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: 2'488'730
Articles rated: 2609

29 March 2024
 
  » arxiv » 1503.7761

 Article overview


A possible Macronova in the late afterglow of the 'long-short' burst GRB 060614
Bin Yang ; Zhi-Ping Jin ; Xiang Li ; Stefano Covino ; Xian-Zhong Zheng ; Kenta Hotokezaka ; Yi-Zhong Fan ; Tsvi Piran ; Da-Ming Wei ;
Date 26 Mar 2015
AbstractGRB 060614 was a unique burst straddling both long and short duration gamma-ray bursts and its physical origin is still debated. Here we re-examine the afterglow data of GRB 060614 and find a significant F814W-band excess at $tsim 13.6$ day after the burst observed by the {it Hubble Space Telescope (HST)}. This corresponds to an extremely-low luminosity $sim 3 imes 10^{40}~{ m erg~s^{-1}}$. The excess component has a very red spectrum and a rapid decline, both unexpected within the present theoretical framework of afterglow. We examine two possible sources of this signal$-$a very weak supernova and a Li-Paczynski Macronova/kilonova. We find that the observed signal is incompatible with a weak supernova. However, it is compatible with the ejection of $sim 0.03-0.1~M_odot$ of $r-$process material. If this interpretation is correct GRB 060614 arose from a compact binary (most likely a black hole$-$neutron star but also possibly a double neutron star) merger.
Source arXiv, 1503.7761
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