REVISITING THE LIGHT CURVES OF GAMMA-RAY BURSTS IN THE RELATIVISTIC TURBULENCE MODEL

Rapid temporal variability has been widely observed in the light curves of gamma-ray bursts (GRBs). One possible mechanism for such variability is related to the relativistic eddies in the jet. In this paper, we include the contribution of the inter-eddy medium together with the eddies to the gamma-...

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Bibliographic Details
Published inThe Astrophysical journal Vol. 776; no. 1; pp. 1 - 5
Main Authors Lin, Da-Bin, Gu, Wei-Min, Hou, Shu-Jin, Liu, Tong, Sun, Mou-Yuan, Lu, Ju-Fu
Format Journal Article
LanguageEnglish
Published United States 10.10.2013
Subjects
ASTROPHYSICS
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
COMPTON EFFECT
COSMIC GAMMA BURSTS
Eddies
Emission
GAMMA ASTRONOMY
GAMMA RADIATION
Gamma ray bursts
Gamma rays
Inverse
JETS
PHOTON EMISSION
Photons
RELATIVISTIC RANGE
Synchrotrons
Temporal logic
TURBULENCE
VISIBLE RADIATION
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Summary:Rapid temporal variability has been widely observed in the light curves of gamma-ray bursts (GRBs). One possible mechanism for such variability is related to the relativistic eddies in the jet. In this paper, we include the contribution of the inter-eddy medium together with the eddies to the gamma-ray emission. We show that the gamma-ray emission can either lead or lag behind the observed synchrotron emission, where the latter originates in the inter-eddy medium and provides most of the seed photons for producing gamma-ray emission through inverse Compton scattering. As a consequence, we argue that the lead/lag found in non-stationary short-lived light curves may not reveal the intrinsic lead/lag of different emission components. In addition, our results may explain the lead of gamma-ray emission with respect to optical emission observed in GRB 080319B.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 23
ISSN:0004-637X
1538-4357
DOI:10.1088/0004-637X/776/1/41