Ordered magnetic fields around the 3C 84 central black hole

Paraschos, G. F.; Kim, J. -Y.; Wielgus, M.; Röder, J.; Krichbaum, T. P.; Ros, E.; Agudo, I.; Myserlis, I.; Moscibrodzka, M.; Traianou, E.; Zensus, J. A.; Blackburn, L.; Chan, C. -K.; Issaoun, S.; Janssen, M.; Johnson, M. D.; Fish, V. L.; Akiyama, K.; Alberdi, A.; Alef, W.; Algaba, J. C.; Anantua, R.; Asada, K.; Azulay, R.; Bach, U.; Baczko, A. -K.; Ball, D.; Baloković, M.; Barrett, J.; Bauböck, M.; Benson, B. A.; Bintley, D.; Blundell, R.; Bouman, K. L.; Bower, G. C.; Boyce, H.; Bremer, M.; Brinkerink, C. D.; Brissenden, R.; Britzen, S.; Broderick, A. E.; Broguiere, D.; Bronzwaer, T.; Bustamante, S.; Byun, D. -Y.; Carlstrom, J. E.; Ceccobello, C.; Chael, A.; Chang, D. O.; Chatterjee, K.; Chatterjee, S.; Chen, M. T.; Chen, Y.; Cheng, X.; Cho, I.; Christian, P.; Conroy, N. S.; Conway, J. E.; Cordes, J. M.; Crawford, T. M.; Crew, G. B.; Cruz-Osorio, A.; Cui, Y.; Dahale, R.; Davelaar, J.; De Laurentis, M.; Deane, R.; Dempsey, J.; Desvignes, G.; Dexter, J.; Dhruv, V.; Doeleman, S. S.; Dougal, S.; Dzib, S. A.; Eatough, R. P.; Emami, R.; Falcke, H.; Farah, J.; Fomalont, E.; Ford, H. A.; Foschi, M.; Fraga-Encinas, R.; Freeman, W. T.; Friberg, P.; Fromm, C. M.; Fuentes, A.; Galison, P.; Gammie, C. F.; García, R.; Gentaz, O.; Georgiev, B.; Goddi, C.; Gold, R.; Gómez-Ruiz, A. I.; Gómez, J. L.; Gu, M.; Gurwell, M.; Hada, K.; Haggard, D.; Haworth, K.; Hecht, M. H.; Hesper, R.; Heumann, D.; Ho, L. C.; Ho, P.; Honma, M.; Huang, C. L.; Huang, L.; Hughes, D. H.; Ikeda, S.; Impellizzeri, C. V.; Inoue, M.; James, D. J.; Jannuzi, B. T.; Jeter, B.; Jaing, W.; Jiménez-Rosales, A.; Jorstad, S.; Joshi, A. V.; Jung, T.; Karami, M.; Karuppusamy, R.; Kawashima, T.; Keating, G. K.; Kettenis, M.; Kim, D. -J.; Kim, J.; Kim, J.; Kino, M.; Koay, J. Y.; Kocherlakota, P.; Kofuji, Y.; Koch, P. M.; Koyama, S.; Kramer, C.; Kramer, J. A.; Kramer, M.; Kuo, C. -Y.; La Bella, N.; Lauer, T. R.; Lee, D.; Lee, S. -S.; Leung, P. K.; Levis, A.; Li, Z.; Lico, R.; Lindahl, G.; Lindqvist, M.; Lisakov, M.; Liu, J.; Liu, K.; Liuzzo, E.; Lo, W. -P.; Lobanov, A. P.; Loinard, L.; Lonsdale, C. J.; Lowitz, A. E.; Lu, R. -S.; MacDonald, N. R.; Mao, J.; Marchili, N.; Markoff, S.; Marrone, D. P.; Marscher, A. P.; Martí-Vidal, I.; Matsushita, S.; Matthews, L. D.; Medeiros, L.; Menten, K. M.; Michalik, D.; Mizuno, I.; Mizuno, Y.; Moran, J. M.; Moriyama, K.; Mulaudzi, W.; Müller, C.; Müller, H.; Mus, A.; Musoke, G.; Nadolski, A.; Nagai, H.; Nagar, N. M.; Nakamura, M.; Narayanan, G.; Natarajan, I.; Nathanail, A.; Navarro Fuentes, S.; Neilsen, J.; Neri, R.; Ni, C.; Noutsos, A.; Nowak, M. A.; Oh, J.; Okino, H.; Olivares, H.; Ortiz-León, G. N.; Oyama, T.; Özel, F.; Palumbo, D. M.; Park, J.; Parsons, H.; Patel, N.; Pen, U. -L.; Piétu, V.; Plambeck, R.; PopStefanija, A.; Porth, O.; Pötzl, F. M.; Prather, B.; Preciado-López, J. A.; Psaltis, D.; Pu, H. -Y.; Ramakrishnan, V.; Rao, R.; Rawlings, M. G.; Raymond, A. W.; Rezzolla, L.; Ricarte, A.; Ripperda, B.; Roelofs, F.; Rogers, A.; Romero-Cañizales, C.; Roshanineshat, A.; Rottmann, H.; Roy, A. L.; Ruiz, I.; Ruszczyk, C.; Rygl, K. J.; Sánchez, S.; Sánchez-Argüelles, D.; Sánchez-Portal, M.; Sasada, M.; Satapathy, K.; Savolainen, T.; Schloerb, F. P.; Schonfeld, J.; Schuster, K.; Shao, L.; Shen, Z.; Small, D.; Sohn, B. W.; SooHoo, J.; Sosapanta Salas, L. D.; Souccar, K.; Sun, H.; Tazaki, F.; Tetarenko, A. J.; Tiede, P.; Tilanus, R. J.; Titus, M.; Torne, P.; Toscano, T.; Trent, T.; Trippe, S.; Turk, M.; van Bemmel, I.; van Langevelde, H. J.; van Rossum, D. R.; Vos, J.; Wagner, J.; Ward-Thompson, D.; Wardle, J.; Washington, J. E.; Weintroub, J.; Wharton, R.; Wiik, K.; Witzel, G.; Wondrak, M. F.; Wong, G. N.; Wu, Q.; Yadlapalli, N.; Yamaguchi, P.; Yfantis, A.; Yoon, D.; Young, A.; Young, K.; Younsi, Z.; Yu, W.; Yuan, F.; Yuan, Y. -F.; Zhang, S.; Zhao, G. Y.; Zhao, S. -S.

