Millimeter-VLBI Observations of Low-luminosity Active Galactic Nuclei with Source-frequency Phase Referencing
Millimeter-VLBI Observations of Low-luminosity Active Galactic Nuclei with Source-frequency Phase Referencing
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利用源频率相位参考对低光度活动星系核进行毫米级 VLBI 观测
DOI：
10.3847/2041-8213/ac375c
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发表时间：
2021-11
影响因子：
7.9
通讯作者：
Noriyuki Kawaguchi
中科院分区：
文献类型：
--
作者：
江悟;沈志强;Ivan Mati-Vidal;王学正;蒋栋荣;Noriyuki Kawaguchi
我们报告毫米VLBI结果低光度活动星系核（M84和M87）高达88 GHz的源频率相位参考观测。我们探测到了弱VLBI核，并在88 GHz获得了M84的第一张图像。M84核心的亮度温度约为7.2 × 109 K，这可以作为一个下限，因为在我们88 GHz的观测中，核心的史瓦西半径小于30仍然是无法解决的。利用源频相位参考技术成功地测量了M87在22-44 GHz和44-88 GHz的核位移。M87的喷流顶点位于43 GHz核心上游的约46 μ s处。估计M87 88 GHz核心的磁场强度为4.8 ± 2.4 G，与事件视界望远镜探测到的事件视界附近的1-30 G量级相同。
We report millimeter-VLBI results of low-luminosity active galactic nuclei (M84 and M87) up to 88 GHz with source-frequency phase-referencing observations. We detected the weak VLBI core and obtained the first image of M84 at 88 GHz. The derived brightness temperature of the M84 core was about 7.2 × 109 K, which could serve as a lower limit because the core down to 30 Schwarzschild radii was still unresolved in our 88 GHz observations. We successfully determined the core shifts of M87 at 22–44 GHz and 44–88 GHz through the source-frequency phase-referencing technique. The jet apex of M87 could be deduced at ∼46 μas upstream of the 43 GHz core from core-shift measurements. The estimated magnetic field strength of the 88 GHz core of M87 is 4.8 ± 2.4 G, which is at the same magnitude of 1–30 G near the event horizon probed by the Event Horizon Telescope.
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DOI：
10.1111/j.1365-2966.2009.15428.x
发表时间：
2009-07
影响因子：
4.8
作者：
S. O’Sullivan;D. Gabuzda
通讯作者：
S. O’Sullivan;D. Gabuzda
DOI：
10.22323/1.399.0043
发表时间：
2021-10
期刊：
Proceedings of European VLBI Network Mini-Symposium and Users' Meeting 2021 — PoS(EVN2021)
影响因子：
--
作者：
G. Paraschos;Jae-Young Kim;T. Krichbaum;J. Oh;J. Hodgson;M. Gurwell;J. Zensus
通讯作者：
G. Paraschos;Jae-Young Kim;T. Krichbaum;J. Oh;J. Hodgson;M. Gurwell;J. Zensus
DOI：
10.1088/0004-6256/147/6/143
发表时间：
2014-03
期刊：
The Astronomical Journal
影响因子：
--
作者：
T. Hovatta;M. Aller;H. Aller;E. Clausen-Brown;D. Homan;Y. Kovalev;M. Lister;A. Pushkarev;
通讯作者：
T. Hovatta;M. Aller;H. Aller;E. Clausen-Brown;D. Homan;Y. Kovalev;M. Lister;A. Pushkarev;
影响因子：
4.8
作者：
R. Nemmen;T. Storchi-Bergmann;M. Eracleous
通讯作者：
R. Nemmen;T. Storchi-Bergmann;M. Eracleous
DOI：
10.3847/2041-8213/abef71
发表时间：
2021-04
期刊：
--
影响因子：
--
作者：
