1998A&A...330...79L


Query : 1998A&A...330...79L

1998A&A...330...79L - Astronomy and Astrophysics, volume 330, 79-89 (1998/2-1)

Ultracompact jets in active galactic nuclei.

LOBANOV A.P.

Abstract (from CDS):

We study the properties of ultracompact jets in several prominent radio sources (Cygnus A, 3C309.1, 3C345, 3C395, 4C39.25, and 1038+528A), using the frequency dependence of observed position of the optically thick jet core. Frequency dependent offsets of the core positions are used for calculating the luminosities, magnetic fields, and geometrical properties of the jets. Opacity effects are studied, for both synchrotron self-absorption and external free-free absorption. Pressure and density gradients in the jets and in surrounding ambient medium are shown to be a primary factor determining the observed properties of ultracompact jets. We discuss possible applications of opacity effects to studying the conditions existing in central regions of active galactic nuclei.

Abstract Copyright:

Journal keyword(s): galaxies: jets - galaxies: individual: Cygnus A, 3C 309.1, 3C 345 - radio continuum: galaxies

Simbad objects: 13

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Number of rows : 13
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 3C 84 Sy2 03 19 48.1599902040 +41 30 42.108850836   13.10 12.48 11.09   ~ 3768 3
2 Mrk 1506 Sy1 04 33 11.0956735296 +05 21 15.619461552   15.72 15.05 10.08   ~ 1915 2
3 ICRF J090933.4+425346 Sy2 09 09 33.4981341384 +42 53 46.454750376   19.98 19.42 18.220   ~ 477 0
4 ICRF J092703.0+390220 Sy1 09 27 03.0138528936 +39 02 20.850343332   17.17 17.00 16.486   ~ 959 1
5 6C 103844+524909 QSO 10 41 46.7816890392 +52 33 28.230749244   16.96 18.5 16.39   ~ 125 1
6 3C 273 BLL 12 29 06.6998257176 +02 03 08.597629980   13.05 14.830 14.11   ~ 5556 1
7 QSO B1445+101 QSO 14 45 16.4651373360 +09 58 36.075661572   18.58 17.78     ~ 379 1
8 ICRF J145907.5+714019 Sy1 14 59 07.5837714816 +71 40 19.865104068   17.24 16.78 17.2   ~ 470 1
9 3C 345 QSO 16 42 58.8102993888 +39 48 37.002763188   16.81 16.59 16.84   ~ 1615 2
10 3C 371 BLL 18 06 50.6802916920 +69 49 28.109609256   14.77 14.22 11.39   ~ 819 2
11 ICRF J190255.9+315941 Sy1 19 02 55.9388845368 +31 59 41.699274720     17.5     ~ 262 2
12 NAME Cyg A Sy2 19 59 28.35645829 +40 44 02.0966496   16.22 15.10     ~ 2237 2
13 NAME BL Lac BLL 22 02 43.2913536816 +42 16 39.979416792   15.66 14.72     ~ 2125 1

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2022.05.24-07:54:25

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