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Searching for a pair of accreting supermassive black holes in J1425+3231

Published online by Cambridge University Press:  23 June 2017

K. É. Gabányi ,
S. Frey Open the ORCID record for S. Frey [Opens in a new window] ,
Z. Paragi ,
T. An  and
S. Komossa
K. É. Gabányi
Affiliation:
FÖMI, Satellite Geodetic Observatory, P.O. Box 585, 1592 Budapest, Hungary email: [email protected] Konkoly Observatory, MTA CsFK, P.O. Box 67, 1525 Budapest, Hungary
S. Frey
Affiliation:
FÖMI, Satellite Geodetic Observatory, P.O. Box 585, 1592 Budapest, Hungary email: [email protected] Konkoly Observatory, MTA CsFK, P.O. Box 67, 1525 Budapest, Hungary
Z. Paragi
Affiliation:
Joint Institute for VLBI ERIC, Postbus 2, 7990 AA Dwingeloo, the Netherlands
T. An
Affiliation:
Shanghai Astronomical Observatory, CAS, 80 Nandan Road, 200030 Shanghai, P.R. China
S. Komossa
Affiliation:
QianNan Normal University for Nationalities, Longshan Street, Duyun City of Guizhou Province, P.R. China
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Abstract

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In hierarchical structure formation scenarios, merging galaxies are expected to be seen in different phases of their coalescence. Simulations suggest that simultaneous activity of the supermassive black holes (SMBHs) in the centres of the merging galaxies may be expected at kpc-scale separations. Currently, there are no direct observational methods which allow the selection of a large number of such dual active galactic nuclei (AGN) candidates. SDSS J142507.32+323137.4 was reported as a promising candidate source based on its optical spectrum. Here we report on our sensitive e-MERLIN observations performed at 1.6 and at 5 GHz, which show that the optical spectrum of the source can be more straightforwardly explained with jet–cloud interactions instead of the dual AGN scenario.

Keywords

galaxies: activequasars: individual: SDSS J142507.32+323137.4radio continuum: galaxiestechniques: interferometric
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S324: New Frontiers in Black Hole Astrophysics , September 2016 , pp. 223 - 226
Copyright
Copyright © International Astronomical Union 2017 

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