Ordered magnetic fields around the 3C 84 central black hole
Authors
PARASCHOS, G. F., J-Y KIM, Maciek WIELGUS (616 Poland, belonging to the institution), J. ROEDER, T. P. KRICHBAUM, E. ROS, I. AGUDO, I. MYSERLIS, M. MOSCIBRODZKA, E. TRAIANOU, J. A. ZENSUS, L. BLACKBURN, C-K CHAN, S. ISSAOUN, M. JANSSEN, M. D. JOHNSON, V. L. FISH, K. AKIYAMA, A. ALBERDI, W. ALEF, J. C. ALGABA, R. ANANTUA, K. ASADA, R. AZULAY, U. BACH, A-K BACZKO, D. BALL, M. BALOKOVIC, J. BARRETT, M. BAUBOCK, B. A. BENSON, D. BINTLEY, R. BLUNDELL, K. L. BOUMAN, G. C. BOWER, H. BOYCE, M. BREMER, C. D. BRINKERINK, R. BRISSENDEN, S. BRITZEN, A. E. BRODERICK, D. BROGUIERE, T. BRONZWAER, S. BUSTAMANTE, D-Y BYUN, J. E. CARLSTROM, C. CECCOBELLO, A. CHAEL, D. O. CHANG, K. CHATTERJEE, S. CHATTERJEE, M. T. CHEN, Y. CHEN, X. CHENG, I. CHO, P. CHRISTIAN, N. S. CONROY, J. E. CONWAY, J. M. CORDES, T. M. CRAWFORD, G. B. CREW, A. CRUZ-OSORIO, Y. CUI, R. DAHALE, J. DAVELAAR, M. DE LAURENTIS, R. DEANE, J. DEMPSEY, G. DESVIGNES, J. DEXTER, V. DHRUV, S. S. DOELEMAN, S. DOUGAL, S. A. DZIB, R. P. EATOUGH, R. EMAMI, H. FALCKE, J. FARAH, E. FOMALONT, H. A. FORD, M. FOSCHI, R. FRAGA-ENCINAS, W. T. FREEMAN, P. FRIBERG, C. M. FROMM, A. FUENTES, P. GALISON, C. F. GAMMIE, R. GARCIA, O. GENTAZ, B. GEORGIEV, C. GODDI, R. GOLD, A. I. GOMEZ-RUIZ, J. L. GOMEZ, M. GU, M. GURWELL, K. HADA, D. HAGGARD, K. HAWORTH, M. H. HECHT, R. HESPER, D. HEUMANN, L. C. HO, P. HO, M. HONMA, C. L. HUANG, L. HUANG, D. H. HUGHES, S. IKEDA, C. M. V. IMPELLIZZERI, M. INOUE, D. J. JAMES, B. T. JANNUZI, B. JETER, W. JAING, A. JIMENEZ-ROSALES, S. JORSTAD, A. V. JOSHI, T. JUNG, M. KARAMI, R. KARUPPUSAMY, T. KAWASHIMA, G. K. KEATING, M. KETTENIS, D-J KIM, J. KIM, J. KIM, M. KINO, J. Y. KOAY, P. KOCHERLAKOTA, Y. KOFUJI, P. M. KOCH, S. KOYAMA, C. KRAMER, J. A. KRAMER, M. KRAMER, C-Y KUO, N. LA BELLA, T. R. LAUER, D. LEE, S-S LEE, P. K. LEUNG, A. LEVIS, Z. LI, R. LICO, G. LINDAHL, M. LINDQVIST, M. LISAKOV, J. LIU, K. LIU, E. LIUZZO, W-P