Observational difference between gamma and X-ray properties of optically dark and bright GRBs

Journal Article · Thu May 22 00:00:00 EDT 2008 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2943506· OSTI ID:21137206

Balazs, L G ^[1]; Horvath, I ^[2]; Bagoly, Zs; Veres, P ^[3]; Meszaros, A ^[4]

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1. Konkoly Observatory, Budapest (Hungary)
2. Bolyai Military University, Budapest (Hungary)
3. Eoetvoes University, Budapest (Hungary)
4. Charles University, Prague (Czech Republic)

Using the discriminant analysis of the multivariate statistical analysis we compared the distribution of the physical quantities of the optically dark and bright GRBs, detected by the BAT and XRT on board of the Swift Satellite. We found that the GRBs having detected optical transients (OT) have systematically higher peak fluxes and lower HI column densities than those without OT.

• OSTI ID: 21137206
• Journal Information: AIP Conference Proceedings, Vol. 1000, Issue 1; Conference: Santa Fe conference on gamma-ray bursts 2007, Santa Fe, NM (United States), 5-9 Nov 2007; Other Information: DOI: 10.1063/1.2943506; (c) 2008 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
DENSITY
DISTRIBUTION
GAMMA ASTRONOMY
GAMMA DETECTION
MEASURING METHODS
MULTIVARIATE ANALYSIS
RADIO TELESCOPES
TELESCOPE COUNTERS
TRANSIENTS
X RADIATION