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/0203467

 Article overview


GRB 011121: A Massive Star Progenitor
P. A. Price ; E. Berger ; D. E. Reichart ; S. R. Kulkarni ; R. Subrahmanyan ; R. M. Wark ; M. H. Wieringa ; D. A. Frail ; J. Bailey ; B. Boyle ; E. Corbett ; K. Gunn ; S. D. Ryder ; N. Seymour ; K. Koviak ; P. McCarthy ; M. Phillips ; T. S. Axelrod ; J. S. Bloom ; S. G. Djorgovski ; D. W. Fox ; T. J. Galama ; F. A. Harrison ; K. Hurley ; R. Sari ; B. P. Schmidt ; S. A. Yost ; M. J. I. Brown ; T. Cline ; F. Frontera ; C. Guidorzi ; E. Montanari ;
Date 26 Mar 2002
Subject astro-ph
AbstractOf the cosmological gamma-ray bursts, GRB 011121 has the lowest redshift, z=0.36. More importantly, the multi-color excess in the afterglow detected in the Hubble Space Telescope (HST) light curves is compelling observational evidence for an underlying supernova. Here we present near-infrared and radio observations of the afterglow. We undertake a comprehensive modeling of these observations and those reported in the literature and find good evidence favoring a wind-fed circumburst medium. In detail, we infer the progenitor had a mass loss rate of Mdot ~ 10^-7 / v_w3 Mo/yr where v_w3 is the speed of the wind from the progenitor in units of 10^3 km/s. This mass loss rate is similar to that inferred for the progenitor of SN 1998bw which has been associated with GRB 980425. Our data, taken in conjunction with the HST results of Bloom et al. (2002), provide a consistent picture: the long duration GRB 011121 had a massive star progenitor which exploded as a supernova at about the same time as the GRB event.
Source arXiv, astro-ph/0203467
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