2016A&A...586A.117P


C.D.S. - SIMBAD4 rel 1.7 - 2019.12.11CET09:38:08

2016A&A...586A.117P - Astronomy and Astrophysics, volume 586A, 117-117 (2016/2-1)

A study of a sample of high rotation-measure AGNs through multifrequency single-dish observations.

PASETTO A., KRAUS A., MACK K.-H., BRUNI G. and CARRASCO-GONZALEZ C.

Abstract (from CDS):

We characterised and studied, in the radio band, a sample of candidates for high rotation measure (RM). These point-like objects show a strong depolarisation at 21cm. This feature suggests the presence of a very dense medium surrounding them combined with a strong magnetic field. This work aims at selecting and studying a sample of radio sources with high RM, thus studying their physical conditions and their status with respect to their surrounding medium. We want to understand whether any connection is present between the AGN-hosting galaxy medium with some evolutionary track and/or some restarting phase of the AGN itself. Multifrequency single-dish observations were performed with the 100-m Effelsberg telescope to define the initial sample, to characterise the spectral energy distribution (SED) of the final sample (30 targets), and to determine their RM in the 11 to 2cm wavelength range. From the observations, the SED and the polarisation information, i.e. the fractional polarisation and the polarisation angle, have been determined. Three different object types were revealed from the SED analysis: older, GPS-like, and mixed. For each of the targets, the rotation measure was found and the depolarisation modelled. No significant correlation is found between the depolarisation behaviours and the SEDs, while a correlation is found between sources with mixed SED (with an old component at low frequency and compact components at high frequencies) and high values of the rotation measure (with values in the rest frame greater than 1000rad/m2). This work helps us to define and identify a sample of sources with high RM. From the analysis we can conclude that the sources showing a restarting phase at high frequency (with a mixed SED) are characterised by a really dense and/or a magnetised medium that strongly rotates the polarisation angle at the different frequencies, leading to a high RM.

Abstract Copyright:

Journal keyword(s): galaxies: active - polarization - galaxies: magnetic fields - quasars: general - radio continuum: galaxies

