学术报告—Analytical and Numerical Studies of Advective Accretion Flows around Black Holes

报告摘要：

Black hole accretion is transonic in nature. Such flows can have range of angular momentum values. Low angular momentum advective flows around black holes are likely to form standing shocks during the accretion processes. The shocks possibly encounter instabilities leading to various observational signatures associated with inflows and outflows. In our work, we address a range of issues like flaring in under-luminous Sgr A* with supermassive black hole, outflow properties in super-accretors like SS 433 and ultraluminous X-ray sources with stellar-mass black holes and quasi-periodic oscillations in black hole X-ray binaries.

报告人简介：

Chandra Bahadur Singh，云南大学中国西南天文研究所副研究员, 以色列特拉维夫大学博士后（2017-2019）、巴西圣保罗大学博士后（2013-2017）、印度空间物理中心研究员（2008-2012）、印度贾达普大学物理学博士（2008-2013）、尼泊尔特里布万大学物理学硕士（2004-2007）、尼泊尔特里布万大学物理学学士（2001-2004）。 研究领域：利用半解析和数值的方法回答物质如何回落进黑洞并产生宇宙中能量最高的外流（高能天体物理、黑洞吸积和抛射现象、相对论流体动力学）。