在恒星形成星系M82中发现一个不寻常的新射电源：微弱的超新星，超大质量黑洞，还是河外微类星体？
Discovery of an unusual new radio source in the star-forming galaxy M82: Faint supernova, supermassive blackhole, or an extra-galactic microquasar?
摘要：
利用MERLIN射电观测系统，在星暴星系M82的核区域探测到一个微弱的新射电源，该观测系统旨在监测最近明亮的超新星SN 2008iz的通量密度演化。这个新的来源最初是在2009年5月1日至5日的观测中发现的，但在一周前的观测中或之前对M82的任何观测中都没有发现。在本文中，我们报告了这个新来源的发现和监测其存在的前9个月的演变。这个新来源的真实性质仍然不清楚，我们讨论这个来源是否可能是一个不寻常的和微弱的超新星，一个与M82核有关的超大质量黑洞，或者有趣的是，第一次探测到来自河外微类星体的无线电发射。
英文摘要：
A faint new radio source has been detected in the nuclear region of the starburst galaxy M82 using MERLIN radio observations designed to monitor the flux density evolution of the recent bright supernova SN2008iz. This new source was initially identified in observations made between 1-5th May 2009 but had not been present in observations made one week earlier, or in any previous observations of M82. In this paper we report the discovery of this new source and monitoring of its evolution over its first 9 months of existence. The true nature of this new source remains unclear, and we discuss whether this source may be an unusual and faint supernova, a supermassive blackhole associated with the nucleus of M82, or intriguingly the first detection of radio emission from an extragalactic microquasar.
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