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

页码：L25 / L27

页数：3

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