SIMBAD references

2014ApJ...781...59D - Astrophys. J., 781, 59 (2014/February-1)

A tidal disruption event in a nearby galaxy hosting an intermediate mass black hole.

DONATO D., CENKO S.B., COVINO S., TROJA E., PURSIMO T., CHEUNG C.C., FOX O., KUTYREV A., CAMPANA S., FUGAZZA D., LANDT H. and BUTLER N.R.

Abstract (from CDS):

We report the serendipitous discovery of a bright point source flare in the Abell cluster A1795 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 yr, 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 (∼106 K). The flare is spatially coincident with the nuclear region of a faint, inactive galaxy with a photometric redshift consistent at the 1σ 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 (BH) with log (MBH/M) ∼ 5.5±0.5. If so, such a discovery indicates that tidal disruption flares may be used to probe BHs in the intermediate mass range, which are very difficult to study by other means.

Abstract Copyright:

Journal keyword(s): galaxies: clusters: individual: A1795 - galaxies: general - galaxies: nuclei - X-rays: galaxies

Simbad objects: 16

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2014ApJ...781...59D and select 'bookmark this link' or equivalent in the popup menu


2020.02.19-08:09:07

© Université de Strasbourg/CNRS

    • Contact