LO, A. P. LOBANOV, L. LOINARD, C. J. LONSDALE, A. E. LOWITZ, R-S LU, N. R. MACDONALD, J. MAO, N. MARCHILI, S. MARKOFF, D. P. MARRONE, A. P. MARSCHER, I. MARTI-VIDAL, S. MATSUSHITA, L. D. MATTHEWS, L. MEDEIROS, K. M. MENTEN, D. MICHALIK, I.. MIZUNO, Y. MIZUNO, J. M. MORAN, K. MORIYAMA, W. MULAUDZI, C. MUELLER, H. MUELLER, A. MUS, G. MUSOKE, A. NADOLSKI, H. NAGAI, N. M. NAGAR, M. NAKAMURA, G. NARAYANAN, I. NATARAJAN, A. NATHANAIL, S. NAVARRO FUENTES, J. NEILSEN, R. NERI, C. NI, A. NOUTSOS, M. A. NOWAK, J. OH, H. OKINO, H. OLIVARES, G. N. ORTIZ-LEON, T. OYAMA, F. OZEL, D. C. M. PALUMBO, J. PARK, H. PARSONS, N. PATEL, U-L PEN, V. PIETU, R. PLAMBECK, A. POPSTEFANIJA, O. PORTH, F. M. POTZL, B. PRATHER, J. A. PRECIADO-LOPEZ, D. PSALTIS, H-Y PU, V. RAMAKRISHNAN, R.. RAO, M. G. RAWLINGS, A. W. RAYMOND, L. REZZOLLA, A. RICARTE, B. RIPPERDA, F. ROELOFS, A. ROGERS, C. ROMERO-CANIZALES, A. ROSHANINESHAT, H. ROTTMANN, A. L. ROY, I. RUIZ, C. RUSZCZYK, K. L. J. RYGL, S. SANCHEZ, D. SANCHEZ-ARGUELLES, M. SANCHEZ-PORTAL, M. SASADA, K. SATAPATHY, T. SAVOLAINEN, F. P. SCHLOERB, J. SCHONFELD, K. SCHUSTER, L. SHAO, Z. SHEN, D. SMALL, B. W. SOHN, J. SOOHOO, L. D. Sosapanta SALAS, K. SOUCCAR, H. SUN, F. TAZAKI, A. J. TETARENKO, P. TIEDE, R. P. J. TILANUS, M. TITUS, P. TORNE, T. TOSCANO, T. TRENT, S. TRIPPE, M. TURK, I. VAN BEMMEL, J. H. VAN LANGEVELDE, R. D. VAN ROSSUM, J. VOS, J. WAGNER, D. WARD-THOMPSON, J. WARDLE, J. E. WASHINGTON, J. WEINTROUB, R. WHARTON, K. WIIK, G. WITZEL, M. F. WONDRAK, G. N. WONG, Q. WU, N. YADLAPALLI, P. YAMAGUCHI, A. YFANTIS, D. YOON, A. YOUNG, K. YOUNG, Z. YOUNSI, W. YU, F. YUAN, Y-F YUAN, S. ZHANG, G. Y. ZHAO and S-S ZHAO
Edition
ASTRONOMY & ASTROPHYSICS, LES ULIS CEDEX A, EDP SCIENCES S A, 2024, 0004-6361
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 gamma(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 di fferent 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 o ffer full imaging capabilities, will shed more light on the compact region of 3C 84.
