Science-advisor
REGISTER info/FAQ
Login
username
password
     
forgot password?
register here
 
Research articles
  search articles
  reviews guidelines
  reviews
  articles index
My Pages
my alerts
  my messages
  my reviews
  my favorites
 
 
Stat
Members: 3643
Articles: 2'487'895
Articles rated: 2609

28 March 2024
 
  » arxiv » astro-ph/0612545

 Article overview


Extensive multiband study of the X-ray rich GRB 050408. A likely off-axis event with an intense energy injection
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 ; Y. Urata ; W.H. Ip ; T. Tamagawa ; D. Kinoshita ; T. Mizuno ; Y. Arai ; H. Yamagishi ; T. Soyano ; F. Usui ; M. Tashiro ; 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 ;
Date 19 Dec 2006
AbstractAims. 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.
Source arXiv, astro-ph/0612545
Services Forum | Review | PDF | Favorites   
 
Visitor rating: did you like this article? no 1   2   3   4   5   yes

No review found.
 Did you like this article?

This article or document is ...
important:
of broad interest:
readable:
new:
correct:
Global appreciation:

  Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.

browser claudebot






ScienXe.org
» my Online CV
» Free


News, job offers and information for researchers and scientists:
home  |  contact  |  terms of use  |  sitemap
Copyright © 2005-2024 - Scimetrica