THE HIGHLY ENERGETIC EXPANSION OF SN 2010bh ASSOCIATED WITH GRB 100316D
文献类型：期刊论文
| 作者 | Bufano, Filomena1,2; Pian, Elena3,4,5; Sollerman, Jesper6; Benetti, Stefano7; Pignata, Giuliano2; Valenti, Stefano7; Covino, Stefano8; D'Avanzo, Paolo8; Malesani, Daniele9; Cappellaro, Enrico7 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2012-07-01 |
| 卷号 | 753期号:1 |
| 关键词 | supernovae: general supernovae: individual (SN 2010bh, GRB 100316D) |
| 英文摘要 | We present the spectroscopic and photometric evolution of the nearby (z = 0.059) spectroscopically confirmed Type Ic supernova, SN 2010bh, associated with the soft, long-duration gamma-ray burst (X-ray flash) GRB 100316D. Intensive follow-up observations of SN 2010bh were performed at the ESO Very Large Telescope (VLT) using the X-shooter and FORS2 instruments. Thanks to the detailed temporal coverage and the extended wavelength range (3000-24800 angstrom), we obtained an unprecedentedly rich spectral sequence among the hypernovae, making SN 2010bh one of the best studied representatives of this SN class. We find that SN 2010bh has a more rapid rise to maximum brightness (8.0 +/- 1.0 rest-frame days) and a fainter absolute peak luminosity (L-bol approximate to 3 x 10(42) erg s(-1)) than previously observed SN events associated with GRBs. Our estimate of the ejected Ni-56 mass is 0.12 +/- 0.02 M-circle dot. From the broad spectral features, we measure expansion velocities up to 47,000 km s(-1), higher than those of SNe 1998bw (GRB 980425) and 2006aj (GRB 060218). Helium absorption lines He I lambda 5876 and He I 1.083 mu m, blueshifted by similar to 20,000-30,000 km s(-1) and similar to 28,000-38,000 km s(-1), respectively, may be present in the optical spectra. However, the lack of coverage of the He I 2.058 mu m line prevents us from confirming such identifications. The nebular spectrum, taken at similar to 186 days after the explosion, shows a broad but faint [O I] emission at 6340 angstrom. The light curve shape and photospheric expansion velocities of SN 2010bh suggest that we witnessed a highly energetic explosion with a small ejected mass (E-k approximate to 10(52) erg and M-ej approximate to 3 M-circle dot). The observed properties of SN 2010bh further extend the heterogeneity of the class of GRB SNe. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000305632500067 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6199]  |
| 专题 | 国家天文台_空间科学研究部 |
| 作者单位 | 1.INAF Osservatorio Astron Catania, I-95123 Catania, Italy 2.Univ Andres Bello, Dept Ciencias Fis, Santiago, Chile 3.INAF Osservatorio Astron Trieste, I-34143 Trieste, Italy 4.Scuola Normale Super Pisa, I-56126 Pisa, Italy 5.INFN Sez Pisa, I-56127 Pisa, Italy 6.AlbaNova, Dept Astron, Oskar Klein Ctr, SE-10691 Stockholm, Sweden 7.INAF Osservatorio Astron Padova, I-35122 Padua, Italy 8.INAF Osservatorio Astron Brera, I-23807 Merate, Italy 9.Univ Copenhagen, Niels Bohr Inst, Dark Cosmol Ctr, DK-2100 Copenhagen, Denmark 10.INAF Osservatorio Astron Capodimonte, I-8013 Naples, Italy |
| 推荐引用方式 GB/T 7714 | Bufano, Filomena,Pian, Elena,Sollerman, Jesper,et al. THE HIGHLY ENERGETIC EXPANSION OF SN 2010bh ASSOCIATED WITH GRB 100316D[J]. ASTROPHYSICAL JOURNAL,2012,753(1). |
| APA | Bufano, Filomena.,Pian, Elena.,Sollerman, Jesper.,Benetti, Stefano.,Pignata, Giuliano.,...&Wijers, Ralph A. M. J..(2012).THE HIGHLY ENERGETIC EXPANSION OF SN 2010bh ASSOCIATED WITH GRB 100316D.ASTROPHYSICAL JOURNAL,753(1). |
| MLA | Bufano, Filomena,et al."THE HIGHLY ENERGETIC EXPANSION OF SN 2010bh ASSOCIATED WITH GRB 100316D".ASTROPHYSICAL JOURNAL 753.1(2012). |
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来源：国家天文台
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