Hubble Space Telescope Observations within the Sphere of Influence of the Powerful Supermassive Black Hole in PKS 0745-191
We present Space Telescope Imaging Spectrograph observations from the Hubble Space Telescope of the supermassive black hole (SMBH) at the center of PKS 0745-191, a brightest cluster galaxy (BCG) undergoing powerful radio-mode active galactic nucleus (AGN) feedback ( P _cav ~ 5 × 10 ^45 erg s ^−1 )....
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2025-01-01
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| Online Access: | https://doi.org/10.3847/1538-4357/ada7ed |
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| author | Julie Hlavacek-Larrondo Hyunseop Choi Minghao Guo Annabelle Richard-Laferrière Carter Rhea Marine Prunier Helen Russell Andy Fabian Jonelle L. Walsh Marie-Joëlle Gingras Brian McNamara Steve Allen André-Nicolas Chené Alastair Edge Marie-Lou Gendron-Marsolais Michael McDonald Priyamvada Natarajan Jeremy Sanders James F. Steiner Benjamin Vigneron Anja von der Linden |
| author_facet | Julie Hlavacek-Larrondo Hyunseop Choi Minghao Guo Annabelle Richard-Laferrière Carter Rhea Marine Prunier Helen Russell Andy Fabian Jonelle L. Walsh Marie-Joëlle Gingras Brian McNamara Steve Allen André-Nicolas Chené Alastair Edge Marie-Lou Gendron-Marsolais Michael McDonald Priyamvada Natarajan Jeremy Sanders James F. Steiner Benjamin Vigneron Anja von der Linden |
| author_sort | Julie Hlavacek-Larrondo |
| collection | DOAJ |
| description | We present Space Telescope Imaging Spectrograph observations from the Hubble Space Telescope of the supermassive black hole (SMBH) at the center of PKS 0745-191, a brightest cluster galaxy (BCG) undergoing powerful radio-mode active galactic nucleus (AGN) feedback ( P _cav ~ 5 × 10 ^45 erg s ^−1 ). These high-resolution data offer the first spatially resolved map of gas dynamics within an SMBH's sphere of influence under such powerful feedback. Our results reveal the presence of highly chaotic, nondrotational ionized gas flows on subkiloparsec scales, in contrast to the more coherent flows observed on larger scales. While radio-mode feedback effectively thermalizes hot gas in galaxy clusters on kiloparsec scales, within the core, the hot gas flow may decouple, leading to a reduction in angular momentum and supplying ionized gas through cooling, which could enhance accretion onto the SMBH. This process could, in turn, lead to a self-regulating feedback loop. Compared to other BCGs with weaker radio-mode feedback, where rotation is more stable, intense feedback may lead to more chaotic flows, indicating a stronger coupling between jet activity and gas dynamics. Additionally, we observe a sharp increase in velocity dispersion near the nucleus, consistent with a very massive M _BH ~ 1.5 × 10 ^10 M _⊙ SMBH. The density profile of the ionized gas is also notably flat, paralleling the profiles observed in X-ray gas around galaxies where the Bondi radius is resolved. These results provide valuable insights into the complex mechanisms driving galaxy evolution, highlighting the intricate relationship between SMBH fueling and AGN feedback within the host galaxy. |
| format | Article |
| id | doaj-art-c65d24daf2534cadaad1caedae7ccce3 |
| institution | Kabale University |
| issn | 1538-4357 |
| language | English |
| publishDate | 2025-01-01 |
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| series | The Astrophysical Journal |