J. Algaba;J. Anczarski;K. Asada;M. Balokovi;S. Chandra;Y.-Z. Cui;A. Falcone;M. Giroletti;C. Goddi;K. Hada;D. Haggard;S. Jorstad;A. Kaur;T. Kawashima;G. Keating;J. Kim;M. Kino;E. Kravchenko;M. Lucchini;S. Markoff;J. Neilsen;M. A. Nowak;J. Park;G. Principe;V. Ramakrishnan;M. T. Reynolds;M. Sasada;K. Akiyama;A. Alberdi;W. Alef;R. Anantua;R. Azulay;A. Baczko;D. Ball;J. Barrett;D. Bintley;B. Benson;L. Blackburn;R. Blundell;W. Boland;K. Bouman;G. Bower;H. Boyce;M. Bremer;C. Brinkerink;R. Brissenden;S. Britzen;A. Broderick;D. Broguiere;T. Bronzwaer;D. Byun;J. Carlstrom;A. Chael;Chi-kwan Chan;S. Chatterjee;K. Chatterjee;Ming-Tang Chen;P. Chesler;I. Cho;P. Christian;J. Conway;J. Cordes;T. Crawford;A. Cruz-Osorio;J. Davelaar;M. Laurentis;R. Deane;J. Dempsey;G. Desvignes;J. Dexter;S. Doeleman;R. Eatough;H. Falcke;J. Farah;V. Fish;E. Fomalont;H. Ford;R. Fraga-Encinas;P. Friberg;C. Fromm;A. Fuentes;P. Galison;C. Gammie;Roberto García;O. Gentaz;B. Georgiev;R. Gold;J. Gómez;M. Gurwell;M. H. Hecht;R. Hesper;P. Ho;M. Honma;Chih-Wei L. Huang;David H. Hughes;Shiro Ikeda;M. Inoue;S. Issaoun;D. J. James;B. Jannuzi;M. Janssen;B. Jeter;A. Jiménez-Rosales;Michael D. Johnson;T. Jung;M. Karami;R. Karuppusamy;M. Kettenis;Dong-Jin Kim;Jongsoo Kim;Junhan Kim;J. Koay;Y. Kofuji;P. Koch;S. Koyama;M. Kramer;C. Kramer;C. Kuo;T. Lauer;A. Levis;M. Lindqvist;R. Lico;G. Lindahl;Kuo Liu;E. Liuzzo;Wen-Ping Lo;A. Lobanov;L. Loinard;C. Lonsdale;N. MacDonald;N. Marchili;D. Marrone;A. Marscher;I. Martí-Vidal;S. Matsushita;L. Matthews;L. Medeiros;K. Menten;I. Mizuno;Y. Mizuno;J. M. Moran;Kotaro Moriyama;M. Mościbrodzka;C. Müller;G. Musoke;A. Mejías;H. Nagai;M. Nakamura;Ramesh Narayan;G. Narayanan;I. Natarajan;A. Nathanail;R. Neri;C. Ni;A. Noutsos;H. Okino;H. Olivares;G. Ortiz-Léon;T. Oyama;F. Özel;D. Palumbo;N. Patel;D. Pesce;V. Piétu;R. Plambeck;A. PopStefanija;O. Porth;F. M. Pötzl;B. Prather;J. A. Preciado-López;D. Psaltis;Hung-Yi Pu;R. Rao;M. Rawlings;A. Raymond;L. Rezzolla;Angelo Ricarte;B. Ripperda;F. Roelofs;Alan Rogers;E. Ros;M. Rose;A. Roshanineshat;H. Rottmann;A. Roy;C. Ruszczyk;K. Rygl;S. Sánchez;D. Sánchez-Arguelles;T. Savolainen;F. Schloerb;K. Schuster;Lijing Shao;B. Sohn;J. SooHoo;F. Tazaki;A. Tetarenko;P. Tiede;R. Tilanus;M. Titus;K. Toma;P. Torne;T. Trent;E. Traianou;S. Trippe;H. V. Langevelde;D. V. Rossum;J. Wagner;D. Ward-Thompson;J. Wardle;J. Weintroub;N. Wex;R. Wharton;M. Wielgus;G. Wong;A. Young;K. Young;Guangyao Zhao;F. Aharonian;E. Angüner;C. Arcaro;C. Armand;T. Armstrong;H. Ashkar;Michael Backes;V. Baghmanyan;V. B. Martins;A. Barnacka;M. Barnard;Y. Becherini;D. Berge;K. Bernlöhr;J. Bolmont;M. Breuhaus;F. Brun;P. Brun;M. Bryan;M. Büchele;T. Bulik;T. Bylund
通讯作者：
