Twin SMBH candidates in the BCG of RBS 797
Journal
Date Issued
2015
Abstract
The radio-loud BCG at the center of the cool core cluster RBS 797 is known to exhibit a misalignment of its 5 GHz radio emission observed at different VLA resolutions, with the innermost kpc-scale jets being almost orthogonal to the radio lobes which extends for tens of kpc filling the X-ray cavities seen by Chandra. The different radio directions may be caused by rapid jet reorientation due to interaction with a secondary supermassive black hole (SMBH), or to the presence of two AGN, probably in a merging phase, which are emitting radio jets in different directions. We present the results of new 5 GHz observations performed with the EVN in May 2013. In particular, we detected two compact radio components, with a projected separation of 77 pc. We discuss two possible scenarios for the origin and nature of the EVN double source, showing that both interpretations are consistent with the presence of a SMBH binary system in the BCG of RBS 797....
Coverage
12th European VLBI Network Symposium and Users Meeting - EVN 2014
Volume
230
Conferenece
12th European VLBI Network Symposium and Users Meeting - EVN 2014
Conferenece place
Cagliari, Italy
Conferenece date
7-10 October, 2014
Issn Identifier
1824-8039
Ads BibCode
2015arXiv150402681G
Rights
open.access
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