What drives kpc-scale outflows in Radio-Quiet AGN? Insights from a Polarimetric Study
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arXiv
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| Autores principales: | , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866914046897291264 |
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| author | Ghosh, Salmoli Kharb, Preeti Sebastian, Biny Gallimore, Jack Pasetto, Alice O'Dea, Christopher P. Heckman, Timothy Baum, Stefi A. |
| author_facet | Ghosh, Salmoli Kharb, Preeti Sebastian, Biny Gallimore, Jack Pasetto, Alice O'Dea, Christopher P. Heckman, Timothy Baum, Stefi A. |
| contents | We present a review of our findings on the origin, drivers, nature, and impact of kiloparsec-scale radio emission in radio-quiet (RQ) AGN. Using radio polarimetric techniques, we probe the dynamics and magnetic (B-) field geometry of outflows in Seyfert and LINER galaxies. Multi-band data from the Karl G. Jansky Very Large Array (VLA) reveal how low-power jets interact with their environment. These interactions can slow down and disrupt the radio outflows while locally regulating star formation through AGN feedback. Several radio properties correlate strongly with the black hole mass, similar to trends observed in radio-loud (RL) AGN. Although their characteristics differ, RQ systems might not be intrinsically distinct from RL AGN, apart from lower jet powers. Our polarization measurements further suggest a composite model in which a black hole-accretion disk system drives both a collimated jet with a small-pitch-angle helical B-field and a wide-angle wind threaded by a high-pitch-angle helical field. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_15355 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | What drives kpc-scale outflows in Radio-Quiet AGN? Insights from a Polarimetric Study Ghosh, Salmoli Kharb, Preeti Sebastian, Biny Gallimore, Jack Pasetto, Alice O'Dea, Christopher P. Heckman, Timothy Baum, Stefi A. Astrophysics of Galaxies We present a review of our findings on the origin, drivers, nature, and impact of kiloparsec-scale radio emission in radio-quiet (RQ) AGN. Using radio polarimetric techniques, we probe the dynamics and magnetic (B-) field geometry of outflows in Seyfert and LINER galaxies. Multi-band data from the Karl G. Jansky Very Large Array (VLA) reveal how low-power jets interact with their environment. These interactions can slow down and disrupt the radio outflows while locally regulating star formation through AGN feedback. Several radio properties correlate strongly with the black hole mass, similar to trends observed in radio-loud (RL) AGN. Although their characteristics differ, RQ systems might not be intrinsically distinct from RL AGN, apart from lower jet powers. Our polarization measurements further suggest a composite model in which a black hole-accretion disk system drives both a collimated jet with a small-pitch-angle helical B-field and a wide-angle wind threaded by a high-pitch-angle helical field. |
| title | What drives kpc-scale outflows in Radio-Quiet AGN? Insights from a Polarimetric Study |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2509.15355 |