J. Algaba;J. Anczarski;K. Asada;M. Balokovi;S. Chandra;Y.-Z. Cui;A. Falcone;M. Giroletti;C. Goddi;K. Hada;D. Haggard;S. Jorstad;A. Kaur;T. Kawashima;G. Keating;J. Kim;M. Kino;E. Kravchenko;M. Lucchini;S. Markoff;J. Neilsen;M. A. Nowak;J. Park;G. Principe;V. Ramakrishnan;M. T. Reynolds;M. Sasada;K. Akiyama;A. Alberdi;W. Alef;R. Anantua;R. Azulay;A. Baczko;D. Ball;J. Barrett;D. Bintley;B. Benson;L. Blackburn;R. Blundell;W. Boland;K. Bouman;G. Bower;H. Boyce;M. Bremer;C. Brinkerink;R. Brissenden;S. Britzen;A. Broderick;D. Broguiere;T. Bronzwaer;D. Byun;J. Carlstrom;A. Chael;Chi-kwan Chan;S. Chatterjee;K. Chatterjee;Ming-Tang Chen;P. Chesler;I. Cho;P. Christian;J. Conway;J. Cordes;T. Crawford;A. Cruz-Osorio;J. Davelaar;M. Laurentis;R. Deane;J. Dempsey;G. Desvignes;J. Dexter;S. Doeleman;R. Eatough;H. Falcke;J. Farah;V. Fish;E. Fomalont;H. Ford;R. Fraga-Encinas;P. Friberg;C. Fromm;A. Fuentes;P. Galison;C. Gammie;Roberto García;O. Gentaz;B. Georgiev;R. Gold;J. Gómez;M. Gurwell;M. H. Hecht;R. Hesper;P. Ho;M. Honma;Chih-Wei L. Huang;David H. Hughes;Shiro Ikeda;M. Inoue;S. Issaoun;D. J. James;B. Jannuzi;M. Janssen;B. Jeter;A. Jiménez-Rosales;Michael D. Johnson;T. Jung;M. Karami;R. Karuppusamy;M. Kettenis;Dong-Jin Kim;Jongsoo Kim;Junhan Kim;J. Koay;Y. Kofuji;P. Koch;S. Koyama;M. Kramer;C. Kramer;C. Kuo;T. Lauer;A. Levis;M. Lindqvist;R. Lico;G. Lindahl;Kuo Liu;E. Liuzzo;Wen-Ping Lo;A. Lobanov;L. Loinard;C. Lonsdale;N. MacDonald;N. Marchili;D. Marrone;A. Marscher;I. Martí-Vidal;S. Matsushita;L. Matthews;L. Medeiros;K. Menten;I. Mizuno;Y. Mizuno;J. M. Moran;Kotaro Moriyama;M. Mościbrodzka;C. Müller;G. Musoke;A. Mejías;H. Nagai;M. Nakamura;Ramesh Narayan;G. Narayanan;I. Natarajan;A. Nathanail;R. Neri;C. Ni;A. Noutsos;H. Okino;H. Olivares;G. Ortiz-Léon;T. Oyama;F. Özel;D. Palumbo;N. Patel;D. Pesce;V. Piétu;R. Plambeck;A. PopStefanija;O. Porth;F. M. Pötzl;B. Prather;J. A. Preciado-López;D. Psaltis;Hung-Yi Pu;R. Rao;M. Rawlings;A. Raymond;L. Rezzolla;Angelo Ricarte;B. Ripperda;F. Roelofs;Alan Rogers;E. Ros;M. Rose;A. Roshanineshat;H. Rottmann;A. Roy;C. Ruszczyk;K. Rygl;S. Sánchez;D. Sánchez-Arguelles;T. Savolainen;F. Schloerb;K. Schuster;Lijing Shao;B. Sohn;J. SooHoo;F. Tazaki;A. Tetarenko;P. Tiede;R. Tilanus;M. Titus;K. Toma;P. Torne;T. Trent;E. Traianou;S. Trippe;H. V. Langevelde;D. V. Rossum;J. Wagner;D. Ward-Thompson;J. Wardle;J. Weintroub;N. Wex;R. Wharton;M. Wielgus;G. Wong;A. Young;K. Young;Guangyao Zhao;F. Aharonian;E. Angüner;C. Arcaro;C. Armand;T. Armstrong;H. Ashkar;Michael Backes;V. Baghmanyan;V. B. Martins;A. Barnacka;M. Barnard;Y. Becherini;D. Berge;K. Bernlöhr;J. Bolmont;M. Breuhaus;F. Brun;P. Brun;M. Bryan;M. Büchele;T. Bulik;T. Bylund