1. BAT AGN Spectroscopic Survey -- XV: The High Frequency Radio Cores of Ultra-hard X-ray Selected AGN
- Author
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Benny Trakhtenbrot, Fiona A. Harrison, O. Ivy Wong, J. Mejia-Restrepo, Franz E. Bauer, Junhyun Baek, Krista Lynne Smith, Claudio Ricci, C. Meg Urry, Richard F. Mushotzky, Stuart N. Vogel, Meredith Powell, Federica Ricci, Kyuseok Oh, Aeree Chung, Daniel Stern, Michael Koss, Lynne Smith, Krista, F Mushotzky, Richard, Koss, Michael, Trakhtenbrot, Benny, Ricci, Claudio, Ivy Wong, O, E Bauer, Franz, Ricci, Federica, Vogel, Stuart, Stern, Daniel, C Powell, Meredith, Meg Urry, C, Harrison, Fiona, Mejia-Restrepo, Julian, Oh, Kyuseok, Baek, Junhyun, Chung, Aeree, Smith K.L., Mushotzky R., Koss M., Trakhtenbrot B., Ricci C., Wong I., Bauer F., Ricci F, Vogel S., Stern D., Powell M., Urry M., Harrison F., Mejia-Restrepo J., Oh K., Baek J., and Chung A. more...
- Subjects
Astrophysics::High Energy Astrophysical Phenomena ,galaxies: active ,nuclei [galaxies] ,FOS: Physical sciences ,Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,High frequency ,01 natural sciences ,Seyfert [galaxies] ,0103 physical sciences ,Astrophysics::Solar and Stellar Astrophysics ,Spectroscopy ,010303 astronomy & astrophysics ,Astrophysics::Galaxy Astrophysics ,Physics ,radio continuum: galaxies ,010308 nuclear & particles physics ,Star formation ,Significant difference ,Resolution (electron density) ,X-ray ,Astronomy and Astrophysics ,Astrophysics - Astrophysics of Galaxies ,galaxies: Seyfert ,galaxies [radio continuum] ,Black hole ,Stars ,Space and Planetary Science ,Astrophysics of Galaxies (astro-ph.GA) ,active [galaxies] ,galaxies: nuclei - Abstract
We have conducted 22 GHz radio imaging at 1" resolution of 100 low-redshift AGN selected at 14-195 keV by the Swift-BAT. We find a radio core detection fraction of 96%, much higher than lower-frequency radio surveys. Of the 96 radio-detected AGN, 55 have compact morphologies, 30 have morphologies consistent with nuclear star formation, and 11 have sub-kpc to kpc-scale jets. We find that the total radio power does not distinguish between nuclear star formation and jets as the origin of the radio emission. For 87 objects, we use optical spectroscopy to test whether AGN physical parameters are distinct between radio morphological types. We find that X-ray luminosities tend to be higher if the 22 GHz morphology is jet-like, but find no significant difference in other physical parameters. We find that the relationship between the X-ray and core radio luminosities is consistent with the $L_R/L_X \sim 10^{-5}$ of coronally active stars. We further find that the canonical fundamental planes of black hole activity systematically over-predict our radio luminosities, particularly for objects with star formation morphologies., Comment: 22 pages, 10 figures, 2 tables. Accepted for publication in MNRAS more...
- Published
- 2020
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