Detailed Imaging of the Sombrero Galaxy Jet

The Sombrero galaxy (M 104) is associated with one of the nearest low-luminosity active galactic nuclei (AGN). Hada et al. have imaged the radio jet structure of this AGN between 1.4 and 43GHz using the VLBA down to scales of 0.01pc, or 100 RSchwarzschild. The jet is found to be within 25o of the Earth line-of-sight. The derived pole-on nature of the M 104 jet is in accordance with previous arguments that M 104 contains a true type II AGN, i.e., the broad line region of this nucleus is actually absent or intrinsically weak.

Figure: The VLBA 43GHz image of M104 at 0.2 mas resolution (left), and the spectral index image (right).

View Publication: Evidence for a Nuclear Radio Jet and its Structure Down to <100 Schwarzschild Radii in the Center of the Sombrero Galaxy (M 104, NGC 4594), Kazuhiro Hada (INAF, NAOJ, Akhiro Doi (JAXA), Hiroshi Nagai (NAOJ), Makoto Inoue (ASIAA), Mreki Honma (NAOJ, SOKENDAI), Marcello Giroletti (INAF), and Gabriele Giovannini (INAF, Bologna), 2013 ApJ, 779, 6 (15 Nov 2013).

Added 17 Jan 2014

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