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-institutet

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-institutet

M. Perucho

Universitat de Valencia

T. P. Krichbaum

Max Planck-institutet

M. Bock

Max Planck-institutet

M. Bremer

Institut de RadioAstronomie Millimetrique (IRAM)

C. Grossberger

Friedrich-Alexander-Universität Erlangen Nurnberg (FAU)

Julius-Maximilians Universität Würzburg

Max Planck-institutet

Michael Lindqvist

Chalmers, Rymd- och geovetenskap, Onsala rymdobservatorium

A. P. Lobanov

Universität Hamburg

Max Planck-institutet

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-institutet

Astronomy and Astrophysics

0004-6361 (ISSN) 1432-0746 (eISSN)

Vol. 593 A47

Ämneskategorier

Astronomi, astrofysik och kosmologi

DOI

10.1051/0004-6361/201527951