl, Shaviv, Lloyd 03
13 Why does this matter? r pl /R = 0 Heyl, Shaviv, Lloyd 03 r pl /R = 1.9 (AM Her, AMSP)
14 Why does this matter? r pl /R = 0 Heyl, Shaviv, Lloyd 03
15 Why does this matter? r pl /R = 0 Heyl, Shaviv, Lloyd 03 r pl /R = 12 (XRP)
16 Why does this matter? r pl /R = 0 Heyl, Shaviv, Lloyd 03 Quasi-Tangential Region Wang, Lai 09 r pl /R = 12 (XRP)
17 Why does this matter? r pl /R = 0 Heyl, Shaviv, Lloyd 03
18 Why does this matter? r pl /R = 0 Heyl, Shaviv, Lloyd 03 r pl /R = 76 (Magnetar)
19 Places to Look Radius Magnetic Field µ 30 r pl at 4 kev Magnetar XRP ms XRP AM Her
20 Deep in the atmosphere of the neutron star the plasma dominates, while outside the vacuum dominates. For large strengths of the magnetic field, the vacuum resonance may lie between the photospheres B B l T 1/8 6 E 1/4 1 S 1/4 G where S = 1 e E/kT. This can have a strong effect on the appearance of spectral features and the high-energy slope. Ho, Lai 04
21 Magnetars X-ray Pulsars Magnetar Emission Caiazzo & Heyl 2016; 4U Taverna et al. 2016; SGR (350ks)
22 To Do #1 Outline Magnetars X-ray Pulsars Simulate with XIPE QED effects from thermal Realistic Hydrogen Atmosphere and Astrophysics of Strong Magnetic Field systems with ext component of Physics the atmosphere, and combine Heyl, Shaviv, Lloyd 03 for ure 15:Linear The expected fraction of linear polarization from the surface neutron polarization hydrogen atmospheres withoftstrongly =106.5magnetized K neutron starsstars andwith eff 6.5 rogenmagnetic atmospheresmoment and e ective temperatures of 10 K. (from Heyl et al. 2005). 30 degrees from the line of sight (astro-ph/050235)
23 Magnetars X-ray Pulsars RX J Mignami et al. 2016
24 Magnetars X-ray Pulsars Her X-1 Polarization Degree km 10 km 11 km 12 km 15 km Q/I [ Polarization Degree ] km 10 km 11 km 15 km extp 100ks Energy [kev] Energy [kev] Caiazzo & Heyl 2017
25 y Outline Magnetars X-ray Pulsars Her X-1 Polarization Degree x 9 km 10 km 11 km 12 km 15 km Q/I [ Polarization Degree ] km 10 km 11 km 15 km extp 100ks Energy [kev] Energy [kev] Caiazzo & Heyl 2017
26 Places to Look Radius Magnetic Field µ 30 r pl at 4 kev Magnetar XRP ms XRP
QED, Neutron Stars, X-ray Polarimetry
QED,, X-ray Polarimetry 20 July 2016 Ilaria Caiazzo; Yoram Lithwick, Don Lloyd, Dan Mazur, Nir Shaviv; Roberto Turolla, Roberto Taverna; Wynn Ho, Dong Lai, Rosalba Perna and others. QED,, X-ray Polarimetry
More informationPolarized (Surface) X-Rays from Highly Magnetized Neutron Stars
Polarized (Surface) X-Rays from Highly Magnetized Neutron Stars Dong Lai Cornell University The Coming Age of X-Ray Polarimetry, April 29, 2009, Rome, Italy Thermal (Surface) Radiation from Neutron Stars
More informationarxiv: v2 [astro-ph.he] 14 Feb 2018
arxiv:1710.08709v2 [astro-ph.he] 14 Feb 2018 Evidence of vacuum birefringence from the polarisation of the optical emission from an Isolated Neutron Star Roberto P. Mignani 1,2, Vincenzo Testa 3, Denis
More informationEXTREME NEUTRON STARS
EXTREME NEUTRON STARS Christopher Thompson Canadian Institute for Theoretical Astrophysics University of Toronto SLAC Summer Institute 2005 Extreme Magnetism: B ~ 10 8-9 G (Low-mass X-ray binaries, millisecond
More informationX-ray Spectra from Magnetar Candidates
X-ray Spectra from Magnetar Candidates A Twist in the Field R Turolla Department of Physics University of Padova, Italy With L Nobili, S Zane, N. Sartore GL Israel, N Rea SGRs and AXPs X-ray Spectra SGR
