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GRB 051008 : a long , spectrally hard dust-obscured GRB in a Lyman-break galaxy at z ≈ 2
| Content Provider | Semantic Scholar |
|---|---|
| Author | Volnova, Alina Gorosabel, Javier Perley, D. A. Kann, David Alexander Rumyantsev, Valentin Vitalievich Ferrero, Patrizia Klose, Sylvio Minaev, Pavel Stecklum, Bringfried Tsvetkova, Alexandra Postigo, Antonio De Ugarte Ulanov, Mihail |
| Copyright Year | 2014 |
| 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 gammaand 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. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://authors.library.caltech.edu/49062/1/MNRAS-2014-Volnova-2586-99.pdf |
| Alternate Webpage(s) | http://authors.library.caltech.edu/49062/7/1405.4139v1.pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | A* search algorithm Active galactic nucleus Anteroventral Thalamic Nucleus Bands Batch file DNA Breaks, Double-Stranded GUCY2C protein, human GZMB wt Allele Location-based game MAG (cryptography) Radiation Redshift Swift (programming language) Telescopes |
| Content Type | Text |
| Resource Type | Article |
