【学术报告】
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报告题目：Supersoft AGNs: signature of super Eddington accretion, IMBH, TDE or new AGN spectral state?

报告人: 舒新文 教授

报告人单位：安徽师范大学物理系

报告时间：2017年4月17日（周一）下午 3:00-4:00

报告地点：小学校会议室

报告语言：中文

报告摘要： 

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.

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南方天文观测基地

中国科学院天体结构与演化重点实验室

云南天文台学术委员会

邀请人：董小波 联系电话: 13320511909

4月10日