More informationNanda Rea. XMM-Newton reveals magnetars magnetospheric densities. University of Amsterdam Astronomical Institute Anton Pannekoek NWO Veni Fellow
XMM-Newton reveals magnetars magnetospheric densities Nanda Rea University of Amsterdam Astronomical Institute Anton Pannekoek NWO Veni Fellow In collaboration with : Silvia Zane Roberto Turolla Maxim
More informationThe Magnificent Seven Similarities and Differences
The Magnificent Seven Similarities and Differences Frank Haberl Max-Planck-Institut für extraterrestrische Physik (MPE), Garching The discovery of thermal, radio quiet isolated neutron stars New XMM-Newton
More informationSurface emission of neutron stars
Surface emission of neutron stars NS Radii A NS with homogeneous surface temperature and local blackbody emission L 4 R 2 T 4 From dispersion measure F 4 L D 2 2 R / D T 4 From X-ray spectroscopy NS Radii
More informationX-ray Isolated Neutron Stars: The Challenge of Simplicity
X-ray Isolated Neutron Stars: The Challenge of Simplicity The Magnificent Seven R Turolla Department of Physics University of Padova, Italy M Cropper, CP De Vries, JJ Drake, F Haberl, A Treves J Vink,
More informationXMM-Newton Observations of the Isolated Neutron Star 1RXS J / RBS 1774
XMM-Newton Observations of the Isolated Neutron Star 1RXS J214303.7+065419 / RBS 1774 Mark Cropper, Silvia Zane Roberto Turolla Luca Zampieri Matteo Chieregato Jeremy Drake Aldo Treves MSSL/UCL Univ Padova
More informationThermal Emission from Isolated Neutron Stars
Thermal Emission from Isolated Neutron Stars R. Turolla Dept. of Physics, University of Padova, Italy IWARA09 - Maresias, October 4-8 2009 1 Outline Are INSs thermal emitters? Observations of INSs Importance
More informationINTEGRAL & Magnetars: a high energy approach to extreme neutron stars
INTEGRAL & Magnetars: a high energy approach to extreme neutron stars Diego Götz CEA - Saclay - Irfu/Service d Astrophysique N. Rea (UvA), S. Zane (MSSL), R. Turolla (Uni Padova), M. Lyutikov (Purdue Univ.)
More informationPolarisation of high-energy emission in a pulsar striped wind
Polarisation of high-energy emission in a pulsar striped wind Jérôme Pétri Observatoire Astronomique de Strasbourg, Université de Strasbourg, France. X-ray polarimetry, November 2017, Strasbourg Jérôme
More informationAnomalous X-ray Pulsars
Anomalous X-ray Pulsars GRBs: The Brightest Explosions in the Universe Harvard University, May 23, 2002 Vicky Kaspi Montreal, Canada What are Anomalous X-ray Pulsars? exotic class of objects 1st discovered
More informationMagnetars, the most extreme Neutron Stars. Multiwavelenght emission
Magnetars, the most extreme Neutron Stars. Multiwavelenght emission Silvia Zane, MSSL, UCL Black Holes, jets and outflows Kathmandu, Nepal 14-18 Oct 2013 o SGRs/AXPs as magnetars, the most extreme compact
More informationNEW EVIDENCE OF PROTON-CYCLOTRON RESONANCE IN A MAGNETAR STRENGTH FIELD FROM SGR Alaa I. Ibrahim, 1,2 Jean H. Swank, 1 and William Parke 2
The Astrophysical Journal, 584:L17 L1, 003 February 10 003. The American Astronomical Society. All rights reserved. Printed in U.S.A. NEW EVIDENCE OF PROTON-CYCLOTRON RESONANCE IN A MAGNETAR STRENGTH FIELD
More informationInfrared-Optical observations of magnetars
Infrared-Optical observations of magnetars Mikio Morii Tokyo Institute of Technology 2012.09.01 @ Rikkyo Univ. Contents Search for Near-Infrared Pulsation of the AXP 4U 0142+61 M. M., N. Kobayashi, N.