PARASCHOS, G. F., J-Y KIM, Maciek WIELGUS, J. ROEDER, T. P. KRICHBAUM, E. ROS, I. AGUDO, I. MYSERLIS, M. MOSCIBRODZKA, E. TRAIANOU, J. A. ZENSUS, L. BLACKBURN, C-K CHAN, S. ISSAOUN, M. JANSSEN, M. D. JOHNSON, V. L. FISH, K. AKIYAMA, A. ALBERDI, W. ALEF, J. C. ALGABA, R. ANANTUA, K. ASADA, R. AZULAY, U. BACH, A-K BACZKO, D. BALL, M. BALOKOVIC, J. BARRETT, M. BAUBOCK, B. A. BENSON, D. BINTLEY, R. BLUNDELL, K. L. BOUMAN, G. C. BOWER, H. BOYCE, M. BREMER, C. D. BRINKERINK, R. BRISSENDEN, S. BRITZEN, A. E. BRODERICK, D. BROGUIERE, T. BRONZWAER, S. BUSTAMANTE, D-Y BYUN, J. E. CARLSTROM, C. CECCOBELLO, A. CHAEL, D. O. CHANG, K. CHATTERJEE, S. CHATTERJEE, M. T. CHEN, Y. CHEN, X. CHENG, I. CHO, P. CHRISTIAN, N. S. CONROY, J. E. CONWAY, J. M. CORDES, T. M. CRAWFORD, G. B. CREW, A. CRUZ-OSORIO, Y. CUI, R. DAHALE, J. DAVELAAR, M. DE LAURENTIS, R. DEANE, J. DEMPSEY, G. DESVIGNES, J. DEXTER, V. DHRUV, S. S. DOELEMAN, S. DOUGAL, S. A. DZIB, R. P. EATOUGH, R. EMAMI, H. FALCKE, J. FARAH, E. FOMALONT, H. A. FORD, M. FOSCHI, R. FRAGA-ENCINAS, W. T. FREEMAN, P. FRIBERG, C. M. FROMM, A. FUENTES, P. GALISON, C. F. GAMMIE, R. GARCIA, O. GENTAZ, B. GEORGIEV, C. GODDI, R. GOLD, A. I. GOMEZ-RUIZ, J. L. GOMEZ, M. GU, M. GURWELL, K. HADA, D. HAGGARD, K. HAWORTH, M. H. HECHT, R. HESPER, D. HEUMANN, L. C. HO, P. HO, M. HONMA, C. L. HUANG, L. HUANG, D. H. HUGHES, S. IKEDA, C. M. V. IMPELLIZZERI, M. INOUE, D. J. JAMES, B. T. JANNUZI, B. JETER, W. JAING, A. JIMENEZ-ROSALES, S. JORSTAD, A. V. JOSHI, T. JUNG, M. KARAMI, R. KARUPPUSAMY, T. KAWASHIMA, G. K. KEATING, M. KETTENIS, D-J KIM, J. KIM, J. KIM, M. KINO, J. Y. KOAY, P. KOCHERLAKOTA, Y. KOFUJI, P. M. KOCH, S. KOYAMA, C. KRAMER, J. A. KRAMER, M. KRAMER, C-Y KUO, N. LA BELLA, T. R. LAUER, D. LEE, S-S LEE, P. K. LEUNG, A. LEVIS, Z. LI, R. LICO, G. LINDAHL, M. LINDQVIST, M. LISAKOV, J. LIU, K. LIU, E. LIUZZO, W-P LO, A. P. LOBANOV, L. LOINARD, C. J. LONSDALE, A. E. LOWITZ, R-S LU, N. R. MACDONALD, J. MAO, N. MARCHILI, S. MARKOFF, D. P. MARRONE, A. P. MARSCHER, I. MARTI-VIDAL, S. MATSUSHITA, L. D. MATTHEWS, L. MEDEIROS, K. M. MENTEN, D. MICHALIK, I.. MIZUNO, Y. MIZUNO, J. M. MORAN, K. MORIYAMA, W. MULAUDZI, C. MUELLER, H. MUELLER, A. MUS, G. MUSOKE, A. NADOLSKI, H. NAGAI, N. M. NAGAR, M. NAKAMURA, G. NARAYANAN, I. NATARAJAN, A. NATHANAIL, S. NAVARRO FUENTES, J. NEILSEN, R. NERI, C. NI, A. NOUTSOS, M. A. NOWAK, J. OH, H. OKINO, H. OLIVARES, G. N. ORTIZ-LEON, T. OYAMA, F. OZEL, D. C. M. PALUMBO, J. PARK, H. PARSONS, N. PATEL, U-L PEN, V. PIETU, R. PLAMBECK, A. POPSTEFANIJA, O. PORTH, F. M. POTZL, B. PRATHER, J. A. PRECIADO-LOPEZ, D. PSALTIS, H-Y