2017MNRAS.469.4034O

Query : 2017MNRAS.469.4034O

2017MNRAS.469.4034O - Mon. Not. R. Astron. Soc., 469, 4034-4062 (2017/August-3)

Broad-band, radio spectro-polarimetric study of 100 radiative-mode and jet-mode AGN.

O'SULLIVAN S.P., PURCELL C.R., ANDERSON C.S., FARNES J.S., SUN X.H. and GAENSLER B.M.

Abstract (from CDS):

We present the results from a broad-band (1 to 3 GHz), spectro-polarimetry study of the integrated emission from 100 extragalactic radio sources with the Australia Telescope Compact Array, selected to be highly linearly polarized at 1.4 GHz. We use a general-purpose, polarization model-fitting procedure that describes the Faraday rotation measure (RM) and intrinsic polarization structure of up to three distinct polarized emission regions or 'RM components' of a source. Overall, 37 per cent/52 per cent/11 per cent of sources are best fitted by one/two/three RM components. However, these fractions are dependent on the signal-to-noise ratio (S/N) in polarization (more RM components more likely at higher S/N). In general, our analysis shows that sources with high integrated degrees of polarization at 1.4 GHz have low Faraday depolarization, are typically dominated by a single RM component, have a steep spectral index and have a high intrinsic degree of polarization. After classifying our sample into radiative-mode and jet-mode AGN, we find no significant difference between the Faraday rotation or Faraday depolarization properties of jet-mode and radiative-mode AGN. However, there is a statistically significant difference in the intrinsic degree of polarization between the two types, with the jet-mode sources having more intrinsically ordered magnetic field structures than the radiative-mode sources. We also find a preferred perpendicular orientation of the intrinsic magnetic field structure of jet-mode AGN with respect to the jet direction, while no clear preference is found for the radiative-mode sources.

Abstract Copyright: © 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): techniques: polarimetric - galaxies: active - galaxies: jet - galaxies: magnetic fields - radio continuum: galaxies - radio continuum: galaxies

VizieR on-line data: <Available at CDS (J/MNRAS/469/4034): table2.dat tablea1.dat>

