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Extensive multiband study of the X-ray rich GRB 050408: A likely off-axis event with an intense energy injection

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dc.contributor.author De Ugarte Postigo A.
dc.contributor.author Fatkhullin T.
dc.contributor.author Jóhannesson G.
dc.contributor.author Gorosabel J.
dc.contributor.author Sokolov V.
dc.contributor.author Castro-Tirado A.
dc.contributor.author Balega Y.
dc.contributor.author Spiridonova O.
dc.contributor.author Jelínek M.
dc.contributor.author Guziy S.
dc.contributor.author Pérez-Ramírez D.
dc.contributor.author Hjorth J.
dc.contributor.author Laursen P.
dc.contributor.author Bersier D.
dc.contributor.author Pandey S.
dc.contributor.author Bremer M.
dc.contributor.author Monfardini A.
dc.contributor.author Huang K.
dc.contributor.author Urata Y.
dc.contributor.author Ip W.
dc.contributor.author Tamagawa T.
dc.contributor.author Kinoshita D.
dc.contributor.author Mizuno T.
dc.contributor.author Arai Y.
dc.contributor.author Yamagishi H.
dc.contributor.author Soyano T.
dc.contributor.author Usui F.
dc.contributor.author Tashiro M.
dc.contributor.author Abe K.
dc.contributor.author Onda K.
dc.contributor.author Aslan Z.
dc.contributor.author Khamitov I.
dc.contributor.author Ozisik T.
dc.contributor.author Kiziloglu U.
dc.contributor.author Bikmaev I.
dc.contributor.author Sakhibullin N.
dc.contributor.author Burenin R.
dc.contributor.author Pavlinsky M.
dc.contributor.author Sunyaev R.
dc.contributor.author Bhattacharya D.
dc.contributor.author Kamble A.
dc.contributor.author Chandra C.
dc.contributor.author Trushkin S.
dc.date.accessioned 2018-09-18T20:01:32Z
dc.date.available 2018-09-18T20:01:32Z
dc.date.issued 2007
dc.identifier.issn 0004-6361
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/135841
dc.description.abstract Aims. Understand the shape and implications of the multiband ligth curve of GRB 050408, an X-ray rich (XRR) burst. Methods. We present a multiband optical light curve, covering the time from the onset of the γ-ray event to several months after, when we only detect the host galaxy. Together with X-ray, millimetre and radio observations we compile what, to our knowledge, is the most complete multiband coverage of an XRR burst afterglow to date. Results. The optical and X-ray light curve is characterised by an early flattening and an intense bump peaking around 6 days after the burst onset. We explain the former by an off-axis viewed jet, in agreement with the predictions made for XRR by some models, and the latter with an energy injection equivalent in intensity to the initial shock. The analysis of the spectral flux distribution reveals an extinction compatible with a low chemical enrichment surrounding the burst. Together with the detection of an underlying starburst host galaxy we can strengthen the link between XRR and classical long-duration bursts. © ESO 2007.
dc.relation.ispartofseries Astronomy and Astrophysics
dc.subject Gamma rays: bursts
dc.subject Techniques: photometric
dc.title Extensive multiband study of the X-ray rich GRB 050408: A likely off-axis event with an intense energy injection
dc.type Article
dc.relation.ispartofseries-issue 3
dc.relation.ispartofseries-volume 462
dc.collection Публикации сотрудников КФУ
dc.relation.startpage L57
dc.source.id SCOPUS00046361-2007-462-3-SID33846794529


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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