Computer Science – Sound
Scientific paper
May 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc.1000..389d&link_type=abstract
GAMMA-RAY BURSTS 2007: Proceedings of the Santa Fe Conference. AIP Conference Proceedings, Volume 1000, pp. 389-392 (2008).
Computer Science
Sound
Gamma-Ray Sources, Gamma-Ray Bursts, Hydrodynamics, Macrosonic Propagation, Finite Amplitude Sound, Shock Waves
Scientific paper
We compute the prompt high-energy gamma-ray emission from GRBs in the framework of the internal shock model [1]. The dynamics of the internal shock phase is followed using a simple model where the relativistic outflow is discretized in a large number of shells that interact by direct collisions. The emission in the comoving frame of each shocked shell is computed using a code that solves the time evolution of the photon and electron populations and includes all relevant radiative processes (synchrotron, synchrotron self-absorption, inverse Compton, photon-photon annihilation and pair production). The contributions of all shells are then added to construct the observed GRB. Lightcurves are computed in different spectral bands (low and high-energy gamma-rays) and the observed photon spectrum at different times is also produced. We present our first results and discuss them in the prospect of future GLAST observations.
Bosnjak Z.
Daigne Frederic
Dubus Guillaume
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