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dc.contributor.authorCurran, Peter
dc.contributor.authorStarling, R.
dc.contributor.authorvan der Horst, A.
dc.contributor.authorWijers, R.
dc.identifier.citationCurran, P. and Starling, R. and van der Horst, A. and Wijers, R. 2009. Testing the blast wave model with Swift GRBs. Monthly Notices of the Royal Astronomical Society. 395: pp. 580-592.

The complex structure of the light curves of Swift Gamma-Ray Bursts (GRBs) has made theidentification of breaks, and the interpretation of the blast wave caused by the burst, moredifficult than in the pre-Swift era. We aim to identify breaks, which are possibly hidden, andto constrain the blast wave parameters; electron energy distribution, p, density profile of thecircumburst medium, k, and the continued energy injection index, q. We do so by comparingthe observed multiwavelength light curves and X-ray spectra of our sample to the predictionsof the blast wave model. We can successfully interpret all of the bursts in our sample of 10,except two, within this framework and we can estimate, with confidence, the electron energydistribution index for 6 of the sample. Furthermore, we identify jet breaks in a number of thebursts. A statistical analysis of the distribution of p reveals that, even in the most conservativecase of least scatter, the values are not consistent with a single, universal value. The valuesof k suggest that the circumburst density profiles are not drawn from only one of the constantdensity or wind-like media populations.

dc.publisherOxford University Press
dc.subjectradiation mechanisms: non-thermal – gamma rays: bursts – X-rays: bursts
dc.titleTesting the blast wave model with Swift GRBs
dc.typeJournal Article
dcterms.source.titleMonthly Notices of the Royal Astronomical Society
curtin.accessStatusOpen access via publisher

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