Radio-Near Infrared Imaging of Dual Active Galactic Nuclei Candidates
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arXiv
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| Main Authors: | , , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2026
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| _version_ | 1866910005295316992 |
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| author | Johnstone, Makoto A. Yoon, Ilsang Momjian, Emmanuel Barcos-Muñoz, Loreto Evans, A. S. Emonts, Bjorn Glikman, Eilat Kim, Dong-Chan Kim, Ji Hoon Kim, Minjin Lacy, Mark Privon, George C. Kunneriath, Devaky Nagarajan-Swenson, Jaya Torres-Albà, Núria Green, Kara N. |
| author_facet | Johnstone, Makoto A. Yoon, Ilsang Momjian, Emmanuel Barcos-Muñoz, Loreto Evans, A. S. Emonts, Bjorn Glikman, Eilat Kim, Dong-Chan Kim, Ji Hoon Kim, Minjin Lacy, Mark Privon, George C. Kunneriath, Devaky Nagarajan-Swenson, Jaya Torres-Albà, Núria Green, Kara N. |
| contents | We report the results of a pilot study that searched for dual active galactic nuclei (AGN) in local ($z<$0.25) galaxies hosting double-peaked narrow emission lines in their optical spectra. We present high-resolution $L-$band (1.5 GHz or 18 cm) continuum images from the Very Long Baseline Array (VLBA) as well as WFC3/IR F160W images from the Hubble Space Telescope of two candidate dual AGN systems: J0948+6848 and J1223+5409. In both targets, we detected compact non-thermal radio emission that is approximately co-spatial with the near-infrared AGN. Both systems host two high brightness temperature ($>10^{8}$ K) radio sources that indicate the presence of either a parsec-scale-separation dual AGN ($d_{\text{sep}} \sim 90$ pc and $\sim 56$ pc, respectively) or a radio jet. Matched-resolution multi-band radio observations are necessary to further characterize the AGN activity in these systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_20984 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Radio-Near Infrared Imaging of Dual Active Galactic Nuclei Candidates Johnstone, Makoto A. Yoon, Ilsang Momjian, Emmanuel Barcos-Muñoz, Loreto Evans, A. S. Emonts, Bjorn Glikman, Eilat Kim, Dong-Chan Kim, Ji Hoon Kim, Minjin Lacy, Mark Privon, George C. Kunneriath, Devaky Nagarajan-Swenson, Jaya Torres-Albà, Núria Green, Kara N. Astrophysics of Galaxies We report the results of a pilot study that searched for dual active galactic nuclei (AGN) in local ($z<$0.25) galaxies hosting double-peaked narrow emission lines in their optical spectra. We present high-resolution $L-$band (1.5 GHz or 18 cm) continuum images from the Very Long Baseline Array (VLBA) as well as WFC3/IR F160W images from the Hubble Space Telescope of two candidate dual AGN systems: J0948+6848 and J1223+5409. In both targets, we detected compact non-thermal radio emission that is approximately co-spatial with the near-infrared AGN. Both systems host two high brightness temperature ($>10^{8}$ K) radio sources that indicate the presence of either a parsec-scale-separation dual AGN ($d_{\text{sep}} \sim 90$ pc and $\sim 56$ pc, respectively) or a radio jet. Matched-resolution multi-band radio observations are necessary to further characterize the AGN activity in these systems. |
| title | Radio-Near Infrared Imaging of Dual Active Galactic Nuclei Candidates |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2601.20984 |