时间：今天上午10:00

　　地点：报告厅406

　　报告人：舒新文（安徽师范大学物理系）

　　主持人：谭颖

　　题目：Supersoft AGNs: signature of super Eddington accretion, IMBH, TDE or new AGN spectral state?

　　摘要：Supersoft AGNs are a new class of AGNs which lack significant hard X-ray emission above ~2 keV. They may host intermediate mass black holes (IMBH) accreting in a poorly explored regime of parameter space, such as super Eddingtong accretion and extreme coronal condition. Their X-ray spectra are dominated by a soft thermal component, a form similar to disk blackbody emission in stellar-mass BHs in their high/soft state. Though only three supersoft AGNs are reported to date, they show distinct X-ray variability behavior, some of them could be associated with TDE.

　　In this talk, I will present the multi-wavelength characteristics of RX J1301.9+2746, the most distinct source of this kind. In particular, I will show our follow-up JVLA observations which reveal fast intraday radio variability, confining its origin likely from a compact jet. Such the unexpected presence of jets in a supersoft AGN challenges canonical theories of jet formation. All the results suggest that this AGN is an ideal laboratory for studying the universality of accretion/ejection coupling in BH accreting systems.

　　个人简介：

　　2010年博士毕业于中国科技大学，2010.6-2013.6，中国科技大学博士后、副研究员。

　　2013.6-2015.3 法国原子能中心（CEA）博士后，2015.3-至今 安徽师范大学教授。主要从事

　　AGN和高红移星系的研究，已发表论文50余篇（第一／通讯作者12篇，大多为ApJ），

　　被同行引用1200余次。