【学术视频】相对论天体物理学研究进展会议 | Ed Cackett of Wayne State University

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图 | Ed Cackett

题   目：Accretion disk sizes from multi-waveleng monitoring of agn

报告人：Ed Cackett

单   位：Wayne State University

时   间：2019-05-08

地   点：复旦大学

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报告提纲

• X-ray/UV/optical reverberation mapping can probe the accretion disk
• High cadence monitoring with Swift shows that lags follow wavelength dependence expected for Shakura-Sunyaev disk, but, disk sizes may be too big
• Excess lags around Balmer jump indicate BLR emits significant continuum
• X-ray are generally poorly correlated with UV/optical
• X-ray lags show no consistent pattern
• But, geometries invoked to explain this (e.g. inner torus) are at odds with Fe Kα reverberation
  

个人简介

Ed Cackett is an Associate Professor at Wayne State University. And before this, he was a postdoctral research fellow of University of Cambridge. His research interests is astrophysics of compact objects (neutron stars and black holes), more specifically:

• Accretion across the mass scale: from neutron stars and black holes in X-ray binaries to Active Galactic Nuclei (AGN)
• Observational probes of the neutron star dense matter equation of state (neutron star radii and masses)
• Reflection and reverberation in neutron star low-mass X-ray binaries
• Reverberation mapping in AGN (optical, UV and X-ray)
• Accretion disks around supermassive black holes
• Accretion at low rates and quiescent emission from neutron star low-mass X-ray binaries

会议简介

黑洞和中子星是宇宙中最极端的两种天体，也是检验基础物理的理想实验室。在过去的20年里，由于有了新一代的观测设备，对这些系统及其天体物理环境的了解有了巨大的进步。最近直接探测引力波的可能性为研究这些物体打开了一扇新窗户。在未来5-10年，我们期待出现新一代的观测设备，能提供前所未有的高质量数据，并为黑洞和中子星的研究在物理学和天体物理学方面带来新的曙光。近年来，中国非常积极地发展新项目，如eXTP等x射线任务和太极等天基引力波项目。因此，现在是海内外专家学者齐聚上海，共同开展参与相对论天体物理学研究进展会议（Recent Progress in Relativistic Astrophysics）的合适时机。主办方：复旦大学

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