Can We Trust GRB High Energy Correlations?

We show that several GRB correlations have common features indicative of an origin in selection effects. We focus on the possible origin of the Epk-Eiso correlation in Swift data due to detector threshold truncation. The existence of faint Swift events calls into question inferences based on pre-Swi...

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Bibliographic Details
Published inAIP conference proceedings Vol. 1000; no. 1; pp. 16 - 19
Main Authors Butler, Nathaniel R, Kocevski, Daniel, Bloom, Joshua S
Format Journal Article
LanguageEnglish
Published United States 01.01.2008
Subjects
CORRELATIONS
COSMIC GAMMA BURSTS
COSMIC GAMMA SOURCES
COSMIC PHOTONS
COSMOLOGY
GAMMA ASTRONOMY
GAMMA DETECTION
INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
MEASURING METHODS
RED SHIFT
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Summary:We show that several GRB correlations have common features indicative of an origin in selection effects. We focus on the possible origin of the Epk-Eiso correlation in Swift data due to detector threshold truncation. The existence of faint Swift events calls into question inferences based on pre-Swift surveys which must be subject to complicated incompleteness effects. Also, we show that the Epk-Eg ('Ghirlanda') correlation is effectively independent of the GRB redshifts z, which suggests it contains little intrinsic physics.
Bibliography:SourceType-Scholarly Journals-2
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ObjectType-Conference Paper-1
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SourceType-Conference Papers & Proceedings-1
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ISBN:9780735405332
0735405336
ISSN:0094-243X
1551-7616
DOI:10.1063/1.2943436