%0 Generic %1 donato2013tidal %A Donato, Davide %A Cenko, Stephen Bradley %A Covino, Stefano %A Troja, Eleonora %A Pursimo, Tapio %A Cheung, Chi C. %A Fox, Ori D. %A Kutyrev, Alexander S. %A Campana, Sergio %A Fugazza, Dino %A Landt, Hermine %A Butler, Nathaniel R. %D 2013 %K blackhole event star tidal %T A Tidal Disruption Event in a Nearby Galaxy Hosting an Intermediate Mass Black Hole %U http://arxiv.org/abs/1311.6162 %X We report the serendipitous discovery of a bright point source flare in the Abell cluster 1795 with archival EUVE and Chandra observations. Assuming the EUVE emission is associated with the Chandra source, the X-ray 0.5-7 keV flux declined by a factor of ~2300 over a time span of 6 years, following a power-law decay with index ~2.44+-0.40. The Chandra data alone vary by a factor of ~20. The spectrum is well fit by a blackbody with a constant temperature of kT~0.09 keV (~10^6 K). The flare is spatially coincident with the nuclear region of a faint, inactive galaxy with a photometric redshift consistent at the one sigma level with the cluster (z=0.062476). We argue that these properties are indicative of a tidal disruption of a star by a black hole with log(M_BH/M_sun)~5.5+-0.5. If so, such a discovery indicates that tidal disruption flares may be used to probe black holes in the intermediate mass range, which are very difficult to study by other means.

@misc{donato2013tidal, abstract = {We report the serendipitous discovery of a bright point source flare in the Abell cluster 1795 with archival EUVE and Chandra observations. Assuming the EUVE emission is associated with the Chandra source, the X-ray 0.5-7 keV flux declined by a factor of ~2300 over a time span of 6 years, following a power-law decay with index ~2.44+-0.40. The Chandra data alone vary by a factor of ~20. The spectrum is well fit by a blackbody with a constant temperature of kT~0.09 keV (~10^6 K). The flare is spatially coincident with the nuclear region of a faint, inactive galaxy with a photometric redshift consistent at the one sigma level with the cluster (z=0.062476). We argue that these properties are indicative of a tidal disruption of a star by a black hole with log(M_BH/M_sun)~5.5+-0.5. If so, such a discovery indicates that tidal disruption flares may be used to probe black holes in the intermediate mass range, which are very difficult to study by other means.}, added-at = {2013-11-26T18:45:49.000+0100}, author = {Donato, Davide and Cenko, Stephen Bradley and Covino, Stefano and Troja, Eleonora and Pursimo, Tapio and Cheung, Chi C. and Fox, Ori D. and Kutyrev, Alexander S. and Campana, Sergio and Fugazza, Dino and Landt, Hermine and Butler, Nathaniel R.}, biburl = {https://www.bibsonomy.org/bibtex/2625425c97024d959f55e38c1c87de1bd/miki}, description = {[1311.6162] A Tidal Disruption Event in a Nearby Galaxy Hosting an Intermediate Mass Black Hole}, interhash = {eb6daf3a9ce7aae5ddaa7e83373b59dc}, intrahash = {625425c97024d959f55e38c1c87de1bd}, keywords = {blackhole event star tidal}, note = {cite arxiv:1311.6162Comment: 51 pages (single column), 4 figures; Accepted for publication in ApJ}, timestamp = {2013-11-26T18:45:49.000+0100}, title = {A Tidal Disruption Event in a Nearby Galaxy Hosting an Intermediate Mass Black Hole}, url = {http://arxiv.org/abs/1311.6162}, year = 2013 }