PU, V. RAMAKRISHNAN, R.. RAO, M. G. RAWLINGS, A. W. RAYMOND, L. REZZOLLA, A. RICARTE, B. RIPPERDA, F. ROELOFS, A. ROGERS, C. ROMERO-CANIZALES, A. ROSHANINESHAT, H. ROTTMANN, A. L. ROY, I. RUIZ, C. RUSZCZYK, K. L. J. RYGL, S. SANCHEZ, D. SANCHEZ-ARGUELLES, M. SANCHEZ-PORTAL, M. SASADA, K. SATAPATHY, T. SAVOLAINEN, F. P. SCHLOERB, J. SCHONFELD, K. SCHUSTER, L. SHAO, Z. SHEN, D. SMALL, B. W. SOHN, J. SOOHOO, L. D. Sosapanta SALAS, K. SOUCCAR, H. SUN, F. TAZAKI, A. J. TETARENKO, P. TIEDE, R. P. J. TILANUS, M. TITUS, P. TORNE, T. TOSCANO, T. TRENT, S. TRIPPE, M. TURK, I. VAN BEMMEL, J. H. VAN LANGEVELDE, R. D. VAN ROSSUM, J. VOS, J. WAGNER, D. WARD-THOMPSON, J. WARDLE, J. E. WASHINGTON, J. WEINTROUB, R. WHARTON, K. WIIK, G. WITZEL, M. F. WONDRAK, G. N. WONG, Q. WU, N. YADLAPALLI, P. YAMAGUCHI, A. YFANTIS, D. YOON, A. YOUNG, K. YOUNG, Z. YOUNSI, W. YU, F. YUAN, Y-F YUAN, S. ZHANG, G. Y. ZHAO and S-S ZHAO. Ordered magnetic fields around the 3C 84 central black hole. ASTRONOMY & ASTROPHYSICS. LES ULIS CEDEX A: EDP SCIENCES S A, 2024, vol. 682, February 2024, p. "L3-1"-"L3-15", 15 pp. ISSN 0004-6361. Available from: https://dx.doi.org/10.1051/0004-6361/202348308.
@article{83202, author = {Paraschos, G. F. and Kim, JandY and Wielgus, Maciek and Roeder, J. and Krichbaum, T. P. and Ros, E. and Agudo, I. and Myserlis, I. and Moscibrodzka, M. and Traianou, E. and Zensus, J. A. and Blackburn, L. and Chan, CandK and Issaoun, S. and Janssen, M. and Johnson, M. D. and Fish, V. L. and Akiyama, K. and Alberdi, A. and Alef, W. and Algaba, J. C. and Anantua, R. and Asada, K. and Azulay, R. and Bach, U. and Baczko, AandK and Ball, D. and Balokovic, M. and Barrett, J. and Baubock, M. and Benson, B. A. and Bintley, D. and Blundell, R. and Bouman, K. L. and Bower, G. C. and Boyce, H. and Bremer, M. and Brinkerink, C. D. and Brissenden, R. and Britzen, S. and Broderick, A. E. and Broguiere, D. and Bronzwaer, T. and Bustamante, S. and Byun, DandY and Carlstrom, J. E. and Ceccobello, C. and Chael, A. and Chang, D. O. and Chatterjee, K. and Chatterjee, S. and Chen, M. T. and Chen, Y. and Cheng, X. and Cho, I. and Christian, P. and Conroy, N. S. and Conway, J. E. and Cordes, J. M. and Crawford, T. M. and Crew, G. B. and CruzandOsorio, A. and Cui, Y. and Dahale, R. and Davelaar, J. and De Laurentis, M. and Deane, R. and Dempsey, J. and Desvignes, G. and Dexter, J. and Dhruv, V. and Doeleman, S. S. and Dougal, S. and Dzib, S. A. and Eatough, R. P. and Emami, R. and Falcke, H. and Farah, J. and Fomalont, E. and Ford, H. A. and Foschi, M. and FragaandEncinas, R. and Freeman, W. T. and Friberg, P. and Fromm, C. M. and Fuentes, A. and Galison, P. and Gammie, C. F. and Garcia, R. and Gentaz, O. and Georgiev, B. and Goddi, C. and Gold, R. and GomezandRuiz, A. I. and Gomez, J. L. and Gu, M. and Gurwell, M. and Hada, K. and Haggard, D. and Haworth, K. and