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DETECTION OF HIGH-ENERGY GAMMA-RAY EMISSION DURING THE X-RAY FLARING ACTIVITY IN GRB 100728A
- Source :
- The Astrophysical journal letters, The Astrophysical journal letters, Bristol : IOP Publishing, 2011, 734, pp.L27. ⟨10.1088/2041-8205/734/2/L27⟩, The Astrophysical journal letters, 2011, 734, pp.L27. ⟨10.1088/2041-8205/734/2/L27⟩
- Publication Year :
- 2011
-
Abstract
- We present the simultaneous Swift and Fermi observations of the bright GRB100728A and its afterglow. The early X-ray emission is dominated by a vigorous flaring activity continuing until 1 ks after the burst. In the same time interval high energy emission is significantly detected by the Fermi/LAT. Marginal evidence of GeV emission is observed up to later times. We discuss the broadband properties of this burst within both the internal and external shock scenarios, with a particular emphasis on the relation between X-ray flares, the GeV emission and a continued long-duration central engine activity as their power source.<br />Comment: accepted for publication in ApJ Letters. Contact authors: E. Troja, L. Piro, V. Vasileiou, S. Cutini, J. E. McEnery
- Subjects :
- High energy
[PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE]
Astrophysics::High Energy Astrophysical Phenomena
FOS: Physical sciences
Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
01 natural sciences
7. Clean energy
gamma-ray burst: individual: GRB100728A
radiation mechanisms: non-thermal
0103 physical sciences
gamma-ray burst: individual (GRB100728A)
010303 astronomy & astrophysics
Astrophysics::Galaxy Astrophysics
Physics
High Energy Astrophysical Phenomena (astro-ph.HE)
010308 nuclear & particles physics
[SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE]
Gamma ray
X-ray
Astronomy and Astrophysics
non-thermal [radiation mechanisms]
Afterglow
13. Climate action
Space and Planetary Science
individual: GRB100728A [gamma-ray burst]
Astrophysics - High Energy Astrophysical Phenomena
Fermi Gamma-ray Space Telescope
Subjects
Details
- Language :
- English
- ISSN :
- 20418205 and 20418213
- Database :
- OpenAIRE
- Journal :
- The Astrophysical journal letters, The Astrophysical journal letters, Bristol : IOP Publishing, 2011, 734, pp.L27. ⟨10.1088/2041-8205/734/2/L27⟩, The Astrophysical journal letters, 2011, 734, pp.L27. ⟨10.1088/2041-8205/734/2/L27⟩
- Accession number :
- edsair.doi.dedup.....faec9272ff437cdf306f12294202e1d1