Title: Varieties of Tidal Disruption Events

Abstract: Tidal disruption events (TDEs) are one of the most dramatic
transients in which a star is tidally disrupted by a supermassive black
hole, generating a flare luminous enough to outshine the entire host
galaxy. Approximately 100 tidal disruption event candidates have been
observed so far. In the near future, the number will grow dramatically
with detections by the ongoing and upcoming surveys (e.g., eROSITA and
LSST). The conventional picture has been that a star is fully disrupted at
the first pericenter passage and the debris circularizes rapidly, forming
a compact accretion disk. However, TDEs are more diverse and they can be
categorized into several groups depending on stellar pericenter distance,
from partial disruptions (i.e., partial mass loss and surviving remnant)
to full disruptions which is further sub-categorized depending on
relativistic effects. TDEs of each class have qualitatively different
outcomes and reveal very distinctive debris evolution, indicating
different observational features. In this talk, I will briefly explain
the physics behind TDEs and discuss the properties of the outcomes
produced in TDEs of different types and their observational implications,
based on fully relativistic hydrodynamics simulations for TDEs.

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