Hecht, M. H. and Hesper, R. and Heumann, D. and Ho, L. C. and Ho, P. and Honma, M. and Huang, C. L. and Huang, L. and Hughes, D. H. and Ikeda, S. and Impellizzeri, C. M. V. and Inoue, M. and James, D. J. and Jannuzi, B. T. and Jeter, B. and Jaing, W. and JimenezandRosales, A. and Jorstad, S. and Joshi, A. V. and Jung, T. and Karami, M. and Karuppusamy, R. and Kawashima, T. and Keating, G. K. and Kettenis, M. and Kim, DandJ and Kim, J. and Kim, J. and Kino, M. and Koay, J. Y. and Kocherlakota, P. and Kofuji, Y. and Koch, P. M. and Koyama, S. and Kramer, C. and Kramer, J. A. and Kramer, M. and Kuo, CandY and La Bella, N. and Lauer, T. R. and Lee, D. and Lee, SandS and Leung, P. K. and Levis, A. and Li, Z. and Lico, R. and Lindahl, G. and Lindqvist, M. and Lisakov, M. and Liu, J. and Liu, K. and Liuzzo, E. and Lo, WandP and Lobanov, A. P. and Loinard, L. and Lonsdale, C. J. and Lowitz, A. E. and Lu, RandS and MacDonald, N. R. and Mao, J. and Marchili, N. and Markoff, S. and Marrone, D. P. and Marscher, A. P. and MartiandVidal, I. and Matsushita, S. and Matthews, L. D. and Medeiros, L. and Menten, K. M. and Michalik, D. and Mizuno, I.. and Mizuno, Y. and Moran, J. M. and Moriyama, K. and Mulaudzi, W. and Mueller, C. and Mueller, H. and Mus, A. and Musoke, G. and Nadolski, A. and Nagai, H. and Nagar, N. M. and Nakamura, M. and Narayanan, G. and Natarajan, I. and Nathanail, A. and Navarro Fuentes, S. and Neilsen, J. and Neri, R. and Ni, C. and Noutsos, A. and Nowak, M. A. and Oh, J. and Okino, H. and Olivares, H. and OrtizandLeon, G. N. and Oyama, T. and Ozel, F. and Palumbo, D. C. M. and Park, J. and Parsons, H. and Patel, N. and Pen, UandL and Pietu, V. and Plambeck, R. and PopStefanija, A. and Porth, O. and Potzl, F. M. and Prather, B. and PreciadoandLopez, J. A. and Psaltis, D. and Pu, HandY and Ramakrishnan, V. and Rao, R.. and Rawlings, M. G. and Raymond, A. W. and Rezzolla, L. and Ricarte, A. and Ripperda, B. and Roelofs, F. and Rogers, A. and RomeroandCanizales, C. and Roshanineshat, A. and Rottmann, H. and Roy, A. L. and Ruiz, I. and Ruszczyk, C. and Rygl, K. L. J. and Sanchez, S. and SanchezandArguelles, D. and SanchezandPortal, M. and Sasada, M. and Satapathy, K. and Savolainen, T. and Schloerb, F. P. and Schonfeld, J. and Schuster, K. and Shao, L. and Shen, Z. and Small, D. and Sohn, B. W. and SooHoo, J. and Salas, L. D. Sosapanta et al.}, article_location = {LES ULIS CEDEX A}, article_number = {February 2024}, doi = {http://dx.doi.org/10.1051/0004-6361/202348308}, keywords = {techniques: high angular resolution;techniques: interferometric;galaxies: active;galaxies: individual: NGC 1275;galaxies: jets}, language = {eng}, issn = {0004-6361}, journal = {ASTRONOMY & ASTROPHYSICS}, title = {Ordered magnetic fields around the 3C 84 central black hole}, url = {https://www.aanda.org/articles/aa/full_html/2024/02/aa48308-23/aa48308-23.html}, volume = {682}, year = {2024} }
