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Simulation of Prompt Emission from GRBs with a Photospheric Component and its Detectability by GLAST
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0002-9769-8016
2007 (English)In: Gamma-Ray Bursts: Prospects for GLAST / [ed] Axelsson and Ryde, 2007, Vol. 906, 28-39 p.Conference paper (Other academic)
Abstract [en]

The prompt emission from gamma-ray bursts (GRBs) still requires a physical explanation. Studies of time-resolved GRB spectra, observed in the keV-MeV range, show that a hybrid model consisting of two components, a photospheric and a non-thermal component, in many cases fits bright, single-pulsed bursts as well as, and in some instances even better than, the Band function. With an energy coverage from 8 keV up to 300 GeV, GLAST will give us an unprecedented opportunity to further investigate the nature of the prompt emission. In particular, it will give us the possibility to determine whether a photospheric component is the determining feature of the spectrum or not. Here we present a short study of the ability of GLAST to detect such a photospheric component in the sub-MeV range for typical bursts, using simulation tools developed within the GLAST science collaboration.

Place, publisher, year, edition, pages
2007. Vol. 906, 28-39 p.
Keyword [en]
gamma-ray sources; gamma-ray bursts, X- and gamma-ray telescopes and instrumentation, X- and gamma-ray sources, mirrors, gratings, and detectors
National Category
Astronomy, Astrophysics and Cosmology
URN: urn:nbn:se:kth:diva-81254DOI: 10.1063/1.2737404ISI: 000246655200004ScopusID: 2-s2.0-34547486390ISBN: 978-0-7354-0413-7OAI: diva2:500787
Stockholm Symposium on Gamma-Ray Bursts, Stockholm, SWEDEN, SEP 01, 2006
QC 20120216Available from: 2012-02-13 Created: 2012-02-10 Last updated: 2012-02-16Bibliographically approved

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