Gamma Ray Physics in the Fermi era F.Longo University of Trieste and INFN Vulcano, May 22, 2018 F.Longo et al. -- 1
Gamma-ray astrophysics above 100 MeV AGILE Fermi 2 Picture of the day, Feb. 28, 2011, NASA-HEASARC
Gamma Ray detectors F.Longo et al. -- 3
Science topics in HE γ-ray Astrophysics High Energy Cosmic Rays Sources Particle Acceleration mechanisms Highest power gamma-ray sources The propagation of Cosmic Rays The diffuse emission The nature of Dark Matter Multimessenger connections The EM counterparts of GWs F.Longo et al. -- 4
EGRET Gamma-ray Sources F.Longo et al. -- 5
Solar Flares F.Longo et al. -- 6
Solar Flares F.Longo et al. -- 7
Supernova Remnants F.Longo et al. -- 8
Pulsar Wind Nebulae F.Longo et al. -- 9
Pulsars F.Longo et al. -- 10
Pulsars F.Longo et al. -- 11
Active Galactic Nuclei F.Longo et al. -- 12
Active Galactic Nuclei F.Longo et al. -- 13
Gamma-ray Bursts F.Longo et al. -- 14
Gamma Ray Bursts Prompt Emission (GRB 930131) Delayed Emission (GRB 940217) F.Longo et al. -- 15
Dark Matter F.Longo et al. -- 16
Dark Matter (?) F.Longo et al. -- 17
EGRET EGRET - 1991-2000 - 30 MeV - 30 GeV - AGN, GRB, Unidentified Sources, Diffuse Bkg 18 F.Longo et al. -- 18
Fermi LAT F.Longo et al. -- 19
The Fermi Observatory LAT GBM NaI Detector GBM BGO Detector F.Longo et al. -- 20
Overview of LAT γ Precision Si-strip Tracker (TKR) 18 XY tracking planes. Single-sided silicon strip detectors (228 µm pitch) Measure the photon direction; gamma ID. Tracker Hodoscopic CsI Calorimeter(CAL) Array of 1536 CsI(Tl) crystals in 8 layers. Measure the photon energy; image the shower. Segmented Anticoincidence Detector (ACD) 89 plastic scintillator tiles. Reject background of charged cosmic rays; segmentation removes self-veto effects at high energy. Electronics System Includes flexible, robust hardware trigger and software filters. ACD [surrounds 4x4 array of TKR towers] e + e Calorimeter Systems work together to identify and measure the flux of cosmic gamma rays with energy 20 MeV - >300 GeV. F.Longo et al. -- 21
Fermi Launch Launch from Cape Canaveral Air Station 11 June 2008 at 12:05PM EDT Circular orbit, 565 km altitude (96 min period), 25.6 deg inclination. F.Longo et al. -- 22
10 th Fermi Anniversary https://fermi.gsfc.nasa.gov/fermi10/ F.Longo et al. -- 23
10 th Fermi Anniversary https://www.asi.it/it/eventi/workshop/decennale-missione-fermi F.Longo et al. -- 24
10 th Fermi Anniversary F.Longo et al. -- 25
Fermi Highlights and Discoveries GRBs e + e - spectrum Blazars) Radio Galaxies) Starburst Galaxies (4) Globular Clusters (11) Fermi Bubbles LMC & SMC Novae SNRs & PWN (68) γ-ray binaries (6) Pulsars: isolated, binaries, & MSPs (122) Sun: flares & CR interactions TGFs Unidentified Sources)
The full sky map F.Longo et al. -- 27
1 FGL catalog Abdo, A. A. et al. 2010 F.Longo et al. -- 28
2 FGL catalog Nolan, P. L. et al. 2012 F.Longo et al. -- 29
3 FGL catalog Acero, F. et al. 2015 F.Longo et al. -- 30
Other catalogs F.Longo et al. -- 31
The Galactic Model Acero et al. 2016 F.Longo et al. -- 32
The Galactic Background Abdo, A. A. et al. 2009 F.Longo et al. -- 33
Publications http://adsabs.harvard.edu F.Longo et al. -- 34
Data Analysis Software https://fermi.gsfc.nasa.gov/ssc/data/analysis/ F.Longo et al. -- 35
Publications https://www-glast.stanford.edu F.Longo et al. -- 36
Solar Flares Ackermann, M. et al. 2017 F.Longo et al. -- 37
Supernova Remnants Ackermann et al. 2013 F.Longo et al. -- 38
Pulsars Clark, C. J. et al. 2018 F.Longo et al. -- 39
Pulsars Ackermann, M. et al. 2015 F.Longo et al. -- 40
Pulsar Wind Nebulae Buehler, R. et al. 2012 F.Longo et al. -- 41
Gamma Ray Novae Abdo, A. A. et al. 2010 F.Longo et al. -- 42
Gamma Ray Novae Ackermann, M. et al. 2014 F.Longo et al. -- 43
The Fermi Bubbles Ackermann, M. et al. 2014b F.Longo et al. -- 44
Active Galactic Nuclei Cheung, C.C. et al. 2014 F.Longo et al. -- 45
Active Galactic Nuclei Ackermann, M. et al. 2015 F.Longo et al. -- 46
Active Galactic Nuclei Ackermann, M. et al. 2017 F.Longo et al. -- 47
Extragalactic Background Light Ackermann, M. et al. 2012 F.Longo et al. -- 48
Searches for Dark Matter Ackermann, M. et al. 2017 F.Longo et al. -- 49
Searches(for(Dark(Ma.er( Albert, A. et al. 2017 F.Longo et al. -- 50
Gamma Ray Bursts Ackermann, M. et al. 2014a F.Longo et al. -- 51
Search for EM counterparts of GW Ajello, M. et al. 2017 F.Longo et al. -- 52
Multimessenger Astrophysics Kadler, M. et al. 2016 F.Longo et al. -- 53
Multimessenger Astrophysics F.Longo et al. -- 54
GBM/LAT Onboard Triggers 5 5
Fast response https://www-glast.stanford.edu/cgi-bin/pub_rapid F.Longo et al. -- 56
Conclusions (I) Fermi is an astroparticle mission exploring the high energy to very high energy gammaray sky. Results from its first 10 years of operations raised significant interest in a broad community of scientists that includes astrophysicists, particle physicists and quantum field theorists. F.Longo et al. -- 57
Conclusions (II) F.Longo et al. -- 58