Document Type

Article

Publication Date

4-2005

Publication Title

Astronomy & Astrophysics

Volume

433

Issue

1

Publisher

EDP Sciences

Abstract

GRB 040403 is one of the faintest gamma-ray bursts for which a rapid and accurate localization has been obtained. Here we report on the gamma-ray properties of this burst, based on observations with the IBIS instrument aboard INTEGRAL, and the results of searches for its optical afterglow. The steep spectrum (power law photon index =1.9 in the 20–200 keV range) implies that GRB 040403 is most likely an X-ray rich burst. Our optical limit of R >24.2 at 16.5 h after the burst, indicates a rather faint afterglow, similar to those seen in other relatively soft and faint bursts.

Comments

This manuscript has been published in the Astronomy & Astrophysics Journal. Please find the published version here (note that a subscription is necessary to access this version):

http://www.aanda.org/index.php?option=com_article&access=doi&doi=10.1051/0004-6361:20042030&Itemid=129

Download

Share

COinS