2003A&A...403..537C


C.D.S. - SIMBAD4 rel 1.7 - 2020.02.29CET11:55:38

2003A&A...403..537C - Astronomy and Astrophysics, volume 403, 537-546 (2003/5-4)

Faraday rotation in the CSS QSOs 3C 43 and 3C 454.

COTTON W.D., SPENCER R.E., SAIKIA D.J. and GARRINGTON S.

Abstract (from CDS):

We present observations of the CSS QSOs 3C 43 and 3C 454 made with the VLA, MERLIN and VLBA at 2, 6 and 18cm to examine the Faraday rotation in these highly bent sources. 3C 43 is weakly polarized at 18cm at mas resolution but has a large rotation measure near the bend in the jet. This result is interpreted as indicating jet-ISM interaction. 3C 454 is relatively strongly polarized and has high rotation measure along the jet visible in the high resolution 18 cm images. There is no brightening of the jet near the bend to the west indicating that it is not caused by a jet-cloud collision and may simply be a hydrodynamic instability magnified by a small angle to the line of sight. However, there are clear differences in the sign and magnitude of the Faraday rotation measured at long and short wavelengths. This is interpreted as being due to thermal plasma mixed with the jet. Likely detection of circular polarization at 18cm supports this interpretation.

Abstract Copyright:

Journal keyword(s): polarization - galaxies: quasars: individual: 3C 43, 3C 454 - galaxies: jets - galaxies: nuclei - continuum: galaxies radio

Nomenclature: Figs 1, 6, Table 1: [CSS2003] 3C 43 A (Nos A-H), [CSS2003] 3C 454 A (Nos A-D).

Simbad objects: 10

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Number of rows : 10

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 3C 43 QSO 01 29 59.7699511792 +23 38 20.043694669           ~ 187 0
2 BWE 0143+2304 Rad 01 45 52.90629154 +23 19 19.2969567           ~ 5 0
3 Mrk 2 GiG 01 54 53.807 +36 55 04.64   14.2   13.05   ~ 127 1
4 3C 84 Sy2 03 19 48.1597607660 +41 30 42.114155434   13.10 12.48 11.09   ~ 3497 3
5 7C 055201.39+394824.00 QSO 05 55 30.80561150 +39 48 49.1649664     18.0 17.5   ~ 459 2
6 3C 286 Sy1 13 31 08.2885060664 +30 30 32.960825108   17.51 17.25     ~ 3661 1
7 QSO B1404+286 BLL 14 07 00.3933203928 +28 27 14.695133019   16.13 15.35 10.29   ~ 666 2
8 NAME BL Lac BLL 22 02 43.2913773726 +42 16 39.978417860   15.66 14.72     ~ 1984 1
9 NVSS J225027+210953 Rad 22 50 27.88 +21 09 52.8           ~ 3 1
10 3C 454.0 QSO 22 51 34.7283285659 +18 48 40.085907101   18.52 18.4     ~ 203 2

    Equat.    Gal    SGal    Ecl

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2020.02.29-11:55:38

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