| spelling | doaj-art-c65d24daf2534cadaad1caedae7ccce32025-02-12T09:19:30ZengIOP PublishingThe Astrophysical Journal1538-43572025-01-01980217010.3847/1538-4357/ada7edHubble Space Telescope Observations within the Sphere of Influence of the Powerful Supermassive Black Hole in PKS 0745-191Julie Hlavacek-Larrondo0https://orcid.org/0000-0001-7271-7340Hyunseop Choi1https://orcid.org/0000-0002-3173-1098Minghao Guo2https://orcid.org/0000-0002-3680-5420Annabelle Richard-Laferrière3https://orcid.org/0000-0001-7597-270XCarter Rhea4Marine Prunier5Helen Russell6Andy Fabian7https://orcid.org/0000-0002-9378-4072Jonelle L. Walsh8https://orcid.org/0000-0002-1881-5908Marie-Joëlle Gingras9Brian McNamara10https://orcid.org/0000-0002-2622-2627Steve Allen11https://orcid.org/0000-0003-0667-5941André-Nicolas Chené12https://orcid.org/0000-0002-1115-6559Alastair Edge13https://orcid.org/0000-0002-3398-6916Marie-Lou Gendron-Marsolais14Michael McDonald15https://orcid.org/0000-0001-5226-8349Priyamvada Natarajan16https://orcid.org/0000-0002-5554-8896Jeremy Sanders17https://orcid.org/0000-0003-2189-4501James F. Steiner18https://orcid.org/0000-0002-5872-6061Benjamin Vigneron19https://orcid.org/0000-0002-2478-5119Anja von der Linden20https://orcid.org/0000-0002-3881-7724Département de Physique, Université de Montréal , Succ. Centre-Ville, Montréal, Québec, H3C 3J7, Canada ; j.larrondo@umontreal.caDépartement de Physique, Université de Montréal , Succ. Centre-Ville, Montréal, Québec, H3C 3J7, Canada ; j.larrondo@umontreal.caDepartment of Astrophysical Sciences, Princeton University , Princeton, NJ 08540, USAInstitute of Astronomy, University of Cambridge , Madingley Road, Cambridge CB3 0HA, UKDépartement de Physique, Université de Montréal , Succ. Centre-Ville, Montréal, Québec, H3C 3J7, Canada ; j.larrondo@umontreal.caDépartement de Physique, Université de Montréal , Succ. Centre-Ville, Montréal, Québec, H3C 3J7, Canada ; j.larrondo@umontreal.caSchool of Physics & Astronomy, University of Nottingham , University Park, Nottingham NG7 2RD, UKInstitute of Astronomy, University of Cambridge , Madingley Road, Cambridge CB3 0HA, UKDepartment of Physics and Astronomy, Texas A&M University , College Station, TX 77843-4242, USA; George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, Texas A&M University , TX 77843-4242, USADepartment of Physics and Astronomy, University of Waterloo , 200 University Avenue West, Waterloo, ON N2L 3G1, Canada; Waterloo Centre for Astrophysics , Waterloo, ON N2L 3G1, CanadaDepartment of Physics and Astronomy, University of Waterloo , 200 University Avenue West, Waterloo, ON N2L 3G1, Canada; Waterloo Centre for Astrophysics , Waterloo, ON N2L 3G1, CanadaDepartment of Physics, Stanford University , 382 Via Pueblo Mall, Stanford, CA 94305, USA; Kavli Institute for Particle Astrophysics and Cosmology, Stanford University , 452 Lomita Mall, Stanford, CA 94305, USA; SLAC National Accelerator Laboratory , 2575 Sand Hill Road, Menlo Park, CA 94025, USANSF NOIRLab , 670 N. A’ohoku Place, Hilo, HI 96720, USACentre for Extragalactic Astronomy, Department of Physics, Durham University , Durham DH1 3LE, UKDépartement de physique, de génie physique et d’optique, Université Laval , Québec (QC), G1V 0A6, CanadaKavli Institute for Astrophysics and Space Research , MIT, 77 Massachusetts Avenue, Cambridge, MA 02139, USADepartment of Astronomy, Yale University , 219 Prospect Street, New Haven, CT 06511, USA; Department of Physics, Yale University , 217 Prospect Street, New Haven, CT 06511, USA; Black Hole Initiative at Harvard University , 20 Garden Street, Cambridge, MA 02138, USAMax-Planck-Institut fur extraterrestrische Physik , Giessenbachstrasse 1, 85748 Garching, GermanyCenter for Astrophysics , Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USADépartement de Physique, Université de Montréal , Succ. Centre-Ville, Montréal, Québec, H3C 3J7, Canada ; j.larrondo@umontreal.caDepartment