More informationCyclotron Line Science with LAXPC. Dipankar Bhattacharya IUCAA, Pune
Cyclotron Line Science with LAXPC Dipankar Bhattacharya IUCAA, Pune Workshop on Science with LAXPC/Astrosat, Hyderabad, 16 December 2014 A High Mass X-ray Binary Cyclotron Resonant Scattering Features
More informationNEW EVIDENCE FOR PROTON CYCLOTRON RESONANCE IN A MAGNETAR STRENGTH FIELD FROM SGR
NEW EVIDENCE FOR PROTON CYCLOTRON RESONANCE IN A MAGNETAR STRENGTH FIELD FROM SGR 1806-20 ALAA I. IBRAHIM, 1,2 JEAN H. SWANK 1 &WILLIAM PARKE 2 1 NASA Goddard Space Flight Center, Laboratory for High Energy
More informationPulsars. Table of Contents. Introduction
Pulsars Table of Contents Introduction... 1 Discovery...2 Observation...2 Binary Pulsars...3 Pulsar Classes... 3 The Significance of Pulsars... 3 Sources...4 Introduction Pulsars are neutron stars which
More informationCrustal cooling in accretion heated neutron stars
Crustal cooling in accretion heated neutron stars Ed Cackett ecackett@umich.edu University of Michigan Collaborators: Rudy Wijnands, Jon Miller, Jeroen Homan, Walter Lewin, Manuel Linares Outline X-ray
More informationRotating RAdio Transients (RRATs) ApJ, 2006, 646, L139 Nature, 2006, 439, 817 Astro-ph/
Rotating RAdio Transients (RRATs) ApJ, 2006, 646, L139 Nature, 2006, 439, 817 Astro-ph/0608311 Introduction 11 Rotating RAdio Transients (RRATs) (Mclaughlin et al 2006) Repeated, irregular radio bursts
More informationMagnetized neutron star atmospheres: beyond the cold plasma approximation
Magnetized neutron star atmospheres: beyond the cold plasma approximation IAAT, University of Tübingen, Germany Kazan Federal University, Russia E-mail: suleimanov@astro.uni-tuebingen.de George Pavlov
More informationChapter 14. Outline. Neutron Stars and Black Holes. Note that the following lectures include. animations and PowerPoint effects such as
Note that the following lectures include animations and PowerPoint effects such as fly ins and transitions that require you to be in PowerPoint's Slide Show mode (presentation mode). Chapter 14 Neutron
More informationProbing Extreme Physics with Compact Objects
Probing Extreme Physics with Compact Objects Dong Lai Department of Astronomy Cornell University Extremes in Astrophysics: Most energetic particles: 10 20 ev Most energetic photons: 10 14 ev Highest temperature:
More information- Synchrotron emission: A brief history. - Examples. - Cyclotron radiation. - Synchrotron radiation. - Synchrotron power from a single electron
- Synchrotron emission: A brief history - Examples - Cyclotron radiation - Synchrotron radiation - Synchrotron power from a single electron - Relativistic beaming - Relativistic Doppler effect - Spectrum
More informationX-ray Properties of Rotation Powered Pulsars and Thermally Emitting Neutron Stars
X-ray Properties of Rotation Powered Pulsars and Thermally Emitting Neutron Stars George Pavlov (Penn State; Polytech.Univ SPb) Collaborators: Oleg Kargaltsev (George Washington Univ.) Bettina Posselt
More informationA resonant cyclotron scattering model for the X-ray spectra of Magnetar Candidates
A resonant cyclotron scattering model for the X-ray spectra of Magnetar Candidates The X-ray Universe 2008 Granada, 27-390 May 2008 Silvia Zane, MSSL, UCL With: Luciano Nobili, Roberto Turolla, Nanda Rea,
More informationEmission Model(s) of Magnetars
Emission Model(s) of Magnetars Silvia Zane, MSSL, UCL on behalf of a large team of co-authors Current Understanding and Future Studies of Magnetars: Research Strategy in the Astro-H era. A celebration
More informationarxiv:astro-ph/ v3 22 Sep 2006
Mon. Not. R. Astron. Soc. 000, 1 31 (2006) Printed 2 November 2018 (MN LATEX style file v2.2) Atmosphere Models of Magnetized Neutron Stars: QED Effects, Radiation Spectra and Polarization Signals M. van
More informationarxiv:astro-ph/ v2 30 Dec 2001
Evolution of Isolated Neutron Stars Sergei Popov Sternberg Astronomical Institute November 10, 2000 arxiv:astro-ph/0101031v2 30 Dec 2001 Abstract. In this paper we briefly review our recent results on
More informationSystematic study of magnetar outbursts
