Investigating the Lag-Luminosity Relation in the Swift Era with the Burst Alert Telescope (BAT)
Creators
- 1. NASA Goddard Space Flight Center, Code 661, Greenbelt, MD 20771 (United States)
- 2. George Washington University, Washington, DC 20052 (United States)
- 3. CRESST, University of Maryland, Baltimore County, Baltimore, MD 21250 (United States)
- 4. Space Science Division, NASA/Ames Research Center, Moffett Field, CA 94035-1000 (United States)
Description
We report on an investigation that confronts the lag-luminosity relation (LLR), i.e. a surrogate redshift parameterization based upon an empirically determined anti-correlation between the observed isotropic luminosity and the temporal lag between the arrivals of photon pulses in low (25-50 keV) and high (100-300 keV) energy bands, with observations of gamma-ray bursts (GRBs) with Swift's Burst Alert Telescope (BAT). Our initial methodology is based upon a cross-correlation function (CCF) analysis of 64 ms BAT light curves (temporal spectra), for a small subset of GRBs with observed spectroscopic redshift (zobs). Our preliminary results span 4 temporal decades and indicate an agreement with LLR, within the margins of error (excluding GRBs 980425 and 060218)
Additional details
Identifiers
- DOI
- 10.1063/1.2943428;
Publishing Information
- Journal Title
- AIP Conference Proceedings
- Journal Volume
- 1000
- Journal Issue
- 1
- Journal Page Range
- p. 137-141
- ISSN
- 0094-243X
- CODEN
- APCPCS
Conference
- Title
- Santa Fe conference on gamma-ray bursts 2007
- Dates
- 5-9 Nov 2007
- Place
- Santa Fe, NM (United States)
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 40017836
- Subject category
- S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- CORRELATION FUNCTIONS; CORRELATIONS; COSMIC GAMMA BURSTS; COSMIC GAMMA SOURCES; COSMIC PHOTONS; GAMMA ASTRONOMY; GAMMA SPECTRA; KEV RANGE; LUMINOSITY; PULSES; RED SHIFT; TELESCOPE COUNTERS
- Descriptors DEC
- ASTRONOMY; BOSONS; COSMIC RADIATION; COSMIC RAY SOURCES; ELEMENTARY PARTICLES; ENERGY RANGE; FUNCTIONS; IONIZING RADIATIONS; MASSLESS PARTICLES; OPTICAL PROPERTIES; PHOTONS; PHYSICAL PROPERTIES; PRIMARY COSMIC RADIATION; RADIATIONS; SPECTRA
Optional Information
- Notes
- (c) 2008 American Institute of Physics