学术报告:AGN variability - a powerful tool to probe and test AGN structures in the era of time domain astronomy

发布时间:2017-05-22 南师物理学院 浏览次数:

报告人:蔡振翼
时间:5月31号,15:00
地点:行健楼437
 
题目:AGN variability - a powerful tool to probe and test AGN structures in the era of time domain astronomy
 
摘要:I will briefly overview the main observational properties of AGN variability, including the (timescale-dependent) bluer-when-brighter trend in UV/optical. This newly discovered timescale-dependent behavior directly rules out the host contamination as well as the change of global accretion rate as the primary contribution to the UV/optical variability, but is naturally favored by the thermally inhomogeneous accretion disk scenario. Furthermore, this inhomogeneous accretion disk model has been tentatively developed to be able to produce the UV/optical continuum lag in AGN without light echoing (or X-ray reprocessing scenario).
 
简介:蔡振翼,中国科学技术大学天文系特任副研究员。2003年至2014年厦门大学本硕博学生,获理论物理博士学位。期间,2009年至2013年为厦门大学与意大利高等研究院(SISSA)联合培养研究生,获天体物理博士学位。2014年至2016年在中国科学技术大学天文系做博士后,2016年10月被聘任为特任副研究员。主要从事星系形成和演化,活动星系核光变等方面的研究工作。得到“国家自然科学基金青年项目”和“中国博士后科学基金面上项目”等基金支持。发表文章可参见:
http://adsabs.harvard.edu/cgi-bin/nph-abs_connect?library&libname=Zhen-Yi+Cai&libid=4c7e70d3f9