GMVA25B-200
Probing the dynamic jet-disk connection in M87 during the 2026 EHT campaign
Abstract
Recent EHT imaging of the M87 black hole (BH) has opened a new window for investigating BH astrophysics and testing general relativity. However, accurately distinguishing the properties of accretion and jet physics from spacetime remains a challenge. Our recent GMVA+ALMA observations revealed a jet emerging from a bright emission ring, enhancing our understanding of the ring-like structure surrounding the BH and the jet's origin. Here, we propose new polarization-sensitive GMVA+ALMA observations of M87 to explore the dynamic connection between the ring and the jet. These 3.5mm observations, planned to complement the 2026 EHT 1.3mm movie campaign, will provide spatially resolved total and polarized emission images of the ring-jet complex. This will complement the planned EHT and HSA monitoring efforts to establish a seamless link between the horizon-scale structure and the jet's dynamic evolution. These observations will also extend GMVA time coverage of M87 into 2026, facilitating the study of the long-term variability of the ring and jet. Furthermore, combined with the 1.3 mm imaging, the spectral index and rotation measure will allow us to separate the accretion inflow from the
jet outflow, providing stronger constraints for GRMHD modeling and our understanding of the electromagnetic energy extraction mechanism.
Investigators
| Name | Institution |
|---|---|
| GBT Operator | Green Bank Observatory |
| Rusen Lu * | Max-Planck-Institut für Radioastronomie; Shanghai Astronomical Observatory, CAS |
| Thomas Krichbaum | Max-Planck-Institut für Radioastronomie |
| Jae-Young Kim | Max-Planck-Institut für Radioastronomie; Ulsan National Institute of Science and Technology |
| Xi Yan | Xinjiang Astronomical Observatory, CAS |
| Yuzhu Cui | Central China Normal University |
| Andrei Lobanov | Max-Planck-Institut für Radioastronomie |
| Eduardo Ros | Max-Planck-Institut für Radioastronomie; València, Universitat de |
| Keiichi Asada | Academia Sinica |
| Masanori Nakamura | Academia Sinica; National Institute of Technology, Hachinohe College |
| Jongho Park | Kyung Hee University |
| Hung-Yi Pu | Perimeter Institute for Theoretical Physics |
| Kazuhiro Hada | Istituto Nazionale di Astrofisica; National Astronomical Observatory of Japan ; Nagoya City University |
| Kazunori Akiyama | Massachusetts Institute of Technology; Haystack Observatory |
| Jose L. Gomez | Andalucía, Instituto de Astrofísica de |
| Tomohisa Kawashima | Tokyo, University of |
| Ivan Marti-Vidal | València, Universitat de |
| Fumie Tazaki | National Astronomical Observatory of Japan ; Tokyo Electron Technology Solutions Ltd. |
| Sang-Sung Lee | Korea Astronomy and Space Science Institute |
| Hiroshi Nagai | National Astronomical Observatory of Japan ; Japan Aerospace Exploration Agency |
| Feng Yuan | Shanghai Astronomical Observatory, CAS |
| Uwe Bach | Max-Planck-Institut für Radioastronomie |
| Lindy Blackburn | Center for Astrophysics | Harvard & Smithsonian |
| Katherine Bouman | Massachusetts Institute of Technology; California Institute of Technology |
| Geoffrey Bower | Academia Sinica |
| Silke Britzen | Max-Planck-Institut für Radioastronomie |
| Michael Bremer | Institut de Radio Astronomique Millimétrique |
| Avery Broderick | Waterloo, University of |
| Sunil Chandra | North-West University |
| Ilje Cho | Korea Astronomy and Space Science Institute; Andalucía, Instituto de Astrofísica de; Korea University of Science and Technology |
| Geoffrey Crew | Massachusetts Institute of Technology |
| Shep Doeleman | Center for Astrophysics | Harvard & Smithsonian |
| Akihiro Doi | Japan Aerospace Exploration Agency |