TY - JOUR ID - 83202 AU - Paraschos, G. F. - Kim, J-Y - Wielgus, Maciek - Roeder, 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. - Balokovic, M. - Barrett, J. - Baubock, 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. - Garcia, R. - Gentaz, O. - Georgiev, B. - Goddi, C. - Gold, R. - Gomez-Ruiz, A. I. - Gomez, 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. M. V. - Inoue, M. - James, D. J. - Jannuzi, B. T. - Jeter, B. - Jaing, W. - Jimenez-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. - Marti-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. - Mueller, C. - Mueller, 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-Leon, G. N. - Oyama, T. - Ozel, F. - Palumbo, D. C. 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PY - 2024 TI - Ordered magnetic fields around the 3C 84 central black hole JF - ASTRONOMY & ASTROPHYSICS VL - 682 IS - February 2024 SP - "L3-1"-"L3-15" EP - "L3-1"-"L3-15" PB - EDP SCIENCES S A SN - 00046361 KW - techniques: high angular resolution;techniques: interferometric;galaxies: active;galaxies: individual: NGC 1275;galaxies: jets UR - https://www.aanda.org/articles/aa/full_html/2024/02/aa48308-23/aa48308-23.html N2 - 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 gamma(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 di fferent 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 o ffer full imaging capabilities, will shed more light on the compact region of 3C 84. ER -
PARASCHOS, G. F., J-Y KIM, Maciek WIELGUS, J. ROEDER, T. P. KRICHBAUM, E. ROS, I. AGUDO, I. MYSERLIS, M. MOSCIBRODZKA, E. TRAIANOU, J. A. ZENSUS, L. BLACKBURN, C-K CHAN, S. ISSAOUN, M. JANSSEN, M. D. JOHNSON, V. L. FISH, K. AKIYAMA, A. ALBERDI, W. ALEF, J. C. ALGABA, R. ANANTUA, K. ASADA, R. AZULAY, U. BACH, A-K BACZKO, D. BALL, M. BALOKOVIC, J. BARRETT, M. BAUBOCK, B. A. BENSON, D. BINTLEY, R. BLUNDELL, K. L. BOUMAN, G. C. BOWER, H. BOYCE, M. BREMER, C. D. BRINKERINK, R. BRISSENDEN, S. BRITZEN, A. E. BRODERICK, D. BROGUIERE, T. BRONZWAER, S. BUSTAMANTE, D-Y BYUN, J. E. CARLSTROM, C. CECCOBELLO, A. CHAEL, D. O. CHANG, K. CHATTERJEE, S. CHATTERJEE, M. T. CHEN, Y. CHEN, X. CHENG, I. CHO, P. CHRISTIAN, N. S. CONROY, J. E. CONWAY, J. M. CORDES, T. M. CRAWFORD, G. B. CREW, A. CRUZ-OSORIO, Y. CUI, R. DAHALE, J. DAVELAAR, M. DE