%0 Generic %1 Saxton2012 %A Saxton, R. D. %A Read, A. M. %A Esquej, P. %A Komossa, S. %A Dougherty, S. %A Rodriguez-Pascual, P. %A Barrado, D. %D 2012 %K blackhole tidaldisruption %T A tidal disruption-like X-ray flare from the quiescent galaxy SDSS J120136.02+300305.5 %U http://arxiv.org/abs/1202.5900 %X SDSS J120136.02+300305.5 was detected in an XMM-Newton slew from June 2010 with a flux 56 times higher than an upper limit from ROSAT, corresponding to Lx~3x10^44 ergs/s. It has the optical spectrum of a quiescent galaxy (z=0.146). Overall the X-ray flux has evolved consistently with the canonical t^-5/3 model, expected for returning stellar debris from a tidal disruption event, fading by a factor ~300 over 300 days. In detail the source is very variable and became invisible to Swift between 27 and 48 days after discovery, perhaps due to self-absorption. The X-ray spectrum is soft but is not the expected tail of optically thick thermal emission. It may be fit with a Bremsstrahlung or double-power-law model and is seen to soften with time and declining flux. Optical spectra taken 12 days and 11 months after discovery indicate a deficit of material in the broad line and coronal line regions of this galaxy, while a deep radio non-detection implies that a jet was not launched during this event.

@misc{Saxton2012, abstract = { SDSS J120136.02+300305.5 was detected in an XMM-Newton slew from June 2010 with a flux 56 times higher than an upper limit from ROSAT, corresponding to Lx~3x10^44 ergs/s. It has the optical spectrum of a quiescent galaxy (z=0.146). Overall the X-ray flux has evolved consistently with the canonical t^-5/3 model, expected for returning stellar debris from a tidal disruption event, fading by a factor ~300 over 300 days. In detail the source is very variable and became invisible to Swift between 27 and 48 days after discovery, perhaps due to self-absorption. The X-ray spectrum is soft but is not the expected tail of optically thick thermal emission. It may be fit with a Bremsstrahlung or double-power-law model and is seen to soften with time and declining flux. Optical spectra taken 12 days and 11 months after discovery indicate a deficit of material in the broad line and coronal line regions of this galaxy, while a deep radio non-detection implies that a jet was not launched during this event. }, added-at = {2012-03-01T10:42:48.000+0100}, author = {Saxton, R. D. and Read, A. M. and Esquej, P. and Komossa, S. and Dougherty, S. and Rodriguez-Pascual, P. and Barrado, D.}, biburl = {https://www.bibsonomy.org/bibtex/2d64fcf775c244e0957617883d0b66b87/yfyuan}, description = {A tidal disruption-like X-ray flare from the quiescent galaxy SDSS J120136.02+300305.5}, interhash = {b88be8bd177fc730f85807d36ed528a2}, intrahash = {d64fcf775c244e0957617883d0b66b87}, keywords = {blackhole tidaldisruption}, note = {cite arxiv:1202.5900Comment: Accepted for publication in Astronomy and Astrophysics. 11 pages, 11 figures}, timestamp = {2012-03-01T10:42:48.000+0100}, title = {A tidal disruption-like X-ray flare from the quiescent galaxy SDSS J120136.02+300305.5}, url = {http://arxiv.org/abs/1202.5900}, year = 2012 }