Discovery of Tidal Disruption Flares with GALEX

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

We present Ultraviolet flares from the tidal disruption of stars by supermassive black holes discovered with the GALEX Deep Imaging Survey. We select tidal disruption event candidates from Ultraviolet flares that have multiwavelength corollary data that identify their hosts as inactive galaxies. We obtain optical spectra of these candidates to rule out flares from galaxies which show any signs of Seyfert activity in their nuclei, and follow up our best candidates with Chandra X-ray imaging. For the first time, we also detect one of the confirmed tidal disruption flares in the optical with the excellent temporal sampling of the CFHT Legacy Survey. We will discuss the important implications this has for the capability of the next generation of optical synoptic surveys such as Pan-STARRS and LSST to detect these events. We will also compare the luminosity, temperature, decay, and rate of our observed tidal disruption flares to the theoretical predictions.

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