of Physics and Astronomy, Stony Brook University , Stony Brook, NY 11794, USAWe present Space Telescope Imaging Spectrograph observations from the Hubble Space Telescope of the supermassive black hole (SMBH) at the center of PKS 0745-191, a brightest cluster galaxy (BCG) undergoing powerful radio-mode active galactic nucleus (AGN) feedback ( P _cav ~ 5 × 10 ^45 erg s ^−1 ). These high-resolution data offer the first spatially resolved map of gas dynamics within an SMBH's sphere of influence under such powerful feedback. Our results reveal the presence of highly chaotic, nondrotational ionized gas flows on subkiloparsec scales, in contrast to the more coherent flows observed on larger scales. While radio-mode feedback effectively thermalizes hot gas in galaxy clusters on kiloparsec scales, within the core, the hot gas flow may decouple, leading to a reduction in angular momentum and supplying ionized gas through cooling, which could enhance accretion onto the SMBH. This process could, in turn, lead to a self-regulating feedback loop. Compared to other BCGs with weaker radio-mode feedback, where rotation is more stable, intense feedback may lead to more chaotic flows, indicating a stronger coupling between jet activity and gas dynamics. Additionally, we observe a sharp increase in velocity dispersion near the nucleus, consistent with a very massive M _BH ~ 1.5 × 10 ^10 M _⊙ SMBH. The density profile of the ionized gas is also notably flat, paralleling the profiles observed in X-ray gas around galaxies where the Bondi radius is resolved. These results provide valuable insights into the complex mechanisms driving galaxy evolution, highlighting the intricate relationship between SMBH fueling and AGN feedback within the host galaxy.https://doi.org/10.3847/1538-4357/ada7edSupermassive black holesBrightest cluster galaxiesRadio active galactic nucleiGalaxy clustersHubble Space TelescopeGalaxy nuclei |
| spellingShingle | Julie Hlavacek-Larrondo Hyunseop Choi Minghao Guo Annabelle Richard-Laferrière Carter Rhea Marine Prunier Helen Russell Andy Fabian Jonelle L. Walsh Marie-Joëlle Gingras Brian McNamara Steve Allen André-Nicolas Chené Alastair Edge Marie-Lou Gendron-Marsolais Michael McDonald Priyamvada Natarajan Jeremy Sanders James F. Steiner Benjamin Vigneron Anja von der Linden Hubble Space Telescope Observations within the Sphere of Influence of the Powerful Supermassive Black Hole in PKS 0745-191 The Astrophysical Journal Supermassive black holes Brightest cluster galaxies Radio active galactic nuclei Galaxy clusters Hubble Space Telescope Galaxy nuclei |
| title | Hubble Space Telescope Observations within the Sphere of Influence of the Powerful Supermassive Black Hole in PKS 0745-191 |
| title_full | Hubble Space Telescope Observations within the Sphere of Influence of the Powerful Supermassive Black Hole in PKS 0745-191 |
| title_fullStr | Hubble Space Telescope Observations within the Sphere of Influence of the Powerful Supermassive Black Hole in PKS 0745-191 |
| title_full_unstemmed | Hubble Space Telescope Observations within the Sphere of Influence of the Powerful Supermassive Black Hole in PKS 0745-191 |
| title_short | Hubble Space Telescope Observations within the Sphere of Influence of the Powerful Supermassive Black Hole in PKS 0745-191 |
| title_sort | hubble space telescope observations within the sphere of influence of the powerful supermassive black hole in pks 0745 191 |
| topic | Supermassive black holes Brightest cluster galaxies Radio active galactic nuclei Galaxy clusters Hubble Space Telescope Galaxy nuclei |
| url | https://doi.org/10.3847/1538-4357/ada7ed |
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