Candidate TDE AT 2017gbl
Abstract
We discovered a very likely Tidal Disruption Event (TDE) AT 2017gbl in the luminous infrared galaxy (LIRG) IRAS 23436+5257 (ATels 10651, 10712), which are very rare events. The recent discovery of another TDE candidate in the LIRG F01004-2237 suggests that there is an enhanced rate of TDEs in LIRGs which would often be missed due to the large amounts of gas and dust. TDEs can also be extremely bright in X-rays. We observed AT 2017gbl with Swift, with no source detected and with upper limit 4*10^41 erg/s. LIRGs also host a population of X-ray binaries, and the X-ray luminosity from the host can be estimated from the IR-luminosity, at least 5*10^40 erg/s in the case of IRAS 23436+5257. By observing down to this limit, we will put strict constrains on the intrinsic luminosity of the transient, determining its nature. In addition, this would be the first direct X-ray detection of IRAS 23436+5257 and important eg. for studying the SFR-X-ray luminosity relationship in distant LIRGs.
- Publication:
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Chandra Proposal
- Pub Date:
- September 2016
- Bibcode:
- 2016cxo..prop.5268H