GRB 020531: A Short, Hard Gamma-Ray Burst Localized and Observed by HETE-2

Details GRB 020531: A Short, Hard Gamma-Ray Burst Localized and Observed by HETE-2 GRB 020531: A Short, Hard Gamma-Ray Burst Localized and Observed by HETE-2

2003-12-18

arxiv.org/abs/astro-ph/0312503v1

Astronomy and Astrophysics

Astrophysics

4 pages, 3 figures, to appear in proc. 3rd Rome Workshop on Gamma-Ray Bursts in the Afterglow Era, 2002

Scientific paper

The HETE-2 FREGATE and WXM instruments detected a short, hard GRB at 00:26:18.72 UT on 31 May 2002. A preliminary localization was reported as a GCN Position Notice 88 min after the burst, and a refined localization was disseminated 123 minutes later. An IPN localization of the burst was reported 18 hours after the GRB, and a refined IPN localization was disseminated ~5 days after the burst. The final IPN localization, disseminated on 25 July 2002, is a diamond-shaped region centered on RA=15h 15m 11.18s, Dec=-19o 24' 27.08" (J2000), and has an area of ~9 square arcminutes (99.7% confidence region). The prompt localization of the burst by HETE-2, coupled with the refinement of the localization by the IPN, made possible the most sensitive follow-up observations to date of a short, hard GRB at radio, optical, and X-ray wavelengths. The time history of GRB020531 at high (>30 keV) energies consists of a short, intense spike followed by a much less intense secondary peak, which is characteristic of many short, hard bursts. The duration of the burst increases with decreasing energy and the spectrum of the burst evolves from hard to soft, behaviors which are similar to those of long GRBs. This suggests that short, hard GRBs are closely related to long GRBs.

Affiliated with

Also associated with

No associations

Rating

GRB 020531: A Short, Hard Gamma-Ray Burst Localized and Observed by HETE-2 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with GRB 020531: A Short, Hard Gamma-Ray Burst Localized and Observed by HETE-2, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and GRB 020531: A Short, Hard Gamma-Ray Burst Localized and Observed by HETE-2 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-307561