A highly magnetized twin-jet base pinpoints a supermassive black hole
Artikel i vetenskaplig tidskrift, 2016
Supermassive black holes (SMBH) are essential for the production of jets in radio-loud active galactic nuclei (AGN). Theoretical models based on (Blandford & Znajek 1977, MNRAS, 179, 433) extract the rotational energy from a Kerr black hole, which could be the case for NGC1052, to launch these jets. This requires magnetic fields on the order of 10(3) G to 10(4) G. We imaged the vicinity of the SMBH of the AGN NGC1052 with the Global Millimetre VLBI Array and found a bright and compact central feature that is smaller than 1.9 light days (100 Schwarzschild radii) in radius. Interpreting this as a blend of the unresolved jet bases, we derive the magnetic field at 1 Schwarzschild radius to lie between 200 G and similar to 8.3 x 10(4) G consistent with Blandford & Znajek models.
magnetic fields
galaxies: magnetic fields
galaxies: jets
galaxies: active
galaxies: nuclei
Författare
A. K. Baczko
Max-Planck-Gesellschaft
Julius-Maximilians Universität Würzburg
Friedrich-Alexander-Universität Erlangen Nurnberg (FAU)
R. Schulz
Julius-Maximilians Universität Würzburg
Netherlands Institute for Radio Astronomy (ASTRON)
Friedrich-Alexander-Universität Erlangen Nurnberg (FAU)
M. Kadler
Julius-Maximilians Universität Würzburg
Eduardo Ros
Universitat de Valencia
Max-Planck-Gesellschaft
M. Perucho
Universitat de Valencia
T. P. Krichbaum
Max-Planck-Gesellschaft
M. Bock
Max-Planck-Gesellschaft
M. Bremer
Institut de Radioastronomie Millimétrique (IRAM)
C. Grossberger
Friedrich-Alexander-Universität Erlangen Nurnberg (FAU)
Julius-Maximilians Universität Würzburg
Max-Planck-Gesellschaft
Michael Lindqvist
Chalmers, Rymd- och geovetenskap, Onsala rymdobservatorium
A. P. Lobanov
Universität Hamburg
Max-Planck-Gesellschaft
K. Mannheim
Julius-Maximilians Universität Würzburg
Ivan Marti-Vidal
Chalmers, Rymd- och geovetenskap, Onsala rymdobservatorium
C. Muller
Julius-Maximilians Universität Würzburg
Radboud Universiteit
Friedrich-Alexander-Universität Erlangen Nurnberg (FAU)
J. Wilms
Friedrich-Alexander-Universität Erlangen Nurnberg (FAU)
A.J. Zensus
Max-Planck-Gesellschaft
Astronomy and Astrophysics
0004-6361 (ISSN) 1432-0746 (eISSN)
Vol. 593 A47Ämneskategorier
Astronomi, astrofysik och kosmologi
DOI
10.1051/0004-6361/201527951