Can We Trust GRB High Energy Correlations?

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

DOI:https://doi.org/10.1063/1.2943436· OSTI ID:21137184

Butler, Nathaniel R ^[1]; Kocevski, Daniel; Bloom, Joshua S ^[2]

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1. Townes Fellow, Space Sciences Laboratory, University of California, Berkeley, CA, 94720 (United States)
2. Astronomy Department, University of California, 445 Campbell Hall, Berkeley, CA 94720 (United States)

We show that several GRB correlations have common features indicative of an origin in selection effects. We focus on the possible origin of the E{sub pk}-E{sub iso} 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 E{sub pk}-E{sub {gamma}} ('Ghirlanda') correlation is effectively independent of the GRB redshifts z, which suggests it contains little intrinsic physics.

• OSTI ID: 21137184
• 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: 10.1063/1.2943436; (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
CORRELATIONS
COSMIC GAMMA BURSTS
COSMIC GAMMA SOURCES
COSMIC PHOTONS
COSMOLOGY
GAMMA ASTRONOMY
GAMMA DETECTION
MEASURING METHODS
RED SHIFT