The Astrophysical journal, 2012-08, Vol.754 (2), p.1-5
2012
Details
- Autor(en) / Beteiligte
- Titel
- FERMI LARGE AREA TELESCOPE OBSERVATIONS OF GRB 110625A
- Ist Teil von
- The Astrophysical journal, 2012-08, Vol.754 (2), p.1-5
- Ort / Verlag
- Bristol: IOP
- Erscheinungsjahr
- 2012
- Link zum Volltext
- Quelle
- Free E-Journal (出版社公開部分のみ）
- Beschreibungen/Notizen
- Gamma-ray bursts (GRBs) that emit photons at GeV energies form a small but significant population of GRBs. However, the number of GRBs whose GeV-emitting period is simultaneously observed in X-rays remains small. We report gamma -ray observations of GRB 110625A using Fermi's Large Area Telescope in the energy range 100 MeV-20 GeV. Gamma-ray emission at these energies was clearly detected using data taken between 180 s and 580 s after the burst, an epoch after the prompt emission phase. The GeV light curve differs from a simple power-law decay, and probably consists of two emission periods. Simultaneous Swift X-Ray Telescope observations did not show flaring behaviors as in the case of GRB 100728A. We discuss the possibility that the GeV emission is the synchrotron self-Compton radiation of underlying ultraviolet flares.
- Sprache
- Englisch
- Identifikatoren
- ISSN: 0004-637XeISSN: 1538-4357DOI: 10.1088/0004-637X/754/2/117Titel-ID: cdi_osti_scitechconnect_22039238
- Format
- –
- Schlagworte
- Astronomy, ASTROPHYSICS, ASTROPHYSICS, COSMOLOGY AND ASTRONOMY, COMPTON EFFECT, COSMIC GAMMA BURSTS, Decay, DIAGRAMS, Earth, ocean, space, Emission, Energy use, Exact sciences and technology, Flares, GAMMA ASTRONOMY, GAMMA RADIATION, Gamma ray bursts, GEV RANGE, MEV RANGE, PHOTON EMISSION, Photons, STARS, STELLAR FLARES, Synchrotrons, TELESCOPE COUNTERS, Telescopes, ULTRAVIOLET RADIATION, VISIBLE RADIATION, X RADIATION