GMVA23B-067
Peering into M87's black hole in multiple colors
Abstract
Recent EHT observations of M87 have revealed a ring-like structure at 1.3mm near the event horizon. The structure was interpreted as a photon ring surrounding a dark shadow caused by gravitational light bending and photon capture at the event horizon. The origin of the ring, however, needs to be better understood. The observed ring may also be the result of photons that are not entirely bound by black hole's gravity, such as those emitted by plasma located at a distance from the photon-capture radius. Our recent GMVA+ALMA observation of M87 suggest that a ring-like structure may also exist at 3mm. We propose new observations of M87 with GMVA+ALMA at 7/3mm, which should be conducted in close proximity to EHT observations at 1.3/0.9mm. We will be able to obtain a multicolored (3/1.3/0.9mm) view of the black hole environment for the first time, allowing us to investigate the origin of the ring and the physical properties of plasmas within the innermost accretion flows and jets. Furthermore, we propose to locate the 7mm VLBI core with respect to the black hole, attempting to determine whether the core represents the outer parts of the accretion flows or is a tau=1 surface of the jet.
Investigators
| Name | Institution |
|---|---|
| Jan Wagner | Max-Planck-Institut für Radioastronomie |
| Chris Phillips | Australia Telescope National Facility |
| Sang-Sung Lee | Korea Astronomy and Space Science Institute |
| Taehyun Jung | Korea Astronomy and Space Science Institute |
| Do-Young Byun | Korea Astronomy and Space Science Institute |
| Jamie Stevens | Australia Telescope National Facility |
| Philip Edwards | Australia Telescope National Facility |
| Tony Zensus | National Radio Astronomy Observatory; Max-Planck-Institut für Radioastronomie |
| Maciek Wielgus | Max-Planck-Institut für Radioastronomie; Smithsonian Astrophysical Observatory |
| John Wardle | Brandeis University |
| Pablo de Vicente | Yebes, Centro Astronómico de |
| Kenji Toma | Tohoku University |
| zhi-qiang shen | Shanghai Astronomical Observatory, CAS |
| Karl Schuster | Institut de Radio Astronomique Millimétrique |
| Tuomas Savolainen | Max-Planck-Institut für Radioastronomie; Aalto yliopisto |
| David Sanchez-Arguelles | Astrofísica, Óptica y Electrónica, Instituto Nacional de |
| Kazi Rygl | Istituto Nazionale di Astrofisica |
| Helge Rottmann | Max-Planck-Institut für Radioastronomie |
| Eduardo Ros | Max-Planck-Institut für Radioastronomie; València, Universitat de |
| Luciano Rezzolla | Frankfurt am Main, Goethe-Universität |
| Oliver Porth | Amsterdam, Universiteit van; Frankfurt am Main, Goethe-Universität |
| Monica Orienti | Istituto Nazionale di Astrofisica; Bologna, Universita degli Studi di |
| Gopal Narayanan | Massachusetts at Amherst, University of |
| Hiroshi Nagai | National Astronomical Observatory of Japan ; Japan Aerospace Exploration Agency |
| Monika Moscibrodzka | Nijmegen, Radboud Universiteit |
| Yosuke Mizuno | Shanghai Jiao Tong University; Frankfurt am Main, Goethe-Universität |
| Shin Mineshige | Kyoto University |
| Lynn Matthews | Haystack Observatory; Center for Astrophysics | Harvard & Smithsonian |
| Hugo Messias | Joint ALMA Observatory |
| Satoki Matsushita | Academia Sinica |
| Alan Marscher | Boston University |
| Sera Markoff | Amsterdam, Universiteit van |
| Nicholas MacDonald | Boston University; Max-Planck-Institut für Radioastronomie; Mississippi, University of |
| Laurent Loinard | México, Universidad Nacional Autónoma de |
| Elisabetta Liuzzo | Istituto Nazionale di Astrofisica |
| Michael Lindqvist | Chalmers University of Technology |
| Noemi La Bella | Nijmegen, Radboud Universiteit |
| Shoko Koyama | National Astronomical Observatory of Japan ; Academia Sinica |
| Motoki Kino | National Astronomical Observatory of Japan ; Korea Astronomy and Space Science Institute |
| Michael Johnson | California at Santa Barbara, University of; Center for Astrophysics | Harvard & Smithsonian |
| Wu Jiang | Shanghai Astronomical Observatory, CAS |
| Michael Janssen | Max-Planck-Institut für Radioastronomie; Nijmegen, Radboud Universiteit |
| David James | Smithsonian Astrophysical Observatory |
| Sara Issaoun | Center for Astrophysics | Harvard & Smithsonian; Nijmegen, Radboud Universiteit |
| Makoto Inoue | Academia Sinica |
| Violette Impellizzeri | National Radio Astronomy Observatory; Leiden, University of; Joint ALMA Observatory |
| David Hughes | Astrofísica, Óptica y Electrónica, Instituto Nacional de |
| Mareki Honma | National Astronomical Observatory of Japan |
| Paul Ho | Academia Sinica; East Asian Observatory |
| Marcello Giroletti | Istituto Nazionale di Astrofisica |
| Gabriele Giovannini | Istituto Nazionale di Astrofisica |
| Vincent Fish | Haystack Observatory |
| Jordy Davelaar | Columbia University |
| Heino Falcke | Netherlands Institute for Radio Astronomy; Nijmegen, Radboud Universiteit |
| Akihiro Doi | Japan Aerospace Exploration Agency |
| Shep Doeleman | Center for Astrophysics | Harvard & Smithsonian |
| Yuzhu Cui | Zhejiang Lab |
| Geoffrey Crew | Massachusetts Institute of Technology |
| Ilje Cho | Korea Astronomy and Space Science Institute; Andalucía, Instituto de Astrofísica de; Korea University of Science and Technology |
| Sunil Chandra | North-West University |
| Avery Broderick | Waterloo, University of |
| Michael Bremer | Institut de Radio Astronomique Millimétrique |
| Silke Britzen | Max-Planck-Institut für Radioastronomie |
| Geoffrey Bower | Academia Sinica |
| Katherine Bouman | Massachusetts Institute of Technology; California Institute of Technology |
| Lindy Blackburn | Center for Astrophysics | Harvard & Smithsonian |
| Uwe Bach | Max-Planck-Institut für Radioastronomie |
| Feng Yuan | Shanghai Astronomical Observatory, CAS |
| Fumie Tazaki | National Astronomical Observatory of Japan ; Tokyo Electron Technology Solutions Ltd. |
| Ivan Marti-Vidal | València, Universitat de |
| Andrei Lobanov | Max-Planck-Institut für Radioastronomie |
| Tomohisa Kawashima | Tokyo, University of |
| Jose L. Gomez | Andalucía, Instituto de Astrofísica de |
| Kazunori Akiyama | Massachusetts Institute of Technology; Haystack Observatory |
| Thomas Krichbaum | Max-Planck-Institut für Radioastronomie |
| Jae-Young Kim | Max-Planck-Institut für Radioastronomie; Kyungpook National University |
| Kazuhiro Hada | Istituto Nazionale di Astrofisica; National Astronomical Observatory of Japan ; Nagoya City University |
| Hung-Yi Pu | Perimeter Institute for Theoretical Physics |
| Masanori Nakamura | Academia Sinica; National Institute of Technology, Hachinohe College |
| Keiichi Asada | Academia Sinica |
| Rusen Lu | Max-Planck-Institut für Radioastronomie; Shanghai Astronomical Observatory, CAS |
| Jongho Park * | Kyung Hee University |
* indicates the PI