Physics of Gamma-Ray Bursts Prompt Emission
نویسندگان
چکیده
منابع مشابه
Prompt Neutrino Emission from Gamma-Ray Bursts
Recent observations show that some or possibly all long-duration gamma-ray bursts (GRBs) arise from the core collapse of massive stars. In this case, the GRB environments are believed to be preburst stellar winds. We here study prompt neutrino emission from reverse shocks as a result of the interaction of relativistic fireballs with their surrounding wind matter. We find that for reasonable par...
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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...
متن کاملPrompt Optical Emission from Gamma-ray Bursts
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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Gamma-ray bursts (GRBs) are extremely bright (1050−1053 erg/s) and short (10−2− 10 s) emission events observed from distant parts of the Universe. Their redshifts are now measured in about 20 cases and typical z ∼ 1 (up to 4.5) are found [1]. The burst were observed to occur with a rate of ≈ 1 per day by the BATSE experiment [2] and even a higher rate would probably be detected with more sensit...
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ژورنال
عنوان ژورنال: Advances in Astronomy
سال: 2015
ISSN: 1687-7969,1687-7977
DOI: 10.1155/2015/907321