GMVA19A-224

Imaging Magnetic Acceleration and Collimation of M87 Jet at Scales of 7-150Rs

Abstract

Understanding the processes of jet formation in supermassive black holes (SMBH) is a central quest in astrophysics. The radio galaxy M87 contains the nearest/largest active SMBH, offering the best opportunity for probing the jet-production site. Here we propose an ultra-deep GMVA observation of M87 along with the large EHT campaign planned in April 2019. While the EHT is sensitive to the emission near SMBH, the GMVA allows us to image the scales of initial jet collimation/acceleration, bridging the gap between the SMBH and large-scale jet. By pairing the 2018/2019 campaign data, we aim to: (1) obtain firm evidence for the persistence of magnetic-field configuration in the initial jet acceleration region; (2) probe dynamic jet structures in the regions generating active magnetized knots; and (3) deeply image a recently-discovered novel jet feature that may offer evidence for a Blandford&Znajek jet. These are critical to test whether the highly-magnetized BH-powered scenario plays a dominant role or not in producing a powerful jet. We plan to add the Greenland Telescope(+LMT if possible), which will greatly enhance the N-S resolution/uv-coverage, thus make the 2019 GMVA data unique. The 3mm data would also be crucial to help calibrate and interpret the corresponding EHT 1mm data.

Investigators

Name	Institution
Tony Zensus	National Radio Astronomy Observatory; Max-Planck-Institut für Radioastronomie
John Wardle	Brandeis University
Pablo de Vicente	Yebes, Centro Astronómico de
Hotaka Shiokawa	Center for Astrophysics | Harvard & Smithsonian
zhi-qiang shen	Shanghai Astronomical Observatory, CAS
Karl Schuster	Institut de Radio Astronomique Millimétrique
Tuomas Savolainen	Max-Planck-Institut für Radioastronomie; Aalto yliopisto
Helge Rottmann	Max-Planck-Institut für Radioastronomie
Eduardo Ros	Max-Planck-Institut für Radioastronomie; València, Universitat de
Hung-Yi Pu	Perimeter Institute for Theoretical Physics
Oliver Porth	Amsterdam, Universiteit van; Frankfurt am Main, Goethe-Universität
Yurii Pidopryhora	Max-Planck-Institut für Radioastronomie
Monica Orienti	Istituto Nazionale di Astrofisica; Bologna, Università degli Studi di
Scott Noble	Tulsa, University of
Gopal Narayanan	Massachusetts at Amherst, University of
Hiroshi Nagai	National Astronomical Observatory of Japan ; Japan Aerospace Exploration Agency
Yosuke Mizuno	Shanghai Jiao Tong University; Frankfurt am Main, Goethe-Universität
Shin Mineshige	Kyoto University
Monika Moscibrodzka	Nijmegen, Radboud Universiteit
Hugo Messias	Joint ALMA Observatory
Jonathan McKinney	Maryland, University of
Satoki Matsushita	Academia Sinica
Alan Marscher	Boston University
Ivan Marti-Vidal	València, Universitat de
Sera Markoff	Amsterdam, Universiteit van
Andrei Lobanov	Max-Planck-Institut für Radioastronomie
Michael Lindqvist	Chalmers University of Technology
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
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
Ruben Herrero-Illana	European Southern Observatory
Marcello Giroletti	Istituto Nazionale di Astrofisica
Jose L. Gomez	Andalucía, Instituto de Astrofísica de
Gabriele Giovannini	Istituto Nazionale di Astrofisica
Vincent Fish	Haystack Observatory
Heino Falcke	Netherlands Institute for Radio Astronomy; Nijmegen, Radboud Universiteit
Akihiro Doi	Japan Aerospace Exploration Agency
Shep Doeleman	Haystack Observatory
Geoffrey Crew	Massachusetts Institute of 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
Lindy Blackburn	Center for Astrophysics | Harvard & Smithsonian
Rebecca Azulay	València, Universitat de
Walter Alef	Max-Planck-Institut für Radioastronomie
Kazunori Akiyama	Massachusetts Institute of Technology; Haystack Observatory
Keiichi Asada	Academia Sinica
Thomas Krichbaum	Max-Planck-Institut für Radioastronomie
Rusen Lu	Max-Planck-Institut für Radioastronomie; Shanghai Astronomical Observatory, CAS
Masanori Nakamura	Academia Sinica; National Institute of Technology, Hachinohe College
Jae-Young Kim	Max-Planck-Institut für Radioastronomie; Kyungpook National University
Kazuhiro Hada *	Istituto Nazionale di Astrofisica; National Astronomical Observatory of Japan
GBT Operator	Green Bank Observatory

* indicates the PI