doi:10.1051/0004-6361/202348308

Title: Ordered magnetic fields around the 3C 84 central black hole

Journal Article · Thu Feb 01 00:00:00 EST 2024 · Astronomy and Astrophysics

DOI:https://doi.org/10.1051/0004-6361/202348308· OSTI ID:2298976

;

; Röder, J.;

;

; Moscibrodzka, M.;

; Zensus, J. A.; Blackburn, L.; Chan, C. -K.; Issaoun, S.; Janssen, M.; Johnson, M. D.; Fish, V. L.; Akiyama, K.;

; Alef, W. more »

Context. 3C 84 is a nearby radio source with a complex total intensity structure, showing linear polarisation and spectral patterns. A detailed investigation of the central engine region necessitates the use of very-long-baseline interferometry (VLBI) above the hitherto available maximum frequency of 86 GHz. Aims. Using ultrahigh resolution VLBI observations at the currently highest available frequency of 228 GHz, we aim to perform a direct detection of compact structures and understand the physical conditions in the compact region of 3C 84. Methods. We used Event Horizon Telescope (EHT) 228 GHz observations and, given the limited (u, v)-coverage, applied geometric model fitting to the data. Furthermore, we employed quasi-simultaneously observed, ancillary multi-frequency VLBI data for the source in order to carry out a comprehensive analysis of the core structure. Results. We report the detection of a highly ordered, strong magnetic field around the central, supermassive black hole of 3C 84. The brightness temperature analysis suggests that the system is in equipartition. We also determined a turnover frequency of ν_m = (113 ± 4) GHz, a corresponding synchrotron self-absorbed magnetic field of B_SSA = (2.9 ± 1.6) G, and an equipartition magnetic field of B_eq = (5.2 ± 0.6) G. Three components are resolved with the highest fractional polarisation detected for this object (m_net = (17.0 ± 3.9)%). The positions of the components are compatible with those seen in low-frequency VLBI observations since 2017–2018. We report a steeply negative slope of the spectrum at 228 GHz. We used these findings to test existing models of jet formation, propagation, and Faraday rotation in 3C 84. Conclusions. The findings of our investigation into different flow geometries and black hole spins support an advection-dominated accretion flow in a magnetically arrested state around a rapidly rotating supermassive black hole as a model of the jet-launching system in the core of 3C 84. However, systematic uncertainties due to the limited (u, v)-coverage, however, cannot be ignored. Our upcoming work using new EHT data, which offer full imaging capabilities, will shed more light on the compact region of 3C 84.

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Research Organization:: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP); USDOE National Nuclear Security Administration (NNSA)

Contributing Organization:: Event Horizon Telescope (EHT) Collaboration

Grant/Contract Number:: AC02-07CH11359; 89233218CNA000001; AC05-00OR22725

OSTI ID:: 2298976

Report Number(s):: FERMILAB-PUB-24-0058-PPD; arXiv:2402.00927; oai:inspirehep.net:2755087

Journal Information:: Astronomy and Astrophysics, Vol. 682; ISSN 0004-6361

Publisher:: EDP SciencesCopyright Statement

Country of Publication:: United States

Language:: English

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FERMI DISCOVERY OF GAMMA-RAY EMISSION FROM NGC 1275 Abdo, A. A.; Ackermann, M.; Ajello, M. The Astrophysical Journal, Vol. 699, Issue 1 https://doi.org/10.1088/0004-637X/699/1/31	journal	June 2009
Resolving the Inner Parsec of the Blazar J1924–2914 with the Event Horizon Telescope Issaoun, Sara; Wielgus, Maciek; Jorstad, Svetlana The Astrophysical Journal, Vol. 934, Issue 2 https://doi.org/10.3847/1538-4357/ac7a40	journal	August 2022
A multi-band study and exploration of the radio wave–γ-ray connection in 3C 84 Paraschos, G. F.; Mpisketzis, V.; Kim, J. -Y. Astronomy & Astrophysics, Vol. 669 https://doi.org/10.1051/0004-6361/202244814	journal	January 2023
rPICARD: A CASA-based calibration pipeline for VLBI data: Calibration and imaging of 7 mm VLBA observations of the AGN jet in M 87 Janssen, M.; Goddi, C.; van Bemmel, I. M. Astronomy & Astrophysics, Vol. 626 https://doi.org/10.1051/0004-6361/201935181	journal	June 2019

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