| Heino Falcke | Netherlands Institute for Radio Astronomy; Nijmegen, Radboud Universiteit |
| Jordy Davelaar | Columbia University |
| Vincent Fish | Haystack Observatory |
| Gabriele Giovannini | Istituto Nazionale di Astrofisica |
| Marcello Giroletti | Istituto Nazionale di Astrofisica |
| Paul Ho | Academia Sinica; East Asian Observatory |
| Mareki Honma | National Astronomical Observatory of Japan |
| David Hughes | Astrofísica, Óptica y Electrónica, Instituto Nacional de |
| Violette Impellizzeri | National Radio Astronomy Observatory; Leiden, University of; Joint ALMA Observatory |
| Makoto Inoue | Academia Sinica |
| Sara Issaoun | Center for Astrophysics | Harvard & Smithsonian; Nijmegen, Radboud Universiteit |
| Michael Janssen | Max-Planck-Institut für Radioastronomie; Nijmegen, Radboud Universiteit |
| Wu Jiang | Shanghai Astronomical Observatory, CAS |
| Michael Johnson | California at Santa Barbara, University of; Center for Astrophysics | Harvard & Smithsonian |
| Motoki Kino | National Astronomical Observatory of Japan ; Korea Astronomy and Space Science Institute |
| Shoko Koyama | National Astronomical Observatory of Japan ; Academia Sinica |
| Noemi La Bella | Nijmegen, Radboud Universiteit |
| Michael Lindqvist | Chalmers University of Technology |
| Elisabetta Liuzzo | Istituto Nazionale di Astrofisica |
| Laurent Loinard | México, Universidad Nacional Autónoma de; Harvard University |
| Nicholas MacDonald | Boston University; Max-Planck-Institut für Radioastronomie; Mississippi, University of |
| Sera Markoff | Amsterdam, Universiteit van |
| Alan Marscher | Boston University |
| Satoki Matsushita | Academia Sinica |
| Hugo Messias | Joint ALMA Observatory |
| Lynn Matthews | Haystack Observatory; Center for Astrophysics | Harvard & Smithsonian |
| Shin Mineshige | Kyoto University |
| Yosuke Mizuno | Shanghai Jiao Tong University; Frankfurt am Main, Goethe-Universität |
| Monika Moscibrodzka | Nijmegen, Radboud Universiteit |
| Gopal Narayanan | Massachusetts Amherst, University of |
| Monica Orienti | Istituto Nazionale di Astrofisica; Bologna, Universita degli Studi di |
| Sijia Peng | Shanghai Astronomical Observatory, CAS; Nanjing University |
| Oliver Porth | Amsterdam, Universiteit van; Frankfurt am Main, Goethe-Universität |
| Luciano Rezzolla | Frankfurt am Main, Goethe-Universität |
| Helge Rottmann | Max-Planck-Institut für Radioastronomie |
| Kazi Rygl | Istituto Nazionale di Astrofisica |
| David Sanchez-Arguelles | Astrofísica, Óptica y Electrónica, Instituto Nacional de |
| Tuomas Savolainen | Max-Planck-Institut für Radioastronomie; Aalto yliopisto |
| Karl Schuster | Institut de Radio Astronomique Millimétrique |
| zhi-qiang shen | Shanghai Astronomical Observatory, CAS |
| Kenji Toma | Tohoku University |
| Pablo de Vicente | Yebes, Centro Astronómico de |
| John Wardle | Brandeis University |
| Maciek Wielgus | Max-Planck-Institut für Radioastronomie; Smithsonian Astrophysical Observatory |
| Tony Zensus | National Radio Astronomy Observatory; Max-Planck-Institut für Radioastronomie |
| Philip Edwards | Australia Telescope National Facility |
| Jamie Stevens | Australia Telescope National Facility |
| Do-Young Byun | Korea Astronomy and Space Science Institute |
| Taehyun Jung | Korea Astronomy and Space Science Institute |
| Deokhyeong Lee | Ulsan National Institute of Science and Technology |
| Chris Phillips | Australia Telescope National Facility |
| Jan Wagner | Max-Planck-Institut für Radioastronomie |
| Rocco Lico | Istituto Nazionale di Astrofisica; Max-Planck-Institut für Radioastronomie; Andalucía, Instituto de Astrofísica de |
| Paul Tiede | Center for Astrophysics | Harvard & Smithsonian |
| Alexander Plavin | Harvard University |
* indicates the PI