Systematic study of magnetar outbursts Francesco Coti Zelati Institute for Space Sciences, CSIC-IEEC, Barcelona In collaboration with N. Rea (CSIC-IEEC, U. Amsterdam), J. A. Pons (U. Alicante), S. Campana
More informationModelling magnetars high energy emission through Resonant Cyclotron Scattering
Modelling magnetars high energy emission through Resonant Cyclotron Scattering CEA Saclay - DSM/Irfu/Service d Astrophysique UMR AIM - Orme des Merisiers, Bat. 709, F-91191 Gif-sur-Yvette, France E-mail:
More informationThe Same Physics Underlying SGRs, AXPs and Radio Pulsars
Chin. J. Astron. Astrophys. Vol. 6 (2006), Suppl. 2, 273 278 (http://www.chjaa.org) Chinese Journal of Astronomy and Astrophysics The Same Physics Underlying SGRs, AXPs and Radio Pulsars Biping Gong National
More informationX-ray emission properties vary with spin-down age. Crab-like pulsars (< 10 4 yrs)
X-ray emission properties vary with spin-down age Crab-like pulsars (< 10 4 yrs) X-ray emission properties vary with spin-down age Crab-like pulsars (< 10 4 yrs) Cooling neutron stars ( ~10 5-10 6 yrs)
More informationThe decaying magneticfield of magnetars
November 25th 2013 SFB/TR7 Video Seminar The decaying magneticfield of magnetars SIMONE DALL'OSSO Theoretical Astrophysics - University of Tübingen Motivations - X-ray emission of magnetars powered by
More informationMeasuring the Neutron Star Mass-Radius Relationship with X-ray Spectroscopy
Measuring the Neutron Star Mass-Radius Relationship with X-ray Spectroscopy Bob Rutledge McGill University Collaborators: Lars Bildsten (ITP/UCSB) Ed Brown (MSU) George Pavlov (PSU) Slava Zavlin (MSFC)
More informationEmission from Isolated Neutron Stars. Observations and model applications
Thermal Emission from Isolated Neutron Stars Theoretical aspects Observations and model applications Slava Zavlin (MPE, Garching) A Short History Chi & Salpeter (1964) and Tsuruta (1964): thermal radiation
More informationModeling Atmospheres of Neutron Stars
Moeling Atmospheres of Neutron Stars Isolate NSs: solitary NSs or those in binaries without accretion Slava Zavlin (NASA/MSFC) The 363- Heraeus Seminar, Ba Honnef, May 5-9, 2006 Short history Chiu & Salpeter
More informationMeasuring MNS, RNS, MNS/RNS or R
Measuring MNS, RNS, MNS/RNS or R Sebastien Guillot Advisor: Robert Rutledge Galileo Galilei Institute, Firenze March 2014 Some Reviews Lattimer and Prakash, 2007 Miller C., 2013 Heinke et al., 2013 Reminder
More informationNew optical/uv counterparts and SEDs of Isolated NS ATISH KAMBLE, D. KAPLAN (UW-MILWAUKEE), M. VAN KERKWIJK (TORONTO) AND W.
New optical/uv counterparts and SEDs of Isolated NS ATISH KAMBLE, D. KAPLAN (UW-MILWAUKEE), M. VAN KERKWIJK (TORONTO) AND W. HO (SOUTHAMPTON) RX J1856...a puzzle! Featureless BB spectrum instead of harder
More informationSpectral Lines from Rotating Neutron Stars
Submitted to The Astrophysical Journal Letters Spectral Lines from Rotating Neutron Stars Feryal Özel1 and Dimitrios Psaltis Institute for Advanced Study, School of Natural Sciences, Einstein Dr., Princeton,
More informationEvolution with decaying and re-emerging magnetic field
Evolution with decaying and re-emerging magnetic field Diversity of young neutron stars Young isolated neutron stars can appear in many flavors: o Radio pulsars o Compact central X-ray sources in supernova
More informationarxiv: v1 [astro-ph.he] 17 Nov 2011
arxiv:1111.4158v1 [astro-ph.he] 17 Nov 2011 The influence of magnetic field geometry on magnetars X-ray spectra D Viganò 1, N Parkins 2,3, S Zane 3, R Turolla 4,3, J A Pons 1 and J A Miralles 1 1 Departament
More informationProbing the Interstellar Medium on Solar System Size Scales. Alex S. Hill 2004 April 27
Probing the Interstellar Medium on Solar System Size Scales Alex S. Hill 2004 April 27 Outline The interstellar medium (ISM) Pulsar scintillation Secondary spectrum Imaging the ISM 2004 January Observations
More informationNeutron Stars. We now know that SN 1054 was a Type II supernova that ended the life of a massive star and left behind a neutron star.
