Science News：
報告人：戴志軍
Journal Club Public Talk：
報告人：牛書(shū)
報告題目：The Soft State Of Cygnus X-1 Observed With Nustar
報告摘要：Cygnus X-1 is the most-known and widely studied black hole source. On this talk, I will present the latest observation data about a multi-epoch hard X-ray analysis of Cygnus X-1 in its soft state based on four observations with the Nuclear Spectroscopic Telescope Array. The result confirms the previous work about the black hole spin, the iron abundance, the misalignment between the inner disk. Furthermore, the author finds the absorption from ionized iron in the focused stellar wind from the supergiant companion star.
參考文獻：Walton D. J., Tomsick J. A., Madsen K. K., et al., 2016, ApJ, 826, 87
時(shí)間：2016年11月15日 12:15 － 1:45pm
地點(diǎn): 紫臺619會(huì )議室