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BHI Colloquium

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  • 2019 Nov 26

    BHI Colloquium

    1:30pm to 2:30pm

    Location: 

    BHI Meeting Room

    Wlodek Kluzniak (University of Warsaw)

    Title: Diskoseismic modes in radiative general-relativistic hydrodynamical simulations of thin disks

    Abstract: High frequency quasiperiodic variability in accreting black hole sources is thought to reflect the underlying space-time metric. A detailed analytic theory of normal modes of thin disks has been worked out and can be found in books (e.g., Kato 2016) and review papers (e.g., Wagoner 2008). Other mechanisms, such as resonance resulting in a 3:2 ratio of...

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  • 2019 Dec 03

    BHI Colloquium

    1:30pm

    Location: 

    BHI Meeting Room

    Xiaohui Fan (University of Arizona)

    Title: The First Luminous Quasars

    Abstract: I will describe the ongoing surveys to discover luminous quasars at the highest redshift. These surveys allow the first measurements of quasar luminosity function at the epoch of reionization, and predict the redshift at which we will find the earliest luminous quasars powered by billion solar mass black holes in the observable universe. I will also update the effort to measure black hole mass function in quasars at the...

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