Neutron Stars Neutron Stars The emission from the supernova that produced the crab nebula was observed in 1054 AD by Chinese, Japanese, Native Americans, and Persian/Arab astronomers as being bright enough
More informationNeutron Stars: Observations
Neutron Stars: Observations Ian Jones School of Mathematics, University of Southampton, UK Neutron star observations: overview From the observational point of view, neutron stars come in many different
More informationXMM observations of three middle-aged pulsars
Mem. S.A.It. Vol. 75, 458 c SAIt 2004 Memorie della MM observations of three middle-aged pulsars V. E. Zavlin 1 and G. G. Pavlov 2 1 Max-Planck Institut für extraterrestrische Physik, 85748 Garching, Germany
More informationLecture 4: Absorption and emission lines
Lecture 4: Absorption and emission lines Senior Astrophysics 2018-03-13 Senior Astrophysics () Lecture 4: Absorption and emission lines 2018-03-13 1 / 35 Outline 1 Absorption and emission line spectra
More informationarxiv: v1 [astro-ph.sr] 18 Jul 2013
Compact Stars in the QCD Phase Diagram III (CSQCD III) December 12-15, 2012, Guarujá, SP, Brazil http://www.astro.iag.usp.br/~foton/csqcd3 Describing SGRs/AXPs as fast and magnetized white dwarfs arxiv:1307.5074v1
More informationProgress in Pulsar detection
Progress in Pulsar detection With EINSTEIN & EXOSAT: 7 radio pulsars detected in X-rays With ROSAT, ASCA & BSAX: 33 radio pulsars detected in X-rays After ~8 yrs with XMM & Chandra: 81 radio pulsars detected
More informationPowering Anomalous X-ray Pulsars by Neutron Star Cooling
Powering Anomalous X-ray Pulsars by Neutron Star Cooling Jeremy S. Heyl Lars Hernquist 1 Lick Observatory, University of California, Santa Cruz, California 95064, USA ABSTRACT Using recently calculated
More informationIsolated And Accreting Magnetars Viewed In Hard X-rays
The XXVII Texas Symposium on Relativistic Astrophysics Isolated And Accreting Magnetars Viewed In Hard X-rays Wei Wang National Astronomical Observatories, Beijing China Dec 8 13 2013, Dallas TX, USA Contents
More informationX- ray Polarimetry Satellite GEMS and beyond
ithes Mini-workshop on "Strong-Field Physics X- ray Polarimetry Satellite GEMS and beyond RIKEN Nishina Center Toru Tamagawa Strong- field Physics(May. 29, 2014) 2 Introduc8on X-ray polarimetry is the
More informationStudies on Axions as the Energy source in Magnetar
Studies on Axions as the Energy source in Magnetar Pranita Das 1,2, H.L.Duorah 2 and Kalpana Duorah 2 Department of Physics, Pandu College,Guwahati,Assam-781012 1 Department of Physics, Gauhati University,Guwahati,
More information- Potentials. - Liénard-Wiechart Potentials. - Larmor s Formula. - Dipole Approximation. - Beginning of Cyclotron & Synchrotron
- Potentials - Liénard-Wiechart Potentials - Larmor s Formula - Dipole Approximation - Beginning of Cyclotron & Synchrotron Maxwell s equations in a vacuum become A basic feature of these eqns is the existence
More informationX-ray polarimetry and new prospects in high-energy astrophysics
X-ray polarimetry and new prospects in high-energy astrophysics Carmelo Sgrò INFN Pisa carmelo.sgro@pi.infn.it Frascati, March 31, 2016 A new exploration window: X-Ray polarimetry Spectroscopy, imaging
More informationWide-Band Spectral Studies of Magnetar Burst and Persistent Emissions
Wide-Band Spectral Studies of Magnetar Burst and Persistent Emissions Yujin E. Nakagawa Waseda University, Japan yujin@aoni.waseda.jp Collaborators Kazuo Makishima 1, Teruaki Enoto 2, Takanori Sakamoto
More informationX-ray Observations of Rotation Powered Pulsars
X-ray Observations of Rotation Powered Pulsars George Pavlov (Penn State) Oleg Kargaltsev (George Washington Univ.) Martin Durant (Univ. of Toronto) Bettina Posselt (Penn State) Isolated neutron stars
