Journal
ASTRONOMY & ASTROPHYSICS
Volume 593, Issue -, Pages -Publisher
EDP SCIENCES S A
DOI: 10.1051/0004-6361/201527951
Keywords
magnetic fields; galaxies: active; galaxies: jets; galaxies: magnetic fields; galaxies: nuclei
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Funding
- Deutsche Forschungsgemeinschaft [WI 1860-10/1, GRK 1147]
- Spanish MINECO [AYA2012-38491-C02-01, AYA2013-4079-P, AYA2013-48226-C03-02-P]
- Generalitat Valenciana [PROMETEOII/2014/057, PROMETEOII/2014/069]
- COST [MP0905]
- National Aeronautics and Space Administration
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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.
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