GRB 051008: a long, spectrally hard dust-obscured GRB in a Lyman-break galaxy at z = 2.8
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GRB 051008 : a long, spectrally hard dust-obscured GRB in a Lyman-break galaxy at z = 2.8. / Volnova, A. A.; Pozanenko, A. S.; Gorosabel, J.; Perley, D. A.; Frederiks, D. D.; Kann, D. A.; Rumyantsev, V. V.; Biryukov, V. V.; Biryukov, V. V.; Castro-Tirado, A. J.; Ferrero, P.; Golenetskii, S. V.; Klose, S.; Loznikov, V. M.; Minaev, P. Yu.; Stecklum, B.; Svinkin, D. S.; Tsvetkova, A. E.; Ugarte Postigo, Antonio de; Ulanov, M. V.
I: Royal Astronomical Society. Monthly Notices, Bind 442, Nr. 3, 11.08.2014, s. 2586-2599.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - GRB 051008
T2 - a long, spectrally hard dust-obscured GRB in a Lyman-break galaxy at z = 2.8
AU - Volnova, A. A.
AU - Pozanenko, A. S.
AU - Gorosabel, J.
AU - Perley, D. A.
AU - Frederiks, D. D.
AU - Kann, D. A.
AU - Rumyantsev, V. V.
AU - Biryukov, V. V.
AU - Biryukov, V. V.
AU - Castro-Tirado, A. J.
AU - Ferrero, P.
AU - Golenetskii, S. V.
AU - Klose, S.
AU - Loznikov, V. M.
AU - Minaev, P. Yu.
AU - Stecklum, B.
AU - Svinkin, D. S.
AU - Tsvetkova, A. E.
AU - Ugarte Postigo, Antonio de
AU - Ulanov, M. V.
PY - 2014/8/11
Y1 - 2014/8/11
N2 - 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 ∼60 M⊙ 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 of GRB 051008 is due to local absorption resulting from a dense circumburst medium.
AB - 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 ∼60 M⊙ 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 of GRB 051008 is due to local absorption resulting from a dense circumburst medium.
U2 - 10.1093/mnras/stu999
DO - 10.1093/mnras/stu999
M3 - Journal article
VL - 442
SP - 2586
EP - 2599
JO - Royal Astronomical Society. Monthly Notices
JF - Royal Astronomical Society. Monthly Notices
SN - 0035-8711
IS - 3
ER -
ID: 139977144