The Impact of Tidal Disruption Events on Galactic Habitability
  Tidal Disruption Events (TDEs) are characterized by the emission of a short
burst of high-energy radiation. We analyze the cumulative impact of TDEs on
galactic habitability using the Milky Way as a proxy. We show that X-rays and
extreme ultraviolet (XUV) radiation emitted during TDEs can cause hydrodynamic
escape and instigate biological damage. By taking the appropriate variables
into consideration, such as the efficiency of atmospheric escape and distance
from the Galactic center, we demonstrate that the impact of TDEs on galactic
habitability is comparable to that of Active Galactic Nuclei. In particular, we
show that planets within distances of $\sim 0.1$-$1$ kpc could lose Earth-like
atmospheres over the age of the Earth, and that some of them might be subject
to biological damage once every $\gtrsim 10^4$ yrs. We conclude by highlighting
potential ramifications of TDEs and argue that they should be factored into
future analyses of inner galactic habitability.
