Complicated variations in the early optical afterglow of GRB 090726

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SYSNO ASEP	0355210
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Complicated variations in the early optical afterglow of GRB 090726
Author(s)	Šimon, Vojtěch (ASU-R)_{ORCID, RID} Polášek, Cyril (ASU-R) Jelínek, M. (ES) Hudec, René (ASU-R)_{RID, ORCID} Štrobl, Jan (ASU-R)_{ORCID, RID}
Source Title	Astronomy & Astrophysics. - : EDP Sciences - ISSN 0004-6361 Roč. 510, February (2010), A49/1-A49/5
Number of pages	5 s.
Language	eng - English
Country	FR - France
Keywords	gamma-ray burst ; radiation mechanisms ; plasmas
Subject RIV	BN - Astronomy, Celestial Mechanics, Astrophysics
R&D Projects	GA205/08/1207 GA ČR - Czech Science Foundation (CSF)
CEZ	AV0Z10030501 - ASU-R (2005-2011)
UT WOS	000274305100050
DOI	10.1051/0004-6361/200913393
Annotation	We studied the optical afterglow (OA) of the gamma-ray burst GRB 090726, which we observed by our robotic CCD telescope with the D 50 cm mirror. We explained the superimposed short flare by activity of the central engine. This OA is the representative of the least luminous ones and its initial Lorentz factor may even lie on the lower end of the range observed in GRBs. Neither the dust nor the gaseous component of the circumburst medium underwent any evolution during the decay of this OA.
Workplace	Astronomical Institute
Contact	Radka Svašková, bibl@asu.cas.cz, Tel.: 323 620 326
Year of Publishing	2011

Number of the records: 1