Early-time observations of the GRB 050319 optical transient

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dc.authoridGogus, Ersin/0000-0002-5274-6790
dc.authoridGuver, Tolga/0000-0002-3531-9842
dc.authoridAshley, Michael/0000-0003-1412-2028
dc.authoridHorns, Dieter/0000-0003-1945-0119
dc.authoridAlatalo, Katherine/0000-0002-4261-2326
dc.authoridFlewelling, Heather/0000-0002-1050-4056
dc.contributor.authorQuimby, RM
dc.contributor.authorRykoff, ES
dc.contributor.authorYost, SA
dc.contributor.authorAharonian, F
dc.contributor.authorAkerlof, CW
dc.contributor.authorAlatalo, K
dc.contributor.authorAshley, MCB
dc.date.accessioned2025-01-27T20:31:43Z
dc.date.available2025-01-27T20:31:43Z
dc.date.issued2006
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractWe present the unfiltered ROTSE-III light curve of the optical transient associated with GRB 050319 beginning 4 s after the cessation of gamma-ray activity. We fit a power-law function to the data using the revised trigger time given by Chincarini and coworkers, and a smoothly broken power-law to the data using the original trigger disseminated through the GCN notices. Including the RAPTOR data from Wozniak and coworkers, the best-fit power-law indices are alpha = -0.854 +/- 0.014 for the single power-law and alpha(1) = -0.364(-0.019)(+0.020), alpha(2) = -0.881(-0.031)(+0.030), with a break at t(b) = 418(-30)(+31) s for the smoothly broken fit. We discuss the fit results, with emphasis placed on the importance of knowing the true start time of the optical transient for this multipeaked burst. As Swift continues to provide prompt GRB locations, it becomes more important to answer the question, when does the afterglow begin?'' in order to correctly interpret the light curves.
dc.identifier.doi10.1086/499803
dc.identifier.endpage406
dc.identifier.issn0004-637X
dc.identifier.issn1538-4357
dc.identifier.issue1
dc.identifier.scopus2-s2.0-33645532100
dc.identifier.scopusqualityQ1
dc.identifier.startpage402
dc.identifier.urihttps://doi.org/10.1086/499803
dc.identifier.urihttps://hdl.handle.net/20.500.12428/23247
dc.identifier.volume640
dc.identifier.wosWOS:000236143100040
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherIop Publishing Ltd
dc.relation.ispartofAstrophysical Journal
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WoS_20250125
dc.subjectgamma rays : bursts
dc.titleEarly-time observations of the GRB 050319 optical transient
dc.typeArticle

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