ACCELERATION OF ULTRA-HIGH-ENERGY COSMIC RAYS IN THE COLLIDING SHELLS OF BLAZARS AND GAMMA-RAY BURSTS: CONSTRAINTS FROM THEFERMI GAMMA-RAY SPACE TELESCOPE [PDF]
, 2010 Fermi Gamma-ray Space Telescope measurements of spectra, variability timescales, and maximum photon energies give lower limits to the apparent jet powers and, through γγ opacity arguments, the bulk Lorentz factors of relativistic jets. The maximum cosmic-
C. D. Dermer, S. Razzaque
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Stringent constraints on the dark matter annihilation cross section from subhalo searches with the Fermi Gamma-Ray Space Telescope [PDF]
, 2014 The dark matter halo of the Milky Way is predicted to contain a very large number of smaller subhalos. As a result of the dark matter annihilations taking place within such objects, the most nearby and massive subhalos could appear as point-like or ...
Asher Berlin, Dan Hooper
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A 34.5 day quasi-periodic oscillation in γ-ray emission from the blazar PKS 2247–131 [PDF]
Nature Communications, 2018 PKS 2247–131 is an active galaxy that has been emitting gamma-ray flares since October 2016. Here, the authors used data obtained with the Fermi Gamma-ray Space Telescope to find that PKS 2247–131 presents a relatively short, month-like flux oscillation ...
Jianeng Zhou +7 more
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Observations of the Large Magellanic Cloud with Fermi [PDF]
arXiv, 2009 We report on observations of the Large Magellanic Cloud with the Fermi Gamma-Ray Space Telescope. The LMC is clearly detected with the Large Area Telescope (LAT) and for the first time the emission is spatially well resolved in gamma-rays. Our observations reveal the massive star forming region 30 Doradus as a bright source of gamma-ray emission in the
Jean, Pierre, Knödlseder, Jürgen
arxiv +3 more sources
Dark matter line search using a joint analysis of dwarf galaxies with the Fermi Gamma-ray Space Telescope [PDF]
, 2012 We perform a joint analysis of dwarf galaxy data from the Fermi Gamma-ray Space Telescope in search of dark matter annihilation into a gamma-ray line. We employ a novel statistical method that takes into account the spatial and spectral information of ...
Alex Geringer-Sameth +1 more
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Model of gamma sky for the Fermi Gamma-ray Space Telescope (FGST) [PDF]
, 2010 A number of important parameters of cosmic-ray distribution, propagation, and interaction in the Milky Way can be predicted through the comparison of measured cosmic-ray and gamma-ray spectra to the spectra of simulated Galaxies. These predictions are made by altering the physical parameters governing Galaxy simulations until a best-fit set of ...
McLeod, Andrew +3 more
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Gamma Ray Bursts and the Fermi Gamma Ray Space Telescope: Notes to the La Plata Lectures
, 2008 33 pages; notes to a series of 5 one-hour lectures given at the First La Plata School in Astrophysics and Geophysics, La Plata, Argentina, March 10 - 14 ...
C. D. Dermer, Chris L. Fryer
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GAMMA-RAY BURST PREDICTIONS FOR THEFERMI GAMMA RAY SPACE TELESCOPE [PDF]
The Astrophysical Journal, 2009 9 pages, 6 figures, Accepted for publication in ApJ; this version contains an additional section that discusses the fluence estimates and uncertainties for EGRET ...
Truong Le, C. D. Dermer
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Identification of Gamma-Ray Point Sources in Fermi-LAT Data with Minimum Spanning Tree Algorithm [PDF]
Iranian Journal of Astronomy and Astrophysics, 2023 Gamma rays are the most energetic photons in the electromagnetic spectrum, detected with ground-based and space-based detectors in different energy ranges from sources in our galaxy and beyond.
Mehran Soor +2 more
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FERMI GAMMA-RAY SPACE TELESCOPE OBSERVATIONS OF THE GAMMA-RAY OUTBURST FROM 3C454.3 IN NOVEMBER 2010 [PDF]
The Astrophysical Journal, 2011 The flat-spectrum radio quasar 3C 454.3 underwent an extraordinary 5-day gamma-ray outburst in November 2010 where the daily flux measured with the Fermi Large Area Telescope (LAT) at photon energies E>100 MeV reached (66+/-2) x 10^-6 ph cm^-2 s^-1.
A. A. Abdo +99 more
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