Astronomical Institute Anton Pannekoek, University of Amsterdam, Amsterdam, The Netherlands.
Proc Natl Acad Sci U S A. 2010 Apr 20;107(16):7196-201. doi: 10.1073/pnas.0914070107. Epub 2010 Apr 5.
Before the launch of Chandra, our Galactic Center supermassive black hole, Sgr A*, had never been positively identified outside the radio bands. A great deal has changed in the past decade, starting with the discovery that our own backyard harbors a very weak, yet clearly active, galactic nucleus. I will review how this revelation has been a boon for accretion studies around black holes in general and has helped us place our own Galaxy in context within the active galactic nuclei (AGN) zoology. Chandra's exquisite resolution has also unveiled entirely new populations of faint sources and transients, as well as regions of extreme gas dynamics and hints of prior, more typical AGN-like activity in our Galactic Center.
在钱德拉发射之前,我们的银河系中心超大质量黑洞 Sgr A* 在无线电波段之外从未被明确识别过。在过去的十年中,情况发生了很大的变化,首先是发现我们自己的后院存在一个非常微弱但显然活跃的星系核。我将回顾这一发现是如何对黑洞吸积研究带来好处的,以及如何帮助我们将自己的星系置于活动星系核 (AGN) 动物群的背景中。钱德拉的高分辨率还揭示了全新的微弱源和瞬变源群体,以及极端气体动力学区域,并暗示了我们银河系中心以前更典型的 AGN 样活动。