More informationHard X-ray Emission by Resonant Compton Upscattering in Magnetars
Hard X-ray Emission by Resonant Compton Upscattering in Magnetars!! Zorawar Wadiasingh & Matthew G. Baring Rice University Peter L. Gonthier Hope College Texas Symposium 2013! December 9, 2013! Magnetars:
More informationFermi energy of electrons in neutron stars with strong magnetic field and magnetars
EPJ Web of Conferences 109, 07003 (2016) DOI: 10.1051/ epjconf/ 201610907003 C Owned by the authors, published by EDP Sciences, 2016 Fermi energy of electrons in neutron stars with strong magnetic field
More informationProbing the physics of magnetars
Probing the physics of magnetars GianLuca Israel (INAF - RomA ASTRONOMICAL OBSERVATORY)...and many many many others Why Magnetars? Loss of rotational energy is orders of magnitudes too small (1030erg/s)
More informationA direct confrontation between neutron star X-ray spectra and nuclear physics models
A direct confrontation between neutron star X-ray spectra and nuclear physics models Sebastien Guillot Post-doc CNES collaboration with N. Baillot d Etivaux J. Margueron N. Webb Neutron stars are amazing
More informationarxiv:astro-ph/ v2 21 May 2001
Draft version February 1, 2008 Preprint typeset using LATEX style emulateapj v. 04/03/99 PROTON CYCLOTRON FEATURES IN THERMAL SPECTRA OF ULTRA-MAGNETIZED NEUTRON STARS S. Zane 1, R. Turolla 2, L. Stella
More informationarxiv: v1 [astro-ph.sr] 18 Oct 2012
Some evolutionary aspects of the binary stellar systems containing neutron star. arxiv:1210.5075v1 [astro-ph.sr] 18 Oct 2012 O.M.Ulyanov 1, S.M.Andrievsky 2, V.F.Gopka 2, A.V. Shavrina 3 1 Institute of
More informationarxiv:astro-ph/ v2 23 Feb 2007
Mon. Not. R. Astron. Soc. 000, 1 16 (2006) Printed 28 August 2018 (MN LATEX style file v2.2) Modelling mid-z element atmospheres for strongly-magnetized neutron stars Kaya Mori 1,2, Wynn C.G. Ho 3,4 1
More informationNeutron stars. Macroscopic objects with quantum properties. Observatoire astronomique de Strasbourg Université de Strasbourg
Neutron stars Macroscopic objects with quantum properties Jérôme Pétri Observatoire astronomique de Strasbourg Université de Strasbourg Oxford, 3rd-5th July 2017 Jérôme Pétri (Université de Strasbourg)
More informationLecture 13 Interstellar Magnetic Fields
Lecture 13 Interstellar Magnetic Fields 1. Introduction. Synchrotron radiation 3. Faraday rotation 4. Zeeman effect 5. Polarization of starlight 6. Summary of results References Zweibel & Heiles, Nature
More informationSUPERFLUID MAGNETARS AND QPO SPECTRUM
SUPERFLUID MAGNETARS AND QPO SPECTRUM Andrea Passamonti Osservatorio Astronomico di Roma INAF. In collaboration with L. Stella, S. Lander SAIt Bologna 9/5/23 Magnetars Neutron stars with a strong magnetic
More information7. BINARY STARS (ZG: 12; CO: 7, 17)
7. BINARY STARS (ZG: 12; CO: 7, 17) most stars are members of binary systems or multiple systems (triples, quadruples, quintuplets,...) orbital period distribution: P orb = 11 min to 10 6 yr the majority
More informationMAGNETARS AS COOLING NEUTRON STARS
MAGNETARS AS COOLING NEUTRON STARS D.G. Yakovlev Ioffe Physical Technical Institute, Saint-Petersburg, Russia Main coauthors: A.D. Kaminker, A.Y. Potekhin, D.A. Baiko February 2009, Aspen HISTORY The first
More informationThe Giant Flare of 2004 Dec 27 from SGR and Fundamental Physics from Magnetars
The Giant Flare of 2004 Dec 27 from SGR1806-20 and Fundamental Physics from Magnetars L. Stella, S. Dall Osso, G.L Israel INAF Osservatorio Astronomico di Roma - Italy M. Vietri SNS Pisa - Italy And also
More informationPulsars & Double Pulsars:! A Multiwavelength Approach!
Pulsars & Double Pulsars:! A Multiwavelength Approach! Marta Burgay INAF, Cagliari Observatory! X-Ray Astronomy 2009 Bologna 08/09/2009! Spin-Powered Pulsars! Radio! High Energy! RRATs! Magnetars! XDINS!
