GRB spectra in the MeV range: hints from INTEGRAL

Journal Article · Thu Jul 12 00:00:00 EDT 2007 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2757322· OSTI ID:21067232

Bulik, Tomasz ^[1]; Denis, Miroslaw ^[2]; Marcinkowski, Radoslaw ^[3]; Goldoni, Paolo; Laurent, Philip ^[4]; Osuch, Lukasz ^[1]

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1. Astronomical Observatory, University of Warsaw, Al. Ujazdowskie 4, 00-478 Warsaw (Poland)
2. Space Research Center, Bartycka 18a, 00-716 Warsaw (Poland)
3. Institute for Nuclear Studies, Swierk, 05-400 Otwock (Poland)
4. SAp CEA, 91911 Gif-sur-Yvette (France)

INTEGRAL detects a large number of gamma-ray bursts outside of its field of view with the SPI ACS. Several of these bursts are also detected by IBIS. We present the results of the spectral analysis using the ISRGI, PICSIT and Compton mode data of several bursts. These bursts show very hard spectra with the high energy index reaching -2 above 1 MeV We show that there is a group of bursts with the peak energy Epeak in the MeV range. We discuss the implications of these findings for GLAST.

• OSTI ID: 21067232
• Journal Information: AIP Conference Proceedings, Vol. 921, Issue 1; Conference: 1. GLAST symposium, Stanford, CA (United States), 5-8 Feb 2007; Other Information: DOI: 10.1063/1.2757322; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
COSMIC GAMMA BURSTS
COSMIC GAMMA SOURCES
COSMIC PHOTONS
GAMMA DETECTION
GAMMA SPECTRA
INDEXES
MEV RANGE
TELESCOPE COUNTERS