2015MNRAS.453.1669B

Query : 2015MNRAS.453.1669B

2015MNRAS.453.1669B - Mon. Not. R. Astron. Soc., 453, 1669-1683 (2015/October-3)

RoboPol: first season rotations of optical polarization plane in blazars.

BLINOV D., PAVLIDOU V., PAPADAKIS I., KIEHLMANN S., PANOPOULOU G., LIODAKIS I., KING O.G., ANGELAKIS E., BALOKOVIC M., DAS H., FEILER R., FUHRMANN L., HOVATTA T., KHODADE P., KUS A., KYLAFIS N., MAHABAL A., MYSERLIS I., MODI D., PAZDERSKA B., PAZDERSKI E., PAPAMASTORAKIS I., PEARSON T.J., RAJARSHI C., RAMAPRAKASH A., REIG P., READHEAD A.C.S., TASSIS K. and ZENSUS J.A.

Abstract (from CDS):

We present first results on polarization swings in optical emission of blazars obtained by RoboPol, a monitoring programme of an unbiased sample of gamma-ray bright blazars specially designed for effective detection of such events. A possible connection of polarization swing events with periods of high activity in gamma-rays is investigated using the data set obtained during the first season of operation. It was found that the brightest gamma-ray flares tend to be located closer in time to rotation events, which may be an indication of two separate mechanisms responsible for the rotations. Blazars with detected rotations during non-rotating periods have significantly larger amplitude and faster variations of polarization angle than blazars without rotations. Our simulations show that the full set of observed rotations is not a likely outcome (probability ≤ 1.5x10–2) of a random walk of the polarization vector simulated by a multicell model. Furthermore, it is highly unlikely ( ∼ 5x10–5) that none of our rotations is physically connected with an increase in gamma-ray activity.

Abstract Copyright: © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2015)

Journal keyword(s): polarization - galaxies: active - galaxies: jets - galaxies: nuclei

Nomenclature: Tables 2-8: RBPL JHHMM+DDMM N=83 added.