Simbad objects: 101

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Number of rows : 101
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 PMN J0001-3025 rG 00 01 53.4036101808 -30 25 09.242125500   19.37 18.38 18.22   ~ 7 1
2 NVSS J000445-401145 rG 00 04 45.5228723616 -40 11 49.150329612   17.85   16.45   ~ 7 1
3 IC 1531 rG 00 09 35.5586611440 -32 16 36.924164364   13.48   11.90   ~ 93 1
4 QSO J0010-3054 QSO 00 10 34.9101813480 -30 54 15.297926436     18.48     ~ 19 1
5 QSO J0014-3059 Bla 00 14 37.9333085472 -30 59 19.377451788     19.70 19.3   ~ 14 1
6 PMN J0015-3526 rG 00 15 13.85 -35 26 51.3   19.35   18.61   ~ 5 1
7 QSO J0020-3106 rG 00 20 18.4491971280 -31 06 55.931766768   19.119   17.275   ~ 2 0
8 PKS J0021-3333 rG 00 21 35.9640110352 -33 34 34.899836196   17.888   16.608   ~ 5 1
9 QSO B0036-392 BLL 00 38 26.8800231624 -38 59 47.024628288           ~ 42 1
10 NVSS J003855-314240 rG 00 38 55.74 -31 42 38.8   19.158   17.247   ~ 3 1
11 QSO J0040-3254 QSO 00 40 17.5676531496 -32 54 41.847842664   18.5       ~ 5 0
12 QSO J0044-3147 QSO 00 44 04.7555321424 -31 47 03.723261576   19.80       ~ 7 0
13 QSO J0049-3140 QSO 00 49 12 -31 40.6           ~ 1 0
14 2QZ J005952.0-315219 QSO 00 59 52.0627724184 -31 52 19.430607864     18.49     ~ 12 1
15 QSO J0104-3314 QSO 01 04 39.5906005735 -33 14 52.397398758     19.0     ~ 14 1
16 NVSS J010805-361154 rG 01 08 05.1379458624 -36 11 54.480515280   17.25   15.93   ~ 5 1
17 QSO J0113-3551 Bla 01 13 15.8564949840 -35 51 48.365824068       19.89   ~ 45 1
18 QSO J0115-3049 QSO 01 15 46.50549742 -30 49 19.4007120     20.29     ~ 29 1
19 QSO J0115-3307 QSO 01 15 47.56 -33 07 21.1           ~ 2 1
20 QSO J0116-3626 QSO 01 16 24.06 -36 26 44.6           ~ 2 1
21 QSO B0114-3512 QSO 01 16 36.9182928048 -34 57 01.185718608     19.2     ~ 8 0
22 QSO B0115-342 Bla 01 17 44.6232013728 -33 57 06.017740596     19.0 19.8   ~ 25 1
23 QSO J0134-3843 Bla 01 34 32.0301210552 -38 43 33.386211696   17.76   17.71   ~ 61 1
24 QSO B0133-3909 QSO 01 35 35.7744544080 -38 54 24.681097368     19.8     ~ 11 1
25 NVSS J014043-364231 rG 01 40 42.8766940823 -36 42 27.597877804   19.47   18.93   ~ 5 1
26 QSO J0141-3835 rG 01 41 43.8148204224 -38 35 12.260382540           ~ 4 0
27 QSO B0142-4019 QSO 01 44 49.5125410968 -40 04 37.026163308   18.92 17.8 17.72   ~ 5 0
28 PMN J0152-3340 Rad 01 52 32.400 -33 39 52.15           ~ 10 1
29 QSO B0150-334 Bla 01 53 10.1215560912 -33 10 25.860644724   17.75 18.60 17.2   ~ 84 1
30 QSO J0200-3053 QSO 02 00 12.1757038704 -30 53 26.673024840   19.0 19.6     ~ 62 1
31 QSO J0203-3147 QSO 02 03 12.4322898336 -31 47 50.060750748     19.87     ~ 10 1
32 QSO J0207-3857 Bla 02 07 15.6094743264 -38 57 03.076652988           ~ 41 1
33 QSO J0208-3158 QSO 02 08 15 -31 58.1           ~ 1 0
34 QSO J0212-3444 rG 02 12 45.31 -34 44 51.5   19.398   17.324   ~ 2 0
35 QSO B0214-330 Bla 02 16 48.1854820080 -32 47 40.853126112   18.88 18.0 17.70   ~ 38 1
36 QSO J0217-3113 QSO 02 17 34.9357977768 -31 12 58.020106464     20.44     ~ 5 0
37 PKS J0219-3625 rG 02 19 02.9073835368 -36 26 07.161827064   19.90   19.15   ~ 13 1
38 QSO J0220-3144 QSO 02 20 33.8776896816 -31 44 17.040242544   18.776 18.78     ~ 8 1
39 QSO B0220-349 Bla 02 22 56.40164366 -34 41 28.7302247   21.39   21.10   ~ 79 1
40 PMN J0224-3456 Rad 02 24 30.00 -34 56 36.6           ~ 4 1
41 QSO B0227-369 Bla 02 29 28.44905708 -36 43 56.8223412     19.0 20.4   ~ 113 1
42 QSO B0229-398 Bla 02 31 51.81631078 -39 35 47.2639009   21.5   21.20   ~ 41 1
43 PKS 0231-362 rG 02 33 18.1879461936 -35 59 16.588621392   17.6       ~ 7 1
44 NVSS J023938-333150 rG 02 39 38.48 -33 31 49.5   19.012   17.105   ~ 3 1
45 QSO J0240-3239 rG 02 40 39.13 -32 39 53.7   19.135   17.361   ~ 2 0
46 NVSS J025647-332824 rG 02 56 47.4882025416 -33 28 22.991897532   17.29   15.74   ~ 3 1
47 QSO J0258-3146 QSO 02 58 05.9668624440 -31 46 27.630841008   19.81       ~ 12 1
48 LEDA 131162 Sy1 02 59 26.6891053344 -39 40 37.673975136   16.29       ~ 37 1
49 QSO B0258-344 QSO 03 00 36.1903818408 -34 14 05.457947388   18 18.0     ~ 17 1
50 QSO J0307-3037 QSO 03 07 08.2198997616 -30 37 27.906233556     18.63     ~ 17 1
51 ESO 357-9 rG 03 14 32.9419961808 -34 07 40.157702976   15.51   13.44   ~ 31 1
