Events Calendar

 June 2023        
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Kate Storey-Fisher, Tools for Large-Scale Structure and Galaxy Formation (12:30 PM - 2:00 PM)

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Swapnamay Mondal, Supersymmetric black holes and Tar{T} deformation (2:00 PM - 3:00 PM)

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Chris Nagele, Supermassive black holes: where do they come from and how do they grow? (11:00 AM - 12:15 PM)

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Jose Luis Bernal, TBA (2:00 PM - 3:15 PM)

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Or Graur, Tidal Disruption Events: Hosts, Rates, and Echoes (2:00 PM - 3:00 PM)

-- Abstract: Tidal disruption events are luminous, transient flares that occur when a star strays past the tidal radius of a supermassive black hole (SMBH) and is torn apart by the SMBH's gravitational field. These transients, predicted in the 70s, are now routinely discovered in optical, wide-field surveys. However, they are rare, and only ~100 such objects have been discovered to date. In my talk, I will describe what we know about the host galaxies of these events and how they relate to their formation mechanism. I will then describe how tidal disruption events can be discovered in spectroscopic surveys, such as SDSS and DESI, by searching for high-ionization iron lines. Tidal disruption events are now only interesting as a new type of transient, they are also useful probes of SMBH/AGN physics and evolution. I will show several examples of such uses, including as an X-ray machine of the gas in the vicinity of SMBHs.

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