Abstract Details
| Name: RUBINUR KHATUN Affiliation: Indian Institute of Astrophysics Conference ID: ASI2016_690 Title : Radio Observations of Candidate Dual Active Galactic Nuclei in Double Peaked Emission Line Galaxies Authors and Co-Authors : Mousumi Das Preeti Kharb Indian Institute of Astrophysics, Bangalore Abstract Type : Oral Abstract Category : Extragalactic astronomy Abstract : We present results from arcsecond-scale radio observations with the Expanded Very large Array (EVLA) of eight galaxies classified as double peaked emission line active galactic nuclei(DPAGN). Our main aim is to distinguish between dual AGN and jets or disks in these DPAGN. Dual AGN or supermassive black hole (SMBH) binaries are expected to form during galaxy mergers and minor accretion events. When the SMBHs are accreting, they become dual AGN. Double peaked emission lines can indicate the presence of two AGN, but can also be due to powerful bipolar jets or outflows or rotating nuclear disks. High resolution radio or X-ray observations are the best way to confirm the presence of binary AGNs. In our 6 GHz observation of the nuclei of eight DPAGN galaxies, we have detected two double core sources that appear to be dual AGN and four extended sources that are possibly radio jets associated with compact cores. The remaining two galaxies are single compact cores. We have used archival data at higher frequencies to do follow-up studies of one of the double core galaxies. Our results suggest that high resolution, multi-frequency radio observations are essential to detect dual SMBHs in our low redshift Universe. |