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dc.contributor.authorGranot, J.
dc.date.accessioned2009-03-02T08:51:20Z
dc.date.available2009-03-02T08:51:20Z
dc.date.issued2008
dc.identifier.citationGranot , J 2008 , ' Analytic expressions for the surface brightness profile of gamma-ray burst afterglow images ' , Monthly Notices of the Royal Astronomical Society , vol. 390 , no. 1 , pp. L46-L50 . https://doi.org/10.1111/j.1745-3933.2008.00533.x
dc.identifier.issn0035-8711
dc.identifier.otherPURE: 154115
dc.identifier.otherPURE UUID: c6693b07-9442-4bc4-9950-3b5f9c746feb
dc.identifier.otherdspace: 2299/2979
dc.identifier.otherScopus: 79952404917
dc.identifier.urihttp://hdl.handle.net/2299/2979
dc.descriptionThe original article can be found at: http://www3.interscience.wiley.com Copyright Royal Astronomical Society. DOI: 10.1111/j.1745-3933.2008.00533.x
dc.description.abstractThe exact profile of a gamma-ray burst (GRB) afterglow image on the plane of the sky can provide important constraints on the underlying physics. In particular, it can test whether the magnetic field in the emitting shocked external medium decreases significantly with the distance behind the shock front, or remains roughly constant. Moreover, it enables more accurate measurements of the afterglow image size and the expected scintillation properties. In this work analytic expressions are derived for the afterglow image in power law segments (PLSs) of the afterglow synchrotron spectrum in which the emission originates from a very thin layer just behind the shock, while simple semi-analytic expressions are derived for the remaining PLSs in which the emission arises from the bulk of the shocked fluid. In all cases the expressions are for a general power law external density profile, and are convenient to use in afterglow studies.en
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.titleAnalytic expressions for the surface brightness profile of gamma-ray burst afterglow imagesen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.description.statusPeer reviewed
rioxxterms.versionofrecordhttps://doi.org/10.1111/j.1745-3933.2008.00533.x
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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