High-Energy Observation of GRB 090217 with Fermi

Journal Article · Fri Mar 26 00:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3395990· OSTI ID:21367043

Cutini, S ^[1]; Piron, F ^[2]; Kienlin, A von ^[3]

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1. ASI Science Data Center, ASDC, ESRIN, Frascati (Italy)
2. Laboratoire de Physique Theorique et Astroparticules, Universite Montpellier 2, CNRS/IN2P3, Montpellier (France)
3. Max-Planck-Institut fuer extraterrestrische Physik, D-85741 Garching (Germany)

The Fermi observatory is advancing our knowledge of Gamma-Ray Bursts (GRBs) through pioneering observations at high energies, covering more then 7 decades of energy with the two on-board detectors, the Large Area Telescope (LAT) and the Gamma-ray Burst Monitor (GBM). Here we report on the observation of long GRB 090217 which triggered the GBM and as been independently detected by the on-ground blind search LAT algorithm. We present the GBM and LAT observations, including a temporal profile and time-resolved spectral analysis from 8 keV up to approx1 GeV. The time-averaged and time-resolved spectra are well reproduced by a Band model, with no substantial spectral evolution. We compare these observations to the other LAT detections of long bursts, and discuss some theoretical implications on GRB high-energy emission.

• OSTI ID: 21367043
• Journal Information: AIP Conference Proceedings, Vol. 1223, Issue 1; Conference: 7. workshop on gamma-ray physics in the LHC era, Assisi (Italy), 7-9 Oct 2009; Other Information: DOI: 10.1063/1.3395990; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ALGORITHMS
COMPARATIVE EVALUATIONS
COSMIC GAMMA BURSTS
COSMIC GAMMA SOURCES
COSMIC PHOTONS
GAMMA ASTRONOMY
GAMMA SPECTROSCOPY
GEV RANGE
KEV RANGE
TELESCOPE COUNTERS
TIME RESOLUTION
X-RAY SPECTRA
ASTRONOMY
BOSONS
COSMIC RADIATION
COSMIC RAY SOURCES
ELEMENTARY PARTICLES
ENERGY RANGE
EVALUATION
IONIZING RADIATIONS
MASSLESS PARTICLES
MATHEMATICAL LOGIC
PHOTONS
PRIMARY COSMIC RADIATION
RADIATIONS
RESOLUTION
SPECTRA
SPECTROSCOPY
TIMING PROPERTIES