Supermassive Black Holes in Galactic Nuclei

9313620 Paczynski 这项研究将致力于对活跃（AGN）和不活跃（IGN）星系核中超大质量黑洞特征的理论研究。 尽管经过数十年的巨大努力，仍然没有确凿的证据证明超大质量黑洞的存在，尽管很少有天体物理学家怀疑它们的存在。 关于活动星系核的工作将集中于“爱因斯坦十字”和“三叶草”周围选定的一组四重宏观透镜类星体的光学和 X 射线发射的引力微透镜效应的各种影响。 引力微透镜提供了在现有结构的最小尺度上研究源结构的可能性，一直到黑洞的史瓦西半径。 主要目标是找到一种方法来证明或反驳活动星系核中超大质量黑洞的存在，方法是找出源中存在的最精细空间结构对观测到的亮度变化可能产生的影响，以及如何检测由被超大质量黑洞扰乱的恒星形成的厚吸积盘是否存在。 主要目标是确定是否存在恒星分裂和吸积的证据可以作为支持或反对 IGN 中超大质量黑洞存在的证据。 首席研究员被认为是一位杰出的理论天体物理学家。 ***

9313620 Paczynski This research will be devoted to a theoretical search for signatures of supermassive black holes in active (AGN) and inactive (IGN) galactic nuclei. In spite of decades of considerable effort no firm proof is available for the presence of supermassive black holes though very few astrophysicists doubt their existence. The work on AGNs will concentrate on various effects of gravitational microlensing of the optical and X-ray emission from the select group of quadruply macro-lensed quasars, line the "Einstein cross" and the "clover leaf." Gravitational microlensing offers a possibility to study the source structure on the smallest scale the structure exists, all the way down to the Schwarzschield radius of a black hole. The primary goal will be to find a way to prove or disprove the presence of supermassive black holes in AGNs by finding what effects the finest space structure present in the source may have on the observed brightness variability, and how to detect the presence or absence of thick accretion disks formed from stars disrupted by the supermassive black holes. The primary goal will be to find if the presence or absence of evidence for star disruption and accretion can be used as evidence for or against the presence of supermassive black holes in IGNs. The Principal Investigator is regarded as an outstanding theoretical astrophysicist. ***