LAURENTIS, R. DEANE, J. DEMPSEY, G. DESVIGNES, J. DEXTER, V. DHRUV, S. S. DOELEMAN, S. DOUGAL, S. A. DZIB, R. P. EATOUGH, R. EMAMI, H. FALCKE, J. FARAH, E. FOMALONT, H. A. FORD, M. FOSCHI, R. FRAGA-ENCINAS, W. T. FREEMAN, P. FRIBERG, C. M. FROMM, A. FUENTES, P. GALISON, C. F. GAMMIE, R. GARCIA, O. GENTAZ, B. GEORGIEV, C. GODDI, R. GOLD, A. I. GOMEZ-RUIZ, J. L. GOMEZ, M. GU, M. GURWELL, K. HADA, D. HAGGARD, K. HAWORTH, M. H. HECHT, R. HESPER, D. HEUMANN, L. C. HO, P. HO, M. HONMA, C. L. HUANG, L. HUANG, D. H. HUGHES, S. IKEDA, C. M. V. IMPELLIZZERI, M. INOUE, D. J. JAMES, B. T. JANNUZI, B. JETER, W. JAING, A. JIMENEZ-ROSALES, S. JORSTAD, A. V. JOSHI, T. JUNG, M. KARAMI, R. KARUPPUSAMY, T. KAWASHIMA, G. K. KEATING, M. KETTENIS, D-J KIM, J. KIM, J. KIM, M. KINO, J. Y. KOAY, P. KOCHERLAKOTA, Y. KOFUJI, P. M. KOCH, S. KOYAMA, C. KRAMER, J. A. KRAMER, M. KRAMER, C-Y KUO, N. LA BELLA, T. R. LAUER, D. LEE, S-S LEE, P. K. LEUNG, A. LEVIS, Z. LI, R. LICO, G. LINDAHL, M. LINDQVIST, M. LISAKOV, J. LIU, K. LIU, E. LIUZZO, W-P LO, A. P. LOBANOV, L. LOINARD, C. J. LONSDALE, A. E. LOWITZ, R-S LU, N. R. MACDONALD, J. MAO, N. MARCHILI, S. MARKOFF, D. P. MARRONE, A. P. MARSCHER, I. MARTI-VIDAL, S. MATSUSHITA, L. D. MATTHEWS, L. MEDEIROS, K. M. MENTEN, D. MICHALIK, I.. MIZUNO, Y. MIZUNO, J. M. MORAN, K. MORIYAMA, W. MULAUDZI, C. MUELLER, H. MUELLER, A. MUS, G. MUSOKE, A. NADOLSKI, H. NAGAI, N. M. NAGAR, M. NAKAMURA, G. NARAYANAN, I. NATARAJAN, A. NATHANAIL, S. NAVARRO FUENTES, J. NEILSEN, R. NERI, C. NI, A. NOUTSOS, M. A. NOWAK, J. OH, H. OKINO, H. OLIVARES, G. N. ORTIZ-LEON, T. OYAMA, F. OZEL, D. C. M. PALUMBO, J. PARK, H. PARSONS, N. PATEL, U-L PEN, V. PIETU, R. PLAMBECK, A. POPSTEFANIJA, O. PORTH, F. M. POTZL, B. PRATHER, J. A. PRECIADO-LOPEZ, D. PSALTIS, H-Y PU, V. RAMAKRISHNAN, R.. RAO, M. G. RAWLINGS, A. W. RAYMOND, L. REZZOLLA, A. RICARTE, B. RIPPERDA, F. ROELOFS, A. ROGERS, C. ROMERO-CANIZALES, A. ROSHANINESHAT, H. ROTTMANN, A. L. ROY, I. RUIZ, C. RUSZCZYK, K. L. J. RYGL, S. SANCHEZ, D. SANCHEZ-ARGUELLES, M. SANCHEZ-PORTAL, M. SASADA, K. SATAPATHY, T. SAVOLAINEN, F. P. SCHLOERB, J. SCHONFELD, K. SCHUSTER, L. SHAO, Z. SHEN, D. SMALL, B. W. SOHN, J. SOOHOO, L. D. Sosapanta SALAS, K. SOUCCAR, H. SUN, F. TAZAKI, A. J. TETARENKO, P. TIEDE, R. P. J. TILANUS, M. TITUS, P. TORNE, T. TOSCANO, T. TRENT, S. TRIPPE, M. TURK, I. VAN BEMMEL, J. H. VAN LANGEVELDE, R. D. VAN ROSSUM, J. VOS, J. WAGNER, D. WARD-THOMPSON, J. WARDLE, J. E. WASHINGTON, J. WEINTROUB, R. WHARTON, K. WIIK, G. WITZEL, M. F. WONDRAK, G. N. WONG, Q. WU, N. YADLAPALLI, P. YAMAGUCHI, A. YFANTIS, D. YOON, A. YOUNG, K. YOUNG, Z. YOUNSI, W. YU, F. YUAN, Y-F YUAN, S. ZHANG, G. Y. ZHAO and S-S ZHAO. Ordered magnetic fields around the 3C 84 central black hole. \textit{ASTRONOMY \&{}amp; ASTROPHYSICS}. LES ULIS CEDEX A: EDP SCIENCES S A, 2024, vol.~682, February 2024, p.~''L3-1''-''L3-15'', 15 pp. ISSN~0004-6361. Available from: https://dx.doi.org/10.1051/0004-6361/202348308.