Simbad objects: 62

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Number of rows : 62
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 RX J0045.3+2127 BLL 00 45 19.2982391160 +21 27 40.001545080 17.37 17.33 17.01 17.3   ~ 85 1
2 ICRF J011452.7+132537 BLL 01 14 52.7765859624 +13 25 37.531933788 17.20 16.98 16.86 17.2   ~ 67 1
3 6C 013354+473615 Bla 01 36 58.59480326 +47 51 29.1000720     19.50 19.25 15.21 ~ 537 1
4 ICRF J021113.1+105134 BLL 02 11 13.1774921592 +10 51 34.798753116 13.96 13.63 13.40 15.42   ~ 161 1
5 ICRF J021717.1+083703 BLL 02 17 17.1248727600 +08 37 03.897374052     17.90 14.68   ~ 118 1
6 QSO B0256+075 Bla 02 59 27.07662321 +07 47 39.6429924   18 18 16.9   ~ 210 1
7 QSO B0420-0127 Bla 04 23 15.80072217 -01 20 33.0656073   17.50 17.00 16.28   ~ 1263 3
8 8C 0716+714 BLL 07 21 53.4482942664 +71 20 36.363846516   15.5 15.50 14.27   ~ 1388 1
9 4C 71.07 Bla 08 41 24.36528508 +70 53 42.1730435     17.30 16.8   ~ 818 1
10 PG 0851+202 BLL 08 54 48.8749846272 +20 06 30.639583620   15.649 15.146 15.446   ~ 2513 1
11 6C 095456+654857 BLL 09 58 47.2451872176 +65 33 54.819354600     17.0 15.75   ~ 771 1
12 6C 104451+715930 Bla 10 48 27.61992778 +71 43 35.9384142     19.0 17.49   ~ 270 1
13 7C 1219+2830 BLL 12 21 31.6904439888 +28 13 58.500308172   16.81 16.11 14.24   ~ 924 1
14 3C 279 Bla 12 56 11.16657958 -05 47 21.5251510   18.01 17.75 15.87   ~ 3205 2
15 QSO J1512-0906 Bla 15 12 50.53293048 -09 05 59.8297908   16.74 16.54     ~ 1409 1
16 QSO B1542+614 BLL 15 42 56.9436243096 +61 29 55.346749080   16.9 16.25 16.6   ~ 159 1
17 7C 155054.79+581551.00 Bla 15 51 58.2078070152 +58 06 44.454684204   17.03 16.73 15.60   ~ 76 1
18 QSO B1551+130 Bla 15 53 32.6978115648 +12 56 51.713513052   18.05 17.65 17.1   ~ 182 1
19 PG 1553+113 BLL 15 55 43.0440048528 +11 11 24.365649948 14.91 14.72 14.57 13.99   ~ 672 1
20 7C 1557+5633 BLL 15 58 48.2889478488 +56 25 14.121578928   18.08 17.54 17.2   ~ 104 1
21 7C 1603+5722 Bla 16 04 37.3548559224 +57 14 36.660126444   18.02 17.79 17.70   ~ 120 1
22 4C 15.54 BLL 16 07 06.43046256 +15 51 34.4855829   20.15 19.49 17.5   ~ 181 2
23 4C 38.41 Bla 16 35 15.49297809 +38 08 04.5005995   18.14 17.97 17.25   ~ 906 1
24 6C 163718+572618 Bla 16 38 13.45629995 +57 20 23.9789828     16.90 16.94   ~ 381 1
25 3C 345 Bla 16 42 58.80997043 +39 48 36.9939552   16.81 16.59 16.84   ~ 1808 3
26 Z 225-7 BLL 16 53 52.21668403 +39 45 36.6088754 14.09 14.15 13.29 8.26   ~ 2304 2
27 RX J1725.0+1152 BLL 17 25 04.3409350008 +11 52 15.471967296   16.29 15.77 14.45   ~ 221 1
28 RX J1748.5+7005 BLL 17 48 32.8402992264 +70 05 50.768819304   17.46 17.01 15.48   ~ 456 2
29 4C 09.57 BLL 17 51 32.81857326 +09 39 00.7284066   17.46 16.78 15.57   ~ 1007 1
30 ATO J268.5491+32.2064 BLL 17 54 11.7992994912 +32 12 23.055857100           ~ 62 1
31 1RXS J180043.6+782806 BLL 18 00 45.6838528560 +78 28 04.018028016   16.4 15.90 16.134   ~ 793 1
32 Z 340-35 BLL 18 06 50.6802916920 +69 49 28.109609256   14.77 14.22 11.39   ~ 909 1
33 RX J1809.4+2041 BLL 18 09 25.4519567448 +20 41 30.904155564           ~ 47 0
34 7C 181142.79+314318.00 BLL 18 13 35.2028439312 +31 44 17.620234836     17.4 15.2   ~ 116 1
35 2MASS J18362123+3136268 BLL 18 36 21.2402805936 +31 36 26.730232848           ~ 55 1
36 RX J1838.7+4802 BLL 18 38 49.1550459624 +48 02 34.274232744     17.60 15.671   ~ 89 0
37 RX J1841.7+3218 BLL 18 41 47.0421791016 +32 18 39.144474684           ~ 54 0
38 ICRF J190311.6+554038 BLL 19 03 11.6077129056 +55 40 38.450387568   18.1   16.4   ~ 121 2
39 6C 192647+611105 BLL 19 27 30.4428785736 +61 17 32.878880988   17.5 17.5 16.99   ~ 139 1
40 QSO B1959+650 BLL 19 59 59.8520303688 +65 08 54.652536492     12.8 11.21   ~ 699 2
41 8C 2007+777 BLL 20 05 30.9987913056 +77 52 43.248139536     16.5 17.36   ~ 474 1
42 QSO B2012-017 BLL 20 15 15.1579835136 -01 37 32.554493544 18.08 17.86 17.61 16.5   ~ 105 1
43 PMN J2016-0903 BLL 20 16 24.0367778290 -09 03 33.467036321           ~ 55 1
44 6C 202345+760123 BLL 20 22 35.5757966424 +76 11 26.171152728     18.10 17.54   ~ 109 1
45 ICRF J203015.1-062214 Bla 20 30 15.13901027 -06 22 14.9332467       21.9   ~ 57 1
46 ICRF J203900.7-104641 BLL 20 39 00.7103307384 -10 46 41.863534320 17.24 16.95 16.69 19.0   ~ 72 1
47 ICRF J204237.3+750802 Sy1 20 42 37.3079247456 +75 08 02.445851940     14.46 13.80   ~ 281 1
48 1RXS J213135.5-091525 BLL 21 31 35.4233915640 -09 15 23.693668272     18.00 17.5   ~ 73 1
49 QSO B2141+1730 Bla 21 43 35.54456275 +17 43 48.7875890   15.91 15.73 15.17   ~ 418 1
50 4C 06.69 Bla 21 48 05.45866779 +06 57 38.6041877   16.85 16.47 15.06   ~ 703 1
51 2MASX J21494185+0322516 BLL 21 49 41.8698135840 +03 22 51.435422796 18.01 17.72 17.31     ~ 56 1
52 NVSS J215009-141155 Rad 21 50 09.037 -14 11 55.12           ~ 10 1
53 PMN J2150-1411 BLL 21 50 15.5181024144 -14 10 49.960467192   18.65   17.03   ~ 61 0
54 NAME BL Lac BLL 22 02 43.2913536816 +42 16 39.979416792   15.66 14.72     ~ 2397 1
55 3C 446 BLL 22 25 47.25929101 -04 57 01.3907626   18.83 18.39 16.3   ~ 863 1
56 4C 11.69 Bla 22 32 36.40890093 +11 43 50.9040592   17.75 17.33     ~ 1205 2
57 NVSS J224354+202103 BLL 22 43 54.7436079792 +20 21 03.775386276       16.1   ~ 116 1
58 87GB 224943.5+401502 BLL 22 51 59.7712237200 +40 30 58.163205276     16.44 15.9   ~ 69 2
59 3C 454.3 Bla 22 53 57.7480438728 +16 08 53.561508864   16.57 16.10 15.22   ~ 3004 2
60 6C 230840+340844 Bla 23 11 05.32880063 +34 25 10.9049514     19.5 19.2   ~ 138 1
61 QSO B2331+073 Bla 23 34 12.8282052264 +07 36 27.551607552   16.0 16.04 16.45   ~ 153 1
62 2FGL J2341.7+8016 BLL 23 40 54.2290641384 +80 15 16.020826848     18.90 16.8   ~ 59 1

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