More informationThe Neutron Star Zoo. Stephen C.-Y. Ng ( 吳志勇 ) HKU
The Neutron Star Zoo Stephen C.-Y. Ng ( 吳志勇 ) HKU Overview Introduction to neutron stars Different classes of neutron stars: Radio Pulsars MSPs Magnetars DINS CCOs Unification 6/12/2017 NAOC Stephen Ng
More informationStars AS4023: Stellar Atmospheres (13) Stellar Structure & Interiors (11)
Stars AS4023: Stellar Atmospheres (13) Stellar Structure & Interiors (11) Kenneth Wood, Room 316 kw25@st-andrews.ac.uk http://www-star.st-and.ac.uk/~kw25 What is a Stellar Atmosphere? Transition from dense
More informationNeutron star mass and radius constraints from X-ray bursts, accreting millisecond pulsars and X-ray polarization. Juri Poutanen
Neutron star mass and radius constraints from X-ray bursts, accreting millisecond pulsars and X-ray polarization Juri Poutanen University of Turku, Finland Nordita, Stockholm, Sweden Collaborators: Joonas
More informationNon-thermal emission from pulsars experimental status and prospects
Non-thermal emission from pulsars experimental status and prospects # γ!"# $%&'() TeV γ-ray astrophysics with VERITAS ( $γ" *$%&'() The charged cosmic radiation - how it all began... Discovery: Victor
More informationNeutron star mass and radius constraints from millisecond X-ray pulsars and X-ray bursters
Neutron star mass and radius constraints from millisecond X-ray pulsars and X-ray bursters Juri Poutanen (University of Turku, Finland) Collaborators:! Valery Suleimanov (Univ. Tübingen, Germany), Joonas
More informationInstability and different burning regimes
1 X-ray bursts Last time we talked about one of the major differences between NS and BH: NS have strong magnetic fields. That means that hot spots can be produced near the magnetic poles, leading to pulsations
More informationAstronomy 104: Second Exam
Astronomy 104: Second Exam Stephen Lepp October 29, 2014 Each question is worth 2 points. Write your name on this exam and on the scantron. Short Answer A The Sun is powered by converting hydrogen to what?
More informationThe Secret Life of Neutron Stars. Jeremy Heyl Harvard-Smithsonian CfA
The Secret Life of Neutron Stars Jeremy Heyl Harvard-Smithsonian CfA The Life of a 10 M Star PNS 10 5 yr 10 6 yr 10 7 yr 10 8 yr 10 9 yr 10 10 yr PMS MS Radio Pulsars Thermal Accretion-, Nuclear-, GWpowered
More informationDistribution of X-ray binary stars in the Galaxy (RXTE) High-Energy Astrophysics Lecture 8: Accretion and jets in binary stars
High-Energy Astrophysics Lecture 8: Accretion and jets in binary stars Distribution of X-ray binary stars in the Galaxy (RXTE) Robert Laing Primary Compact accreting binary systems Compact star WD NS BH
More informationIf the whole universe has no meaning, we. should never have found out that it has no. meaning: just as, if there were no light in
If the whole universe has no meaning, we should never have found out that it has no meaning: just as, if there were no light in the universe and therefore no creatures with eyes, we should never know it
More informationThe Radius of Neutron Stars. Bob Rutledge, Sebastien Guillot (McGill) Matthieu Servillat (CNRS), Natalie Webb (Toulouse)
The Radius of Neutron Stars Bob Rutledge, Sebastien Guillot (McGill) Matthieu Servillat (CNRS), Natalie Webb (Toulouse) Quiescent Low Mass e X-ray Binaries (qlmxb) Companion Star Composition: 75% H 23%
More informationThe maximum mass of neutron star. Ritam Mallick, Institute of Physics
The maximum mass of neutron star Ritam Mallick, Institute of Physics Introduction The study of phase transition of matter at extreme condition (temperature/density) is important to understand the nature
More informationProspects in space-based Gamma-Ray Astronomy
Prospects in space-based Gamma-Ray Astronomy On behalf of the European Gamma-Ray community Jürgen Knödlseder Centre d Etude Spatiale des Rayonnements, Toulouse, France Gamma-Ray Astronomy in Europe Europe
More informationPhoton splitting in a strongly magnetized plasma
Photon splitting in a strongly magnetized plasma M. V. Chistyakov, D. A. Rumyantsev Division of Theoretical Physics, Yaroslavl State (P.G. Demidov) University, Sovietskaya 4, 50000 Yaroslavl, Russian Federation
More informationGamma-ray Bursts: Supermassive or Hypermassive Neutron Star formation in Binary Mergers and Asymmetric Supernovae Core Collapses?
