2022ApJ...936L...1M

Query : 2022ApJ...936L...1M

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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Number of rows : 6
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 3588 2
2 M 77 Sy2 02 42 40.7091669408 -00 00 47.859690204 9.70 9.61 8.87 10.1 9.9 ~ 4897 2
3 [GBO96] S1 Rad 02 42 40.772 -00 00 47.73           ~ 69 0
4 [GBO96] C Rad 02 42 40.777 -00 00 47.43           ~ 31 0
5 [GBO96] NE Rad 02 42 40.788 -00 00 47.12           ~ 23 0
6 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 6156 6

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