Resolving Dual Active Galactic Nuclei with ~100 pc separation in MCG-03-34-64
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866929501918724096 |
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| author | Falcao, Anna Trindade Turner, T. J. Kraemer, S. B. Braito, V. Reeves, J. Schmitt, H. R. Feuillet, L. |
| author_facet | Falcao, Anna Trindade Turner, T. J. Kraemer, S. B. Braito, V. Reeves, J. Schmitt, H. R. Feuillet, L. |
| contents | We report the serendipitous multiwavelength discovery of a candidate dual black hole system with a separation of ~100 pc, in the gas-rich luminous infrared galaxy MCG-03-34-64 (z=0.016). Hubble Space Telescope/ACS observations show three distinct optical centroids in the [O III] narrow-band and F814W images. Subsequent analysis of Chandra/ACIS data shows two spatially-resolved peaks of equal intensity in the neutral Fe Ka (6.2-6.6 keV) band, while high-resolution radio continuum observations with the Very Large Array at 8.46 GHz (3.6 cm band) show two spatially-coincident radio peaks. Fast shocks as the ionizing source seem unlikely, given the energies required for production of Fe Ka. If confirmed, the separation of ~100 pc would represent the closest dual AGN reported to date with spatially-resolved, multiwavelength observations. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2403_07717 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Resolving Dual Active Galactic Nuclei with ~100 pc separation in MCG-03-34-64 Falcao, Anna Trindade Turner, T. J. Kraemer, S. B. Braito, V. Reeves, J. Schmitt, H. R. Feuillet, L. Astrophysics of Galaxies We report the serendipitous multiwavelength discovery of a candidate dual black hole system with a separation of ~100 pc, in the gas-rich luminous infrared galaxy MCG-03-34-64 (z=0.016). Hubble Space Telescope/ACS observations show three distinct optical centroids in the [O III] narrow-band and F814W images. Subsequent analysis of Chandra/ACIS data shows two spatially-resolved peaks of equal intensity in the neutral Fe Ka (6.2-6.6 keV) band, while high-resolution radio continuum observations with the Very Large Array at 8.46 GHz (3.6 cm band) show two spatially-coincident radio peaks. Fast shocks as the ionizing source seem unlikely, given the energies required for production of Fe Ka. If confirmed, the separation of ~100 pc would represent the closest dual AGN reported to date with spatially-resolved, multiwavelength observations. |
| title | Resolving Dual Active Galactic Nuclei with ~100 pc separation in MCG-03-34-64 |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2403.07717 |