52 QSO J0326-3243 Bla 03 26 15.0455671296 -32 43 25.039530516       17.67   ~ 25 1
53 NVSS J033141-303253 rG 03 31 41.8786581083 -30 32 49.224980472   18.499   17.012   ~ 4 1
54 QSO B0335-364 Bla 03 36 54.0235343784 -36 16 06.220332408   18.40 18 18.7   ~ 80 1
55 QSO J0338-3522 QSO 03 38 48 -35 22.3           ~ 2 0
56 LEDA 2823643 Sy1 03 42 05.4065822945 -37 03 21.576616433   18.84 18.6 17.65   ~ 44 1
57 PKS J0343-3146 rG 03 42 58.217 -31 47 06.44   18.93   18.57   ~ 6 1
58 PKS 0342-400 rG 03 44 16.9134011052 -39 50 33.730938648           ~ 6 1
59 NVSS J035009-385612 rG 03 50 08.8790347776 -38 56 13.799570460   17.79   16.29   ~ 7 1
60 QSO J1008-3011 QSO 10 08 55.2458434344 -30 11 12.320116980   18.77 18.0 17.78   ~ 23 1
61 QSO J1024-3234 Bla 10 24 00.4238285208 -32 34 16.053202848     19.5 18.3   ~ 54 1
62 QSO J1051-3138 Bla 10 51 04.77754627 -31 38 14.3076867   18.5 19.4 19   ~ 61 1
63 CTS 10 Bla 11 03 31.5264793968 -32 51 16.694017200   16.29 16.30 16.4   ~ 117 1
64 QSO J1107-3043 Bla 11 07 44.1439596624 -30 43 35.060179692     20.20 19.6   ~ 21 1
65 NGC 3557 Sy1 11 09 57.653 -37 32 21.02   11.50 10.40 9.79   ~ 283 2
66 LEDA 712088 G 11 15 57.5244685080 -30 51 35.922977676   16.4       ~ 10 1
67 6dFGS gJ111713.4-303347 EmG 11 17 13.3770475224 -30 33 46.952556588   17.11   15.64   ~ 3 0
68 PMN J1122-3604 rG 11 22 28.0836218376 -36 05 11.026976352   16.96   15.55   ~ 9 1
69 QSO J1125-3523 QSO 11 25 56 -35 23.3           ~ 1 0
70 PKS J1141-3504 rG 11 41 50.3101466568 -35 04 06.735826596   18.66 17.0 16.39   ~ 6 1
71 QSO B1144-3755 BLL 11 47 01.37071212 -38 12 11.0235229   19.03 16.2 16.72   ~ 320 1
72 QSO B1151-298 QSO 11 53 49.3221415272 -30 09 45.784156392     19.0     ~ 19 1
73 NVSS J115420-372114 rG 11 54 20.676 -37 21 16.12           ~ 5 1
74 2MASX J12171443-3313569 LIN 12 17 14.4204438144 -33 13 56.840190996   15.9       ~ 16 1
75 QSO J1228-3003 QSO 12 28 43 -30 03.1           ~ 1 0
76 QSO B1228-310 Bla 12 30 44.9334200352 -31 21 23.307385356   19.5 20.4 18.7   ~ 31 1
77 LEDA 647175 rG 12 33 56.7263187696 -35 34 43.660004880   18.06   16.40   ~ 3 0
78 QSO J1244-4012 BLL 12 44 29.1980939712 -40 12 46.955577564   18.5   17.3   ~ 23 1
79 NVSS J124613-340635 rG 12 46 13.2764855016 -34 06 31.806529524   16.20   15.02 14.22 ~ 14 1
80 QSO B1254-333 BLL 12 57 20.6263622784 -33 34 44.304920184   16.8 18.6 17.21   ~ 44 1
81 QSO J1300-3253 Bla 13 00 42.4259780568 -32 53 12.114395844     18.70 18   ~ 88 1
82 MCG-05-31-012 Bla 13 01 00.7843338120 -32 26 28.723182036   13.06 13 11.50   ~ 99 2
83 2MFGC 10394 EmG 13 04 33.948 -34 06 28.39   16.78   15.68 15.35 ~ 9 1
84 QSO B1304-318 Bla 13 07 15.1785904848 -32 07 58.642758948     19.5 19.39   ~ 30 1
85 LEDA 620303 rG 13 07 23.7 -37 37 12   17.83   16.23 15.82 ~ 4 0
86 QSO B1313-333 Bla 13 16 07.98594757 -33 38 59.1726741   18.04 20.0 17.23   ~ 267 1
87 QSO J1324-3623 Bla 13 24 03.5627020968 -36 23 35.647106712   18.77 16.60 17.54   ~ 20 1
88 QSO J1342-3240 Bla 13 42 06.20202 -32 40 47.6391       21.40   ~ 16 1
89 NVSS J134248-360145 rG 13 42 48.7526542896 -36 01 49.238524776   17.08   15.61 15.04 ~ 6 1
90 PKS J1345-3140 Rad 13 45 03.803 -31 40 09.65           ~ 4 1
91 NGC 5419 rG 14 03 38.7225244848 -33 58 41.881842120   11.77 11.33 10.21 14.44 ~ 208 3
92 PMN J1411-3204 rG 14 11 47.4579248088 -32 05 15.920164500   17.80   16.35 15.62 ~ 7 1
93 QSO J1413-3002 rG 14 13 31.92 -30 02 43.6   18.52   16.64   ~ 3 0
94 NVSS J143327-314141 rG 14 33 27.4773219168 -31 41 40.494686028   15.8       ~ 13 1
95 QSO B1435-311 Bla 14 38 10.7853337032 -31 22 28.523484876     19.0 18.6   ~ 26 1
96 QSO J1457-3539 BLL 14 57 26.71171449 -35 39 09.9716148   17.95 19.50 18.93   ~ 167 1
97 QSO B1508-325 Bla 15 11 50.4033093024 -32 42 57.790366596     18.5 17.1   ~ 31 1
98 QSO B1519-273 BLL 15 22 37.67599511 -27 30 10.7855131   18.72 18.5 17.42   ~ 313 1
99 ICRF J152433.4-301221 Sy2 15 24 33.41429043 -30 12 21.3475562   15.92   14.43   ~ 50 1
100 NVSS J152737-301459 Rad 15 27 37.903 -30 15 01.21           ~ 4 1
101 ICRF J193925.0-634245 Sy2 19 39 25.0245304992 -63 42 45.640373400   18.87 18.37 17.64   ~ 1332 2

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