2001ApJ...556..113H


C.D.S. - SIMBAD4 rel 1.7 - 2020.11.25CET07:46:55

2001ApJ...556..113H - Astrophys. J., 556, 113-120 (2001/July-3)

Parsec-scale circular polarization observations of 40 blazars.

HOMAN D.C., ATTRIDGE J.M. and WARDLE J.F.C.

Abstract (from CDS):

We present circular polarization results from a 5 GHz survey of the parsec-scale polarization properties of 40 active galactic nuclei (AGNs) made with the VLBA. We find 11 circular polarization detections at the 3 σ level or higher. This nearly quadruples the number of sources detected in circular polarization at VLBI resolution. We find no correlation between fractional linear and circular polarization across our sample. A likely explanation is external Faraday depolarization in the cores of AGNs which reduces linear polarization but leaves circular polarization unchanged. In comparing ours and other recent results to observations made ∼20 years ago, we find that, in five of six cases, sources have the same sign of circular polarization today as they did 20 years ago. This suggests the presence of a long-term property of the jets, such as the polarity of a net magnetic flux, which is stable on timescales much longer than those of individual outbursts.

Abstract Copyright:

Journal keyword(s): Galaxies: Active - Galaxies: Jets - Polarization

CDS comments: Table 1 : 0422-004 misprint for 0422+004

Simbad objects: 46

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Number of rows : 46

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 QSO J0217+0144 QSO 02 17 48.9547510 +01 44 49.698899   16.74 16.09 18.51 13.29 ~ 375 1
2 QSO B0219-1628 QSO 02 22 00.7250329 -16 15 16.547902   15.38 15.00 18.14   ~ 81 1
3 3C 66A BLL 02 22 39.6111630878 +43 02 07.797284539   15.71 15.21 14.5   ~ 801 1
4 3C 84 Sy2 03 19 48.1597607660 +41 30 42.114155434   13.10 12.48 11.09   ~ 3589 3
5 QSO B0336-0156 QSO 03 39 30.93778751 -01 46 35.8041062   18.96 18.41 17.33   ~ 512 1
6 QSO B0403-132A BLL 04 05 34.0033474012 -13 08 13.691542963   17.37 17.09 16.6   ~ 316 1
7 QSO B0420-0127 QSO 04 23 15.80072776 -01 20 33.0654034   17.50 17.00 16.28   ~ 1071 3
8 QSO B0422+004 BLL 04 24 46.8423020674 +00 36 06.327828096 16.15 15.94 16.98     ~ 326 1
9 QSO J0457-2324 QSO 04 57 03.1792314200 -23 24 52.020969479   18.85 18.5 16.56   ~ 338 1
10 QSO B0537-441 BLL 05 38 50.36155219 -44 05 08.9389165   15.77 16.48 16   ~ 795 2
11 QSO B0605-0834 BLL 06 07 59.69923743 -08 34 49.9781718     18.5 17.70   ~ 399 1
12 QSO B0607-157 QSO 06 09 40.9477650070 -15 42 40.649794982   18.47 18.0 19.90   ~ 291 1
13 4C -00.28 QSO 07 45 54.08232111 -00 44 17.5398546   18 17.1 16.69   ~ 177 1
14 QSO J0849+5108 BLL 08 49 57.9768357 +51 08 29.023814   19.37 18.78 17.79   ~ 199 2
15 QSO J0854+2006 BLL 08 54 48.8749311881 +20 06 30.642936668   15.91 15.43 15.56   ~ 2030 1
