SIMBAD references

2022ApJ...936L...1M - Astrophys. J., 936, L1-L7 (2022/September-1)

ALMA Detection of Parsec-scale Blobs at the Head of a Kiloparsec-scale Jet in the Nearby Seyfert Galaxy NGC 1068.

MICHIYAMA T., INOUE Y., DOI A. and KHANGULYAN D.

Abstract (from CDS):

We present Atacama Large Millimeter/submillimeter Array observations at ≈100 GHz with 0.″05 (3 pc) resolution of the kiloparsec-scale jet seen in the nearby Seyfert galaxy NGC 1068, and we report the presence of parsec-scale blobs at the head of the jet. The combination of the detected radio flux (≈0.8 mJy), spectral index (≈0.5), and blob size (≈10 pc) suggests a strong magnetic field of B ≈ 240 μG. Such a strong magnetic field most likely implies magnetic field amplification by streaming cosmic rays. The estimated cosmic-ray power of the jet may exceed the limit set by the star formation activity in this galaxy. This result suggests that even modest-power jets can increase the galactic cosmic-ray content while propagating through the galactic bulge.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Active galactic nuclei - High energy astrophysics - Galaxy jets - Cosmic ray astronomy

Simbad objects: 6

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