Large decay of X-ray flux in 2XMM J123103.2+110648: evidence for a tidal disruption event
Large decay of X-ray flux in 2XMM J123103.2+110648: evidence for a tidal disruption event
The X-ray source 2XMM J123103.2+110648 was previously found to show pure thermal X-ray spectra and a ~3.8 hr periodicity in three XMM-Newton X-ray observations in 2003-2005, and the optical spectrum of the host galaxy suggested it as a type 2 active galactic nucleus candidate. We have obtained new X-ray observations …