Using GRB 080723B to cross-calibrate Fermi/GBM and INTEGRAL

Journal Article · Mon May 25 00:00:00 EDT 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3155949· OSTI ID:21308680

Kienlin, A von ^[1]; Briggs, M S; Connoughton, V; Preece, R D ^[2]; McBreen, S ^[1]; Sazonov, Sergey; Tsygankov, Sergey ^[3]; Wilson-Hodge, C A ^[4]

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1. Max-Planck-Institut fuer extraterrestrische Physik, Giessenbachstrasse, Garching (Germany)
2. University of Alabmama, Huntsville, Alabama (United States)
3. Max-Planck-Institut fuer Astrophysik, Karl-Schwarzschild-Str. 1, Garching (Germany)
4. NASA/Marshall Space-Flight Center, Huntsville, Alabama (United States)

On July 23, 2008 GRB 080723B, a bright GRB lasting about 105 s was detected by the INTEGRAL burst alert system. This burst was also detected by the Fermi Gamma-ray burst monitor. At this time no Fermi/GBM GCN notices were distributed to the public because Fermi was still in commissioning phase. The simultaneous detection of a bright GRB by both satellites gives us the opportunity to cross-calibrate the GBM with the already well-calibrated instruments on-board INTEGRAL, the Spectrometer SPI and the Imager IBIS. Time-resolved spectroscopy of this long and structured GRB is of special importance because Fermi was slewing during the GRB was still ongoing. In this paper we present a first and still preliminary analysis of the GBM spectra and compare them to those obtained by SPI for the same selection of time intervals. A more accurate cross-calibration will be forthcoming when the improved in-flight calibration of GBM is available and the corresponding data and responses can be reprocessed.

• OSTI ID: 21308680
• Journal Information: AIP Conference Proceedings, Vol. 1133, Issue 1; Conference: 6. Huntsville symposium on gamma-ray burst, Huntsville, AL (United States), 20-23 Oct 2008; Other Information: DOI: 10.1063/1.3155949; (c) 2009 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
CALIBRATION
COMMISSIONING
COMPARATIVE EVALUATIONS
COSMIC GAMMA BURSTS
COSMIC GAMMA SOURCES
COSMIC PHOTONS
GAMMA ASTRONOMY
GAMMA DETECTION
GAMMA SPECTRA
GAMMA SPECTROMETERS
SATELLITES
SCINTILLATION COUNTERS
TELESCOPE COUNTERS
TIME RESOLUTION