16 3C 212 QSO 08 58 41.4470080028 +14 09 44.771073264   19.96 19.06     ~ 232 1
17 4C 01.24B QSO 09 09 10.0921832543 +01 21 35.611559836   17.63 17.29 17.04   ~ 370 2
18 ICRF J090933.4+425346 Sy2 09 09 33.4971425 +42 53 46.481984   19.98 19.42 18.220   ~ 467 0
19 4C 01.28 BLL 10 58 29.60520747 +01 33 58.8237691   18.74 18.28 16.68   ~ 657 2
20 LB 2136 QSO 11 53 24.46663282 +49 31 08.8301947   17.94 17.66     ~ 429 1
21 Ton 599 QSO 11 59 31.83390975 +29 14 43.8268741   14.80 14.41 17.652 13.39 ~ 804 1
22 3C 273 BLL 12 29 06.6996828061 +02 03 08.598846466   13.05 14.830 14.11   ~ 5364 1
23 3C 279 QSO 12 56 11.1664521013 -05 47 21.531840471   18.01 17.75 15.87   ~ 2732 2
24 QSO B1334-127 QSO 13 37 39.78277768 -12 57 24.6932620   18.5 18.5 16.22   ~ 432 1
25 QSO B1404+286 BLL 14 07 00.3933203928 +28 27 14.695133019   16.13 15.35 10.29   ~ 688 2
26 QSO B1413+135 BLL 14 15 58.81750938 +13 20 23.7129069   21.055 20.000 18.461   ~ 381 1
27 QSO B1502+1041 QSO 15 04 24.97978142 +10 29 39.1986151   18.97 18.56 18.94   ~ 474 1
28 QSO B1504-167 QSO 15 07 04.78696071 -16 52 30.2670781   18.40 18.5 17.00   ~ 216 1
29 QSO J1512-0906 QSO 15 12 50.53292491 -09 05 59.8295878   16.74 16.54     ~ 1167 1
30 QSO B1519-273 BLL 15 22 37.67598872 -27 30 10.7854174   18.72 18.5 17.42   ~ 260 1
31 QSO B1546+0246 QSO 15 49 29.43684301 +02 37 01.1634197   17.57 17.42 15.53   ~ 319 1
32 QSO J1658+0515 QSO 16 58 33.4475275967 +05 15 16.444287791   17.00 16.54 16.21   ~ 208 1
33 8C 1842+681 BLL 18 42 33.64168915 +68 09 25.2277840     17.9 18.01   ~ 112 1
34 SS 433 HXB 19 11 49.5645897700 +04 58 57.824087535   16.3 13.0     A7Ib: 1942 3
35 QSO B1921-293 BLL 19 24 51.05595514 -29 14 30.1210524   18.71 18.21 15.07   ~ 704 0
36 ICRF J193925.0-634245 Sy2 19 39 25.02671 -63 42 45.6255   18.87 18.37 17.64   ~ 975 1
37 QSO B1958-179 QSO 20 00 57.09044485 -17 48 57.6725440   18.02 17.46 15.33   ~ 224 1
38 QSO B2032+107 QSO 20 35 22.3341660153 +10 56 06.789797044   17.96 16.37 17.4   ~ 161 1
39 QSO B2201+1711 BLL 22 03 26.89368 +17 25 48.2479       14.76   ~ 173 1
40 3C 446 BLL 22 25 47.2593030 -04 57 01.390762   18.83 18.39 16.3   ~ 767 1
41 QSO B2227-0848 QSO 22 29 40.08434003 -08 32 54.4353948   17.80 17.41 17.81   ~ 302 1
42 4C 11.69 QSO 22 32 36.40890517 +11 43 50.9040717   17.75 17.33     ~ 988 2
43 QSO B2232+282 BLL 22 36 22.4706694778 +28 28 57.412050821   19.1 19.0 17.60   ~ 223 1
44 QSO J2246-1206 QSO 22 46 18.2318680462 -12 06 51.276150444   16.63 16.45 15.99   ~ 263 1
45 3C 454.3 QSO 22 53 57.74798 +16 08 53.5611   16.57 16.10 15.22   ~ 2536 2
46 QSO B2345-167 QSO 23 48 02.60852518 -16 31 12.0222445   18.00 18.41 16.86   ~ 362 1

    Equat.    Gal    SGal    Ecl

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2020.11.25-07:46:55

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