Research articles

search articles

My Pages

Stat

Members: 3645
Articles: 2'504'928
Articles rated: 2609

25 April 2024

» arxiv » astro-ph/0201461

Article overview

GRB010921: Localization and Observations by the HETE Satellite
G. Ricker ; K. Hurley ; D. Lamb ; S. Woosley ; J-L Atteia ; N. Kawai ; R. Vanderspek ; G. Crew ; J. Doty ; J. Villasenor ; G. Prigozhin ; G. Monnelly ; N. Butler ; M. Matsuoka ; Y. Shirasaki ; T. Tamagawa ; K. Torii ; T. Sakamoto ; A. Yoshida ; E. Fenimore ; M. Galassi ; T. Tavenner ; T. Donaghy ; C. Graziani ; M. Boer ; J-P Dezalay ; M. Niel ; J-F Olive ; G.Vedrenne ; T. Cline ; J.G. Jernigan ; A. Levine ; F. Martel ; E. Morgan ; J. Braga ; R. Manchanda ; G. Pizzichini ; K. Takagishi ; M. Yamauchi ;
Date:	29 Dec 2001
Subject:	astro-ph
Abstract:	On September 21 at 18950.56 SOD (05:15:50.56) UT the FREGATE gamma-ray instrument on the High Energy Transient Explorer (HETE) detected a bright gamma-ray burst (GRB). The burst was also seen by the X-detector on the WXM X-ray instrument and was therefore well-localized in the X direction; however, the burst was outside the fully-coded field-of-view of the WXM Y-detector, and therefore information on the Y direction of the burst was limited. Cross-correlation of the HETE and Ulysses time histories yielded an Interplanetary Network (IPN) annulus that crosses the HETE error strip at a ~45 degree angle. The intersection of the HETE error strip and the IPN annulus produces a diamond-shaped error region for the location of the burst having an area of 310 square arcminutes. Based on the FREGATE and WXM light curves, the duration of the burst is characterized by a t90 = 18.4 s in the WXM 4 - 25 keV energy range, and 23.8 s and 21.8 s in the FREGATE 6 - 40 and 32 - 400 keV energy ranges, respectively. The fluence of the burst in these same energy ranges is 4.8 10^{-6}, 5.5 10^{-6}, and 11.4 10^{-6} erg cm^{-2}, respectively. Subsequent optical and radio observations by ground-based observers have identified the afterglow of GRB010921 and determined an apparent redshift of z = 0.450.
Source:	arXiv, astro-ph/0201461
Services:	Forum \| Review \| PDF \| Favorites

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 Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

ScienXe.org
» my Online CV
» Free

News, job offers and information for researchers and scientists:

home

contact

sitemap