Please use this identifier to cite or link to this item: http://hdl.handle.net/2248/7252
Title: Searching for dual active galactic nuclei
Authors: Rubinur, K
Mousumi Das
Kharb, P
Keywords: Galaxy merger;Dual AGN;Radio observations
Issue Date: Feb-2018
Publisher: Indian Academy of Sciences
Citation: Journal of Astrophysics and Astronomy, Vol. 39, No. 1, 8
Abstract: Binary or dual active galactic nuclei (DAGN) are expected from galaxy formation theories. However, confirmed DAGN are rare and finding these systems has proved to be challenging. Recent systematic searches for DAGN using double-peaked emission lines have yielded several new detections, as have the studies of samples of merging galaxies. In this paper, we present an updated list of DAGN compiled from published data. We also present preliminary results from our ongoing Expanded Very Large Array (EVLA) radio study of eight double-peaked emission-line AGN (DPAGN). One of the sample galaxy shows an S-shaped radio jet. Using new and archival data, we have successfully fitted a precessing jet model to this radio source. We find that the jet precession could be due to a binary AGN with a super-massive black-hole (SMBH) separation of ∼ 0.02 pc or a single AGN with a tilted accretion disk. We have found that another sample galaxy, which is undergoing a merger, has two radio cores with a projected separation of 5.6 kpc. We discuss the preliminary results from our radio study.
Description: Open Access
URI: http://hdl.handle.net/2248/7252
ISSN: 0250-6335
???metadata.dc.rights???: © Indian Academy of Sciences
???metadata.dc.relation.uri???: http://www.ias.ac.in/describe/article/joaa/039/01/0008
https://doi.org/10.1007/s12036-018-9512-y
Appears in Collections:IIAP Publications

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