Soderberg 2008 XRF 080109/SN 2008D 的X射线和射电观测
主要内容:
数据很全很详细。
投了Nature。
精彩摘抄:
X-ray
radio
文章信息: An Extremely Luminous X-ray Outburst Marking the Birth of a Normal Supernova
(Submitted on 13 Feb 2008)
Abstract: The most massive stars in the universe end their lives in luminous supernova explosions that lead to the formation of neutron stars and black holes and impact star formation and galaxy evolution. For nearly a century, supernovae have been discovered solely through their bright optical emission, delaying initial observations to several days after the explosion. As a result, the details of the core collapse explosion mechanism, as well as the nature of some supernova progenitors, remain a matter of intense debate. Here we report our serendipitous discovery of a normal type Ibc supernova at the time of explosion, marked by an extremely luminous X-ray outburst. We interpret the outburst as the break-out of the supernova shock through a dense wind surrounding the compact (radius of ~10^11 cm) progenitor star. This conclusion is supported by our extensive radio and ultraviolet/optical observations from 0.1 to 30 days post-explosion. Equally important, the inferred rate of X-ray outbursts agrees with the core-collapse supernova rate, leading to the exciting conclusion that future wide-area X-ray surveys will uncover hundreds of supernovae per year at the time of explosion, and thereby enable crucial neutrino and gravitational wave detections that may ultimately unravel the explosion mechanism.
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