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A neutron-star-driven X-ray flash associated with supernova SN 2006aj

文献类型:期刊论文

作者Mazzali, Paolo A.; Deng, Jinsong; Nomoto, Ken'ichi; Sauer, Daniel N.; Pian, Elena; Tominaga, Nozomu; Tanaka, Masaomi; Maeda, Keiichi; Filippenko, Alexei V.
刊名NATURE
出版日期2006-08-31
卷号442期号:7106页码:1018-1020
英文摘要Supernovae connected with long-duration gamma-ray bursts(1-3) (GRBs) are hyper-energetic explosions resulting from the collapse of very massive stars (similar to 40M(.), where M-. is the mass of the Sun) stripped of their outer hydrogen and helium envelopes(4-7). A very massive progenitor, collapsing to a black hole, was thought to be a requirement for the launch of a GRB(8). Here we report the results of modelling the spectra and light curve of SN 2006aj ( ref. 9), which demonstrate that the supernova had a much smaller explosion energy and ejected much less mass than the other GRB - supernovae, suggesting that it was produced by a star whose initial mass was only similar to 20 M-.. A star of this mass is expected to form a neutron star rather than a black hole when its core collapses. The smaller explosion energy of SN 2006aj is matched by the weakness and softness(10) of GRB 060218 ( an X-ray flash), and the weakness of the radio flux of the supernova(11). Our results indicate that the supernova - GRB connection extends to a much broader range of stellar masses than previously thought, possibly involving different physical mechanisms: a 'collapsar' ( ref. 8) for the more massive stars collapsing to a black hole, and magnetic activity of the nascent neutron star(12) for the less massive stars.
收录类别SCI
语种英语
WOS记录号WOS:000240142000044
源URL[http://ir.bao.ac.cn/handle/114a11/7033]  
专题国家天文台_空间科学研究部
作者单位1.Max Planck Inst Astrophys, D-85748 Garching, Germany
2.CAS, Natl Astron Observ, Beijing 100012, Peoples R China
3.Univ Tokyo, Sch Sci, Res Ctr Early Universe, Bunkyo Ku, Tokyo 1130033, Japan
4.Univ Tokyo, Sch Sci, Dept Astron, Bunkyo Ku, Tokyo 1130033, Japan
5.Osserv Astron Trieste, Ist Nazl Astrofis, I-34131 Trieste, Italy
6.Univ Calif Santa Barbara, Kavli Inst Theoret Phys, Santa Barbara, CA 93106 USA
7.Univ Tokyo, Coll Arts & Sci, Dept Earth Sci & Astron, Meguro Ku, Tokyo 1538902, Japan
8.Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA
推荐引用方式
GB/T 7714
Mazzali, Paolo A.,Deng, Jinsong,Nomoto, Ken'ichi,et al. A neutron-star-driven X-ray flash associated with supernova SN 2006aj[J]. NATURE,2006,442(7106):1018-1020.
APA Mazzali, Paolo A..,Deng, Jinsong.,Nomoto, Ken'ichi.,Sauer, Daniel N..,Pian, Elena.,...&Filippenko, Alexei V..(2006).A neutron-star-driven X-ray flash associated with supernova SN 2006aj.NATURE,442(7106),1018-1020.
MLA Mazzali, Paolo A.,et al."A neutron-star-driven X-ray flash associated with supernova SN 2006aj".NATURE 442.7106(2006):1018-1020.

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来源:国家天文台

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