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A highly magnetized twin-jet base pinpoints a supermassive black hole

A. K. Baczko ; R. Schulz ; M. Kadler ; E. Ros ; M. Perucho ; T. P. Krichbaum ; M. Bock ; M. Bremer ; C. Grossberger ; Michael Lindqvist (Institutionen för rymd- och geovetenskap, Onsala rymdobservatorium) ; A. P. Lobanov ; K. Mannheim ; Ivan Marti-Vidal (Institutionen för rymd- och geovetenskap, Onsala rymdobservatorium) ; C. Muller ; J. Wilms ; J. A. Zensus
Astronomy and Astrophysics (0004-6361). Vol. 593 (2016),
[Artikel, refereegranskad vetenskaplig]

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.

Nyckelord: magnetic fields, galaxies: active, galaxies: jets, galaxies: magnetic fields, galaxies: nuclei

Denna post skapades 2016-12-09. Senast ändrad 2016-12-19.
CPL Pubid: 246004


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Institutioner (Chalmers)

Institutionen för rymd- och geovetenskap, Onsala rymdobservatorium (2010-2017)


Astronomi, astrofysik och kosmologi

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