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Conference Paper: Equal arrival time surface effects in GRB afterglows

TitleEqual arrival time surface effects in GRB afterglows
Authors
KeywordsGamma-Ray Bursts
Neutron Stars
Special Relativity
Issue Date2008
Citation
Aip Conference Proceedings, 2008, v. 968, p. 40-42 How to Cite?
AbstractDue to the relativistic motion of gamma-ray burst remnant and its deceleration in the circumburst medium, the equal arrival time surface (EATS) is not spherical, but ellipsoidal. Here the EATS effects are studied numerically. A direct comparison for the cases when the effects are or are not included is presented. Generally speaking, the EATS effect slightly hardens the spectra and postpones the peak time of the afterglows, but does not change the shapes of the spectra and light curves significantly. in the cases of a density jump or an energy-injection, the effect smears out the variations in the afterglows markedly. For the rapid rebrightening observed in the optical afterglow of GRB 030329 at t ∼ 1.6 d, the energy-injection model can give a best explanation as compared with the density jump model and two-component jet model. However, the predicted rebrightening is still not as rapid as observations due to EATS effect. © 2008 American Institute of Physics.
Persistent Identifierhttp://hdl.handle.net/10722/176206
ISSN
References

 

DC FieldValueLanguage
dc.contributor.authorHuang, YFen_US
dc.contributor.authorLu, Yen_US
dc.contributor.authorCheng, KSen_US
dc.date.accessioned2012-11-26T09:06:52Z-
dc.date.available2012-11-26T09:06:52Z-
dc.date.issued2008en_US
dc.identifier.citationAip Conference Proceedings, 2008, v. 968, p. 40-42en_US
dc.identifier.issn0094-243Xen_US
dc.identifier.urihttp://hdl.handle.net/10722/176206-
dc.description.abstractDue to the relativistic motion of gamma-ray burst remnant and its deceleration in the circumburst medium, the equal arrival time surface (EATS) is not spherical, but ellipsoidal. Here the EATS effects are studied numerically. A direct comparison for the cases when the effects are or are not included is presented. Generally speaking, the EATS effect slightly hardens the spectra and postpones the peak time of the afterglows, but does not change the shapes of the spectra and light curves significantly. in the cases of a density jump or an energy-injection, the effect smears out the variations in the afterglows markedly. For the rapid rebrightening observed in the optical afterglow of GRB 030329 at t ∼ 1.6 d, the energy-injection model can give a best explanation as compared with the density jump model and two-component jet model. However, the predicted rebrightening is still not as rapid as observations due to EATS effect. © 2008 American Institute of Physics.en_US
dc.languageengen_US
dc.relation.ispartofAIP Conference Proceedingsen_US
dc.subjectGamma-Ray Burstsen_US
dc.subjectNeutron Starsen_US
dc.subjectSpecial Relativityen_US
dc.titleEqual arrival time surface effects in GRB afterglowsen_US
dc.typeConference_Paperen_US
dc.identifier.emailCheng, KS: hrspksc@hkucc.hku.hken_US
dc.identifier.authorityCheng, KS=rp00675en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1063/1.2840443en_US
dc.identifier.scopuseid_2-s2.0-72349096563en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-72349096563&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume968en_US
dc.identifier.spage40en_US
dc.identifier.epage42en_US
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridHuang, YF=7501574835en_US
dc.identifier.scopusauthoridLu, Y=35237981100en_US
dc.identifier.scopusauthoridCheng, KS=9745798500en_US

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