Prompt thermal emission in gamma-ray bursts
نویسندگان
چکیده
منابع مشابه
“late Prompt” Emission in Gamma Ray Bursts?
The flat decay phase in the first 10–10 seconds of the X–ray light curve of Gamma Ray Bursts (GRBs) has not yet found a convincing explanation. The fact that the optical and X–ray lightcurves are often different, with breaks at different times, makes contrived any explanation based on the same origin for both the X–ray and optical fluxes. We here assume that the central engine can be active for...
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University of Michigan, Ann Arbor, MI 48109, USA Los Alamos National Laboratory, Los Alamos, NM 87545, USA NASA/Goddard Space Flight Center, Greenbelt, MD 20771, USA Universities Space Research Association, Seabrook, MD 20706, USA Raytheon Systems, Lanham, MD 20706, USA Università degli Studi di Ferrara, Ferrara, Italy Space Research Organization, Utrecht, The Netherlands Space Sciences Laborat...
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The prompt optical emission that arrives with the gamma-rays from a cosmic gamma-ray burst (GRB) is a signature of the engine powering the burst, the properties of the ultra-relativistic ejecta of the explosion, and the ejecta's interactions with the surroundings. Until now, only GRB 990123 had been detected at optical wavelengths during the burst phase. Its prompt optical emission was variable...
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A polarized gamma ray emission spread over a sufficiently wide energy band from a strongly magnetized astrophysical object like gamma ray bursts (GRBs) offers an opportunity to test the hypothesis of invisible axion. The axionic induced dichroism of gamma rays at different energies should cause a misalignment of the polarization plane for higher energy events relative to that one for lower ener...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2013
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361/201220023