Simbad objects: 112

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Number of rows : 112

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 [VV2006] J013241.1-080406 BLL 01 32 41.1266872881 -08 04 04.840585508   17.51 16.50 15.86   ~ 25 0
2 QSO B0131-001 QSO 01 34 12.70417317 +00 03 45.1359175   23.34 22.50 20.780   ~ 30 1
3 3C 48 QSO 01 37 41.2995845985 +33 09 35.079126038   16.62 16.20     ~ 2439 2
4 QSO B0237-027 QSO 02 39 45.47226775 -02 34 40.9144020   19.5 21 19.04   ~ 101 1
5 QSO B0240-060 QSO 02 43 12.4692045676 -05 50 55.297043145   18.2 19.0 19.11   ~ 51 1
6 ICRF J024918.0+061951 QSO 02 49 18.0157001706 +06 19 51.949323933       17.55   ~ 24 1
7 4C 05.14 rG 03 23 20.2606504221 +05 34 11.893889982     19     ~ 73 1
8 2C 553 QSO 06 27 10.1 -05 53 06           ~ 147 1
9 7C 0703+4652 G 07 06 48.1 +46 47 56   23.1       ~ 33 1
10 ICRF J073758.9+643043 QSO 07 37 58.98065187 +64 30 43.3443619           ~ 9 0
11 QSO B0738+491 QSO 07 42 02.74894651 +49 00 15.6089340   22.33 21.75 21.33   ~ 38 1
12 QSO J0751+2716 QSO 07 51 41.517 +27 16 31.79     18.7     ~ 68 2
13 PKS 0802+212 Rad 08 05 38.53424806 +21 06 51.5924358           ~ 25 1
14 ICRF J080836.7+264636 Q? 08 08 36.76496080 +26 46 36.7401207   21.92   20.12   ~ 12 0
15 PKS J0830+2323 Rad 08 30 21.7 +23 23 26           ~ 2 1
16 7C 085912.69+432156.00 QSO 09 02 30.91996730 +43 10 14.1657057   20.78 20.61 19.77   ~ 29 1
17 6C 092005+390241 Bz? 09 23 14.45293105 +38 49 39.9101375           ~ 32 1
18 6C 094229+465038 QSO 09 45 42.09267445 +46 36 50.5962342       20.63   ~ 30 1
19 4C 28.24 Rad 09 52 06.1 +28 28 33       19.62   ~ 18 1
20 9C J0954+2639 Bz? 09 54 39.79651721 +26 39 24.5434066       22.54   ~ 17 1
21 M 82 IG 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5236 6
22 Ton 469 Sy1 09 58 20.94963113 +32 24 02.2095353   15.88 15.78 15.51   ~ 389 1
23 NVSS J100631+171317 rG 10 06 31.7684732763 +17 13 17.083794306           ~ 7 1
24 PKS J1015+0318 Rad 10 15 34.0 +03 18 50           ~ 2 1
25 4C 39.32 rG 10 28 44.2754478852 +38 44 36.836081612   18.4       ~ 43 1
26 7C 1030+3951 QSO 10 33 22.06100090 +39 35 51.0832314   19.55 19.06 21.17   ~ 39 1
27 ICRF J103507.0+562846 Sy2 10 35 07.03999665 +56 28 46.7960909   20.2 21.244 20.200   ~ 168 1
28 ICRF J104309.0+240835 BLL 10 43 09.03576998 +24 08 35.4093695   17.98 17.32 16.40   ~ 90 1
29 QSO B1042+071 QSO 10 44 55.91124593 +06 55 38.2626553   19.81 19.35     ~ 56 1
30 NVSS J104732+145646 Rad 10 47 32.4 +14 56 47           ~ 2 1
31 PKS 1045+019 Rad 10 48 22.86784993 +01 41 48.1120614           ~ 22 1
32 ICRF J105715.7+001203 G 10 57 15.76745181 +00 12 03.5763691           ~ 21 1
33 ICRF J105811.0-030927 Bla 10 58 11.01069186 -03 09 27.2548483           ~ 9 0
34 NVSS J110130+390433 Rad 11 01 30.06957669 +39 04 32.6333217           ~ 14 1
35 NVSS J111013+602842 Rad 11 10 13.08810710 +60 28 42.5667114           ~ 15 1
36 NRAO 1122+19 Rad 11 24 43.80 +19 19 30.5           ~ 2 0
37 NVSS J113555+425844 Rad 11 35 55.98901 +42 58 44.6570           ~ 27 0
