Origin of the GeV emission during the X-ray flaring activity in GRB 100728A

Hao Ning He; Bin Bin Zhang; Xiang Yu Wang; Zhuo Li; Peter Mészáros

doi:10.1088/0004-637X/753/2/178

Origin of the GeV emission during the X-ray flaring activity in GRB 100728A

Hao Ning He, Bin Bin Zhang, Xiang Yu Wang, Zhuo Li, Peter Mészáros

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17 Scopus citations

Abstract

Recently, Fermi-LAT detected GeV emission during the X-ray flaring activity in GRB 100728A. We study various scenarios for its origin. The hard spectrum of the GeV emission favors the external inverse Compton (EIC) origin in which X-ray flare photons are up-scattered by relativistic electrons in the external forward shock. This EIC scenario, with anisotropic scattering effect taken into account, can reproduce the temporal and spectral properties of the GeV emission in GRB 100728A.

Original language	English (US)
Article number	178
Journal	Astrophysical Journal
Volume	753
Issue number	2
DOIs	https://doi.org/10.1088/0004-637X/753/2/178
State	Published - Jul 10 2012

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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10.1088/0004-637X/753/2/178

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abstract = "Recently, Fermi-LAT detected GeV emission during the X-ray flaring activity in GRB 100728A. We study various scenarios for its origin. The hard spectrum of the GeV emission favors the external inverse Compton (EIC) origin in which X-ray flare photons are up-scattered by relativistic electrons in the external forward shock. This EIC scenario, with anisotropic scattering effect taken into account, can reproduce the temporal and spectral properties of the GeV emission in GRB 100728A.",

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AU - He, Hao Ning

AU - Zhang, Bin Bin

AU - Wang, Xiang Yu

AU - Li, Zhuo

AU - Mészáros, Peter

PY - 2012/7/10

Y1 - 2012/7/10

N2 - Recently, Fermi-LAT detected GeV emission during the X-ray flaring activity in GRB 100728A. We study various scenarios for its origin. The hard spectrum of the GeV emission favors the external inverse Compton (EIC) origin in which X-ray flare photons are up-scattered by relativistic electrons in the external forward shock. This EIC scenario, with anisotropic scattering effect taken into account, can reproduce the temporal and spectral properties of the GeV emission in GRB 100728A.

AB - Recently, Fermi-LAT detected GeV emission during the X-ray flaring activity in GRB 100728A. We study various scenarios for its origin. The hard spectrum of the GeV emission favors the external inverse Compton (EIC) origin in which X-ray flare photons are up-scattered by relativistic electrons in the external forward shock. This EIC scenario, with anisotropic scattering effect taken into account, can reproduce the temporal and spectral properties of the GeV emission in GRB 100728A.

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Origin of the GeV emission during the X-ray flaring activity in GRB 100728A

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