Gamma-ray Bursts: Supermassive or Hypermassive Neutron Star formation in Binary Mergers and Asymmetric Supernovae Core Collapses? (Conclusion: Rotation and Magnetic Fields are Important!) References Paul
More informationUnderstanding Magnetars with Conventional Physics. David Eichler
Understanding Magnetars with Conventional Physics David Eichler My collaborators Yuri Lyubarsky Chris Thompson Peter Woods Michael Gedalin Andrew Cheng (back in 1986-88) How can we tell what magnetars
More informationTwo types of glitches in a solid quark star model
Two types of glitches in a solid quark star Enping Zhou Supervisor: Prof. Renxin Xu & Prof. Luciano Rezzolla 2015.01.13 1 Outline Motivation The The result D & C Challenges to the theories on pulsar glitches
More informationThermal Radiation from Isolated Neutron Stars
Thermal Radiation from Isolated Neutron Stars George Pavlov Penn State Slava Zavlin MSFC (Huntsville) Divas Sanwal Penn State Oleg Kargaltsev Penn State Roger Romani Stanford Thermal emission: Why important?
More informationHydrogen Lines. What can we learn from light? Spectral Classification. Visible Hydrogen Spectrum Lines: Series. Actual Spectrum from SDSS
What can we learn from light? Hydrogen Lines Temperature Energy Chemical Composition Speed towards or away from us All from the! Lower E, Lower f, λ Visible! Higher E, Higher f, λ Visible Hydrogen Spectrum
More informationGalactic Neighborhood and (Chandra-enabled) X-ray Astrophysics
Galactic Neighborhood and (Chandra-enabled) X-ray Astrophysics Q. Daniel Wang (University of Massachusetts) Frontier Science Galactic Neighborhood Panel Members: Leo Blitz, Julianne Dalcanton, Bruce Draine,
More informationarxiv:astro-ph/ v3 27 Jul 2000
Draft version February 1, 2008 Preprint typeset using L A TEX style emulateapj v. 04/03/99 PRECURSORS OF GAMMA-RAY BURSTS: A CLUE TO THE BURSTER S NATURE Maxim Lyutikov Canadian Institute for Theoretical
More informationA Method for Judging Decay or Growth of the Magnetic Field of Pulsar
J. Astrophys. Astr. (2009) 30, 145 151 A Method for Judging Decay or Growth of the Magnetic Field of ulsar Lin-Sen Li Department of hysics, Northeast Normal University, Changchun 130 024, China. Received
More informationChapter 5 Light and Matter: Reading Messages from the Cosmos. How do we experience light? Colors of Light. How do light and matter interact?
Chapter 5 Light and Matter: Reading Messages from the Cosmos How do we experience light? The warmth of sunlight tells us that light is a form of energy We can measure the amount of energy emitted by a
More informationA Detailed Study of. the Pulsar Wind Nebula 3C 58
A Detailed Study of Collaborators: D. J. Helfand S. S. Murray S. Ransom F. D. Seward B. M. Gaensler E. V. Gotthelf E. van der Swaluw the Pulsar Wind Nebula 3C 58 Pulsar Wind Nebulae Young NS powers a particle/magnetic
More informationPrinted Name: Signature: PHYSICS DEPARTMENT. Ph.D. Qualifying Examination, PART III. Modern and Applied Physics
Exam #: Printed Name: Signature: PHYSICS DEPARTMENT UNIVERSITY OF OREGON Ph.D. Qualifying Examination, PART III Modern and Applied Physics Friday, September 22, 2000, 1:00 p.m. to 5:00 p.m. The examination
More informationUnstable Mass Transfer
Unstable Mass Transfer When the mass ratios are large, or when the donor star has a deep convective layer (so R M-1/3), mass loss will occur on a dynamical timescale. The result will be common envelope
More informationA NEW GENERATION OF GAMMA-RAY TELESCOPE
A NEW GENERATION OF GAMMA-RAY TELESCOPE Aleksandar GOSTOJIĆ CSNSM, Orsay, France 11 th Russbach School on Nuclear Astrophysics, March 2014. Introduction: Gamma-ray instruments GROUND BASED: ENERGY HIGHER
More information