38 6C 114405+541331 QSO 11 46 44.2027592310 +53 56 43.049545138   20.5 20.5 19.82   ~ 47 1
39 PMN J1148+0751 Rad 11 48 30.70 +07 52 07.0           ~ 2 0
40 7C 114610.00+594129.00 Bla 11 48 50.35825 +59 24 56.3820   12.9   11.57   ~ 201 1
41 ICRF J115511.0+455539 G 11 55 11.00923543 +45 55 39.6248802           ~ 9 1
42 NVSS J120418+520218 Rad 12 04 18.61092 +52 02 17.6218           ~ 4 1
43 NVSS J120827+541319 Rad 12 08 27.49949114 +54 13 19.5178907           ~ 17 1
44 4C 13.46 QSO 12 13 32.1704401508 +13 07 20.906840209   18.87 18.53 18   ~ 104 1
45 PKS J1215-0628 Rad 12 15 14.4 -06 28 04           ~ 2 1
46 NGC 4278 LIN 12 20 06.82563 +29 16 50.7124 11.54 11.09 10.16     ~ 876 2
47 3C 273 BLL 12 29 06.6996828061 +02 03 08.598846466   13.05 14.830 14.11   ~ 5252 1
48 6C 123151+480958 QSO 12 34 13.3310442815 +47 53 51.237290010   17.62 17.31 16.8   ~ 58 1
49 QSO J1244+4048 QSO 12 44 49.1870410857 +40 48 06.162349760   19.0 19.0     ~ 59 1
50 QSO J1246-0730 QSO 12 46 04.23210358 -07 30 46.5745473   17.6 18.0 18.2   ~ 162 1
51 PKS 1252+092 Rad 12 54 58.95765 +08 59 47.5515           ~ 7 1
52 [VV2006] J131107.8+141746 QSO 13 11 07.8239708494 +14 17 46.666948058   20.11 19.97 19.6   ~ 39 1
53 87GB 131050.3+560417 QSO 13 12 53.2 +55 48 13           ~ 11 2
54 ICRF J131337.8+545823 Sy2 13 13 37.85316548 +54 58 23.8993959     21.735 20.374   ~ 28 1
55 [VV98] J132412.0+404812 BLL 13 24 12.09560728 +40 48 11.7633699     19.50 19.4   ~ 34 0
56 NVSS J132650+571207 Rad 13 26 50.57262349 +57 12 06.7491777           ~ 13 1
57 6C 132509+434157 QSO 13 27 20.9790663779 +43 26 27.987752421   19.99 19.64     ~ 57 1
58 3C 286 Sy1 13 31 08.2885060664 +30 30 32.960825108   17.51 17.25     ~ 3626 1
59 QSO B1331+170 QSO 13 33 35.7826224 +16 49 04.014213   16.84 16.71 16.41   ~ 402 1
60 QSO B1337+637 QSO 13 39 23.7852109073 +63 28 58.415651926   19.38 19.30     ~ 44 0
61 ICRF J134723.4+183537 QSO 13 47 23.4908675246 +18 35 37.571496010   18.5 19.5 19.55   ~ 33 1
62 ICRF J135116.9+083039 QSO 13 51 16.9192006677 +08 30 39.905858075   18.18 17.94 17.65   ~ 35 0
63 NVSS J135740+435400 rG 13 57 40.59226022 +43 53 59.7686434     22.708 20.951   ~ 36 1
64 ICRF J135840.6+473758 Sy2 13 58 40.66635882 +47 37 58.3107113   19.0       ~ 26 1
65 QSO B1402+044 QSO 14 05 01.11981424 +04 15 35.8189966   19.86 19.53 19.22   ~ 163 1
66 QSO B1404+286 BLL 14 07 00.3933203928 +28 27 14.695133019   16.13 15.35 10.29   ~ 659 2
67 4C 37.40 Rad 14 10 43.0 +36 47 22     19     ~ 17 1
68 QSO J1413+1509 QSO 14 13.0 +15 09           ~ 4 0
69 NVSS J141341+150939 Q? 14 13 41.65890 +15 09 39.5240           ~ 8 0
70 ICRF J143539.9-041455 QSO 14 35 39.9095684344 -04 14 55.270627708   18.14   17.38   ~ 23 1
71 87GB 144102.4+405726 G 14 42 59.355 +40 44 28.72           ~ 14 1
72 ICRF J145031.1+091027 QSO 14 50 31.16895090 +09 10 27.9553279       20.17   ~ 28 1
73 ICRF J145131.4+134324 G 14 51 31.49101145 +13 43 24.0013881           ~ 12 1
74 7C 145643.50+355453.00 Q? 14 58 43.4106447881 +35 42 57.692618953   20.63   18.96   ~ 5 1
75 NVSS J150407+324920 Rad 15 04 07.52536068 +32 49 21.1822508           ~ 11 1
