2009ApJ...702L.148C


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.31CET11:46:04

2009ApJ...702L.148C - Astrophys. J., 702, L148-L152 (2009/September-2)

The invariant twist of magnetic fields in the relativistic jets of active galactic nuclei.

CONTOPOULOS I., CHRISTODOULOU D.M., KAZANAS D. and GABUZDA D.C.

Abstract (from CDS):

The origin of cosmic magnetic (B) fields remains an open question. It is generally believed that very weak primordial B fields are amplified by dynamo processes, but it appears unlikely that the amplification proceeds fast enough to account for the fields presently observed in galaxies and galaxy clusters. In an alternative scenario, cosmic B fields are generated near the inner edges of accretion disks in active galactic nuclei (AGNs) by azimuthal electric currents due to the difference between the plasma electron and ion velocities that arises when the electrons are retarded by interactions with photons. While dynamo processes show no preference for the polarity of the (presumably random) seed field that they amplify, this alternative mechanism uniquely relates the polarity of the poloidal B field to the angular velocity of the accretion disk, resulting in a unique direction for the toroidal B field induced by disk rotation. Observations of the toroidal fields of 29 AGN jets revealed by parsec-scale Faraday rotation measurements show a clear asymmetry that is consistent with this model, with the probability that this asymmetry came about by chance being less than 1%. This lends support to the hypothesis that the universe is seeded by B fields that are generated in AGNs via this mechanism and subsequently injected into intergalactic space by the jet outflows.

Abstract Copyright:

Journal keyword(s): accretion, accretion disks - galaxies: active - galaxies: jets - galaxies: magnetic fields - magnetic fields

Simbad objects: 31

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Number of rows : 31

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 QSO B0003-066 BLL 00 06 13.89288849 -06 23 35.3353162   19.1   17.14   ~ 265 1
2 QSO B0138-097 BLL 01 41 25.83215547 -09 28 43.6741894   16.94 16.55 17.21   ~ 243 3
3 6C 021252+733537 BLL 02 17 30.8143057005 +73 49 32.612359669     19.0 18.97   ~ 408 1
4 QSO B0256+075 QSO 02 59 27.07662273 +07 47 39.6429493   18 18 16.9   ~ 161 1
5 NGC 1218 Sy1 03 08 26.2238190 +04 06 39.300921   12.84       ~ 346 1
6 4C 32.14 QSO 03 36 30.10760600 +32 18 29.3422210     17.50 16.6   ~ 584 1
7 3C 111 Sy1 04 18 21.2773655604 +38 01 35.801523843   19.75 18.05     ~ 862 1
8 Mrk 1506 Sy1 04 33 11.0958197353 +05 21 15.617543663   15.72 15.05 10.08   ~ 1856 2
9 8C 0716+714 BLL 07 21 53.4484901266 +71 20 36.362058601   15.5 14.17 14.27   ~ 1140 1
10 QSO J0738+1742 BLL 07 38 07.39374766 +17 42 18.9982302   16.76 16.22 15.78   ~ 898 1
11 QSO B0745+241 QSO 07 48 36.10927469 +24 00 24.1100315   19.70 18.89 17.88   ~ 181 1
12 QSO B0748+126 QSO 07 50 52.0457430 +12 31 04.828260   17.67 17.28 17.16   ~ 283 1
13 4C 22.21 BLL 08 23 24.7596243194 +22 23 03.292745682   20.22 19.57 19.7   ~ 168 1
14 4C 71.07 QSO 08 41 24.36526906 +70 53 42.1730054     16.5 16.8   ~ 699 1
15 6C 095456+654857 BLL 09 58 47.2452838930 +65 33 54.821524491     17.0 15.75   ~ 622 1
16 Ton 599 QSO 11 59 31.83390975 +29 14 43.8268741   14.80 14.41 17.652 13.39 ~ 804 1
17 M 106 Sy2 12 18 57.620 +47 18 13.39   9.14 8.41 8.11   ~ 2130 3
18 3C 273 BLL 12 29 06.6996828061 +02 03 08.598846466   13.05 14.830 14.11   ~ 5352 1
19 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6283 3
20 3C 279 QSO 12 56 11.1664521013 -05 47 21.531840471   18.01 17.75 15.87   ~ 2729 2
21 QSO B1334-127 QSO 13 37 39.78277768 -12 57 24.6932620   18.5 18.5 16.22   ~ 431 1
22 3C 345 QSO 16 42 58.8100340220 +39 48 36.999540578   16.81 16.59 16.84   ~ 1562 2
23 4C 39.49 BLL 16 53 52.21668494 +39 45 36.6089458 14.09 14.15 13.29 8.26   ~ 1936 2
24 7C 1749+7006 BLL 17 48 32.8399653579 +70 05 50.768853537   17.46 17.01 15.48   ~ 388 1
25 4C 09.57 BLL 17 51 32.81857318 +09 39 00.7284829   17.46 16.78 15.57   ~ 819 1
26 8C 1803+784 BLL 18 00 45.6831135718 +78 28 04.017792333   16.4 16.4 15.46   ~ 667 1
27 3C 371 BLL 18 06 50.6803567107 +69 49 28.108152993   14.77 14.22 11.39   ~ 800 2
28 QSO B2005+40 QSO 20 07 44.9443187008 +40 29 48.601470737   18.5 19 20.3   ~ 271 1
29 QSO B2155-152 QSO 21 58 06.28190211 -15 01 09.3278616   18.63 17.5 17.79   ~ 293 1
30 4C 11.69 QSO 22 32 36.40890517 +11 43 50.9040717   17.75 17.33     ~ 984 2
31 3C 454.3 QSO 22 53 57.74798 +16 08 53.5611   16.57 16.10 15.22   ~ 2529 2

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2020.10.31-11:46:04

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