SUCRA(さくら: Saitama University Cyber Repository of Academic Resources)は、埼玉大学に在籍する研究者の学術雑誌論文、紀要論文、科学研究費補助金成果報告書、学位論文、研究発表プレゼン資料などを登録し、広く世界に発信しています。 埼玉大学に在籍する皆様は、著作物をSUCRAを通じて発信することができます。詳しくは「成果物の登録方法」をご覧ください。
A de Ugarte Postigo
T.A. Fatkhullin
G. Johannesson
J. Gorosabel
V.V. Sokolov
A.J. Castro-Tirado
Yu.Yu. Balega
O.I. Spiridonova
M. Jelinek
S. Guziy
D. Perez-Ramirez
J. Hjorth
P. Laursen
D. Bersier
S.B. Pandey
M. Bremer
A. Monfardini
K.Y. Huang
Urata, Yuji
W.H. Ip
T. Tamagawa
D. Kinoshita
T. Mizuno
Y. Arai
H. Yamagishi
T. Soyano
F. Usui
Tashiro, Makoto
K. Abe
K. Onda
Z. Aslan
I. Khamitov
T. Ozisik
U. Kiziloglu
I. Bikmaev
N. Sakhibullin
R. Burenin
M. Pavlinsky
R. Sunyaev
D. Bhattacharya
A.P. Kamble
C.H. Ishwara Chandra
S.A. Trushkin
著者 所属
理化学研究所
埼玉大学大学院理工学研究科物質科学部門
著者 所属(別言語)
Institute for Physics and Chemical Research (RIKEN)
Graduate School of Science and Engineering, Saitama University
Aims. Understand the shape and implications of the multiband light 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 gamma-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.
Extensive multiband study of the X-ray rich GRB050408 A likely off-axis event with an intense energy injection
A1002309.pdf
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SUCRAの概要
