Jet-triggered Type Ia supernovae in radio galaxies?

被引：12
|
作者：
Capetti, A [1 ]
机构：
[1] Inst Nazl Astrofis, Osservatorio Astron Torino, I-10025 Pino Torinese, Italy
来源：
ASTROPHYSICAL JOURNAL | 2002年 / 574卷 / 01期
基金：
美国国家航空航天局;
关键词：
galaxies : active; galaxies : jets; supernovae : general;
D O I：
10.1086/342362
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We report the serendipitous discovery of a supernova (SN) in the nearby radio galaxy 3C 78. Observations obtained with the Space Telescope Imaging Spectrograph on board the Hubble Space Telescope show, at a distance of 0."54 (300 pc) from the galaxy nucleus, a second bright source, not present in previous images. As this source was fortuitously covered by the spectrograph slit, its spectrum was obtained, and it is characteristic of a Type Ia SN. This SN is closely aligned with the radio jet of 3C 78. Analysis of historical records shows that such a close association between jet and SN occurred in six of the 14 reported SNe in radio galaxies. The probability that this results from a random distribution of SNe in the host galaxy is less than similar to0.05%. We then argue that jets might trigger SN explosions.
引用
收藏
页码：L25 / L27
页数：3
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