76 NVSS J150747+585728 Rad 15 07 47.38578 +58 57 27.6525           ~ 8 1
77 NVSS J150919+472656 Rad 15 09 19.8 +47 26 56           ~ 3 1
78 NVSS J151105+220806 Rad 15 11 05.58122 +22 08 06.6557           ~ 3 1
79 4C 37.44 Rad 15 28 27.9 +37 38 10       19.90   ~ 23 1
80 NVSS J153948+611356 Rad 15 39 48.09279 +61 13 56.3216           ~ 7 1
81 [VV96] J154508.5+475155 QSO 15 45 08.52982479 +47 51 54.6640193   22.50 21.76 20.80   ~ 37 1
82 QSO B1547+507 QSO 15 49 17.46855479 +50 38 05.7882265   18.89 18.74 18.16   ~ 103 1
83 ICRF J160608.5+312446 QSO 16 06 08.51839276 +31 24 46.4578362       22.56   ~ 31 0
84 QSO B1614+051 QSO 16 16 37.55681502 +04 59 32.7367495   19.60 19.17 19.49   ~ 171 2
85 87GB 161434.7+265426 G 16 16 38.327 +26 47 01.34           ~ 12 1
86 NVSS J163011+213134 Rad 16 30 11.23078 +21 31 34.3095           ~ 14 1
87 87GB 163837.5+114955 BLL 16 40 58.8953932951 +11 44 04.223465264           ~ 37 1
88 4C 13.62 Rad 16 44 41.06 +13 05 15.4           ~ 13 1
89 PKS 1642+256 Rad 16 44 59.06085245 +25 36 30.5878753           ~ 11 1
90 NVSS J164554+111352 Rad 16 45 54.6701678234 +11 13 52.640995396           ~ 7 1
91 4C 37.50A Rad 16 47 25.74468 +37 52 18.0528   20.5       ~ 8 1
92 4C 17.71 rG 16 47 41.83943160 +17 20 11.8367147   18.50       ~ 51 1
93 NVSS J171119+301918 Rad 17 11 19.9 +30 19 18           ~ 13 1
94 4C 28.43 Rad 17 13 25.9 +28 13 07     16.5     ~ 12 1
95 ICRF J172320.7+341757 Sy1 17 23 20.7958592865 +34 17 57.966961854   15.58 15.46     ~ 280 1
96 ICRF J173549.0+504911 Bz? 17 35 49.00517 +50 49 11.5659       22.40   ~ 40 1
97 QSO B2047+03 BLL 20 50 06.2403049172 +04 07 48.887482656   19.8   19.00   ~ 66 1
98 QSO B2059+034 QSO 21 01 38.83416420 +03 41 31.3209577   18.13 17.78 17.68   ~ 145 1
99 NGC 7027 PN 21 07 01.8 +42 14 10   9.1 10.9     ~ 2304 1
100 [VV2006] J212632.7-011932 QSO 21 26 32.7582790605 -01 19 32.411654991     19.90 19.8   ~ 25 1
101 4C 04.75 Rad 21 45 17.8 +04 31 32           ~ 10 1
102 QSO B2144+093 QSO 21 47 10.16296927 +09 29 46.6723567   18.72 18.54 16.51   ~ 171 1
103 ICRF J215137.8+055212 Sy1 21 51 37.87549312 +05 52 12.9545524   23.700 22.050 20.850   ~ 100 1
104 [VV2006] J215304.7+124104 QSO 21 53 04.6585278437 +12 41 05.195998445   19.82 19.59     ~ 22 1
105 4C 06.71 Rad 22 00 57.5 +07 08 28           ~ 9 1
106 NAME BL Lac BLL 22 02 43.2913773726 +42 16 39.978417860   15.66 14.72     ~ 1977 1
107 [VV98] J224528.3+032409 QSO 22 45 28.2848261896 +03 24 08.860357791   18.5 19.0 17.55   ~ 31 1
108 QSO B2320+079 QSO 23 22 36.0902085468 +08 12 01.594650867   17.6   18.2   ~ 69 1
109 PKS J2331+0705 Rad 23 31 55.5231672282 +07 05 42.072006439           ~ 6 1
110 PKS J2333-0903 Rad 23 33 47.3 -09 03 04           ~ 6 1
111 ICRF J234106.9+001833 BLL 23 41 06.90894668 +00 18 33.3490768   20.26 19.46 15.6   ~ 40 2
112 LBQS 2351-0036 QSO 23 54 09.1765986021 -00 19 47.951893289   18.80 18.48 18.1   ~ 95 1

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2019.12.11-09:38:08

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