Volnova, AA, Pozanenko, AS, Gorosabel, J, Perley, DA, Frederiks, DD, Kann, DA, Rumyantsev, VV, Biryukov, VV, Burkhonov, O, Castro-Tirado, AJ, Ferrero, P, Golenetskii, SV, Klose, S, Loznikov, VM, Minaev, PY, Stecklum, B, Svinkin, DS, Tsvetkova, AE, Postigo, ADU and Ulanov, MV (2014) GRB 051008: A long, spectrally hard dust-obscured GRB in a lyman-break galaxy at z ≈ 2.8*. Monthly Notices of the Royal Astronomical Society, 442 (3). pp. 2586-2599. ISSN 0035-8711

Preview

Text Volonva_2014_MNRAS_442_2586.pdf - Published Version Download (946kB) | Preview

Abstract

We present observations of the dark gamma-ray burst GRB 051008 provided by Swift/BAT, Swift/XRT, Konus-WIND, INTEGRAL/SPI-ACS in the high-energy domain and the Shajn, Swift/UVOT, Tautenburg, NOT, Gemini and Keck I telescopes in the optical and near-infrared bands. The burst was detected only in gamma- and X-rays and neither a prompt optical nor a radio afterglow was detected down to deep limits. We identified the host galaxy of the burst, which is a typical Lyman-break galaxy (LBG) with R-magnitude of 24.06 ± 0.10 mag. A redshift of the galaxy of z = 2.77+0.15-0.20 is measured photometrically due to the presence of a clear, strong Lyman-break feature. The host galaxy is a small starburst galaxy with moderate intrinsic extinction (AV = 0.3) and has a star formation rate of ~60M( yr-1 typical for LBGs. It is one of the few cases where a GRB host has been found to be a classical LBG. Using the redshift we estimate the isotropic-equivalent radiated energy of the burst to be Eiso = (1.15 ± 0.20) × 1054 erg.We also provide evidence in favour of the hypothesis that the darkness ofGRB051008 is due to local absorption resulting from a dense circumburst medium © 2014 The Authors.

Item Type:	Article
Additional Information:	This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
Uncontrolled Keywords:	0201 Astronomical And Space Sciences
Subjects:	Q Science > QB Astronomy Q Science > QC Physics Q Science > QD Chemistry
Divisions:	Astrophysics Research Institute
Publisher:	Oxford University Press
Date Deposited:	23 May 2017 12:21
Last Modified:	17 May 2022 14:50
DOI or ID number:	10.1093/mnras/stu999
URI:	https://researchonline.ljmu.ac.uk/id/eprint/6558

View Item