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CCAPP Seminar: Yuhan Yao (Caltech)

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October 25, 2022
12:00AM - 1:00PM
PRB 4138

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Add to Calendar 2022-10-25 00:00:00 2022-10-25 13:00:00 CCAPP Seminar: Yuhan Yao (Caltech) Speaker: Yuhan Yao The X-ray Bright Tidal Disruption Event AT2021ehb Tidal disruption events (TDEs) provide ideal laboratories to study the real-time formation of an accretion disk around a massive black hole and the subsequent disk evolution. Over the past few years, time domain sky surveys such as the optical Zwicky Transient Facility and the Spektrum-Roentgen-Gamma X-ray satellite have led to a resurgence of TDE discoveries. In this talk, I will highlight how detailed multi-wavelength studies of the nearby TDE AT2021ehb have helped us understand super-Eddington accretion. Our joint NICER+NuSTAR observations show X-ray spectral features characteristic of relativistic disk reflection for the first time in a non-jetted TDE. I will end by describing new opportunities of TDE studies offered by upcoming time domain experiments throughout the electromagnetic spectrum. PRB 4138 Center for Cosmology and AstroParticle Physics (CCAPP) ccapp@osu.edu America/New_York public

Speaker: Yuhan Yao

The X-ray Bright Tidal Disruption Event AT2021ehb

Tidal disruption events (TDEs) provide ideal laboratories to study the real-time formation of an accretion disk around a massive black hole and the subsequent disk evolution. Over the past few years, time domain sky surveys such as the optical Zwicky Transient Facility and the Spektrum-Roentgen-Gamma X-ray satellite have led to a resurgence of TDE discoveries. In this talk, I will highlight how detailed multi-wavelength studies of the nearby TDE AT2021ehb have helped us understand super-Eddington accretion. Our joint NICER+NuSTAR observations show X-ray spectral features characteristic of relativistic disk reflection for the first time in a non-jetted TDE. I will end by describing new opportunities of TDE studies offered by upcoming time domain experiments throughout the electromagnetic spectrum.

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