2014MNRAS.442.1693P


Query : 2014MNRAS.442.1693P

2014MNRAS.442.1693P - Mon. Not. R. Astron. Soc., 442, 1693-1705 (2014/August-1)

The RoboPol optical polarization survey of gamma-ray-loud blazars.

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

Abstract (from CDS):

We present first results from RoboPol, a novel-design optical polarimeter operating at the Skinakas Observatory in Crete. The data, taken during the 2013 May-June commissioning of the instrument, constitute a single-epoch linear polarization survey of a sample of gamma-ray-loud blazars, defined according to unbiased and objective selection criteria, easily reproducible in simulations, as well as a comparison sample of, otherwise similar, gamma-ray-quiet blazars. As such, the results of this survey are appropriate for both phenomenological population studies and for tests of theoretical population models. We have measured polarization fractions as low as 0.015 down to R-mag of 17 and as low as 0.035 down to 18 mag. The hypothesis that the polarization fractions of gamma-ray-loud and gamma-ray-quiet blazars are drawn from the same distribution is rejected at the 3σ level. We therefore conclude that gamma-ray-loud and gamma-ray-quiet sources have different optical polarization properties. This is the first time this statistical difference is demonstrated in optical wavelengths. The polarization fraction distributions of both samples are well described by exponential distributions with averages of <p >=6.4 ^+0.9_-0.8×10^-2 for gamma-ray-loud blazars, and <p >=3.2 ^+2.0_-1.1×10^-2 for gamma-ray-quiet blazars. The most probable value for the difference of the means is 3.4^+1.5_-2.0×10^-2. The distribution of polarization angles is statistically consistent with being uniform.

Abstract Copyright: © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2014)

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

VizieR on-line data: <Available at CDS (J/MNRAS/442/1693): table2.dat table3.dat>

Nomenclature: Tables 2-3: RBPL JHHMM+DDMM N=89.

Simbad objects: 104

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Number of rows : 104
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 6C 001403+811827 BLL 00 17 08.4752241816 +81 35 08.137070016   17.60 16.52 15.95   ~ 373 1
2 ICRF J070232.8+854952 QSO 07 02 32.8197719664 +85 49 52.481305056       17.83   ~ 28 1
3 4C 71.07 QSO 08 41 24.3652863600 +70 53 42.171665460     16.5 16.8   ~ 733 1
4 9Y-MST J0849+6606 BLL 08 48 54.6221013864 +66 06 09.502599060       17.2   ~ 30 1
5 ICRF J095649.8+251516 Sy1 09 56 49.8756920040 +25 15 16.049435040   17.46 17.21 17.96   ~ 300 1
6 4C 55.17 QSO 09 57 38.1839604096 +55 22 57.754950636   18.24 17.89     ~ 399 1
7 8C 1003+830 BLL 10 10 15.7846320048 +82 50 14.382307680     18.30 17.61   ~ 52 1
8 ICRF J101447.0+230116 Sy1 10 14 47.0656249344 +23 01 16.569849468   17.85 17.78 16.22   ~ 185 1
9 6C 101357+613120 QSO 10 17 25.8872836992 +61 16 27.496642584   18.74 18.44 17.87   ~ 84 1
10 7C 1015+3557 QSO 10 18 10.9882954032 +35 42 39.437279604   18.62 18.07 17.65   ~ 161 1
11 6C 102947+375354 BLL 10 32 40.7210836656 +37 38 26.750635656   18.42 18.07 17.3   ~ 43 1
12 87GB 103431.3+572750 BLL 10 37 44.3078432736 +57 11 55.629345156   17.05 16.54 16.7   ~ 102 1
13 4C 06.41 BLL 10 41 17.1625746528 +06 10 16.926043944   16.86 16.70 16.14   ~ 291 1
14 6C 104451+715930 QSO 10 48 27.6198768456 +71 43 35.939809416     19.0 17.49   ~ 206 1
15 87GB 105148.6+222705 BLL 10 54 30.6250887672 +22 10 54.796074852 17.67 17.39 17.20 17.1   ~ 47 1
16 7C 1055+5644 BLL 10 58 37.7276569824 +56 28 11.207405028   16.80 16.31 14.58   ~ 187 2
17 [VV2006] J110424.1+073053 BLL 11 04 24.0713906136 +07 30 53.182155384   17.69 17.32     ~ 50 1
18 [VV98] J112125.1-055356 QSO 11 21 25.1078540352 -05 53 56.442818256   19.0       ~ 86 1
19 87GB 113011.5+005041 BLL 11 32 45.6184743144 +00 34 27.830851248 18.98 18.54 18.08 17.5   ~ 101 1
20 NGC 3894 SyG 11 48 50.3462619432 +59 24 56.450580480   12.9   11.57   ~ 226 1
21 QSO B1149-084 QSO 11 52 17.2093467696 -08 41 03.315008364     18.50 18   ~ 85 1
22 6C 120027+604804 BLL 12 03 03.5072095320 +60 31 19.163050032   16.82 16.04     ~ 111 1
23 2MASX J12041665-0710086 BLL 12 04 16.6649997552 -07 10 09.006821616   18.01 18.00 14.6   ~ 65 0
24 6C 121520+302351 BLL 12 17 52.0819904040 +30 07 00.634936872   16.07 15.62 13.47   ~ 440 1
25 QSO B1217+023 BLL 12 20 11.8846520568 +02 03 42.223956876   16.15 15.97 15.6   ~ 311 1
26 4C 04.42 QSO 12 22 22.5499375968 +04 13 15.776624496   17.88 17.98 17.06   ~ 282 1
27 QSO B1221+24 BLL 12 24 24.1862962656 +24 36 23.499792828   17.93 17.37     ~ 130 0
28 ICRF J123014.0+251807 BLL 12 30 14.0893292232 +25 18 07.136022996   15.6 14.5 14.78   ~ 130 1
29 ATLAS 16abn BLL 12 38 24.3897323184 -19 59 13.683431148           ~ 34 0
30 [VV2006] J124510.0+570954 BLL 12 45 09.9995503080 +57 09 54.373550040   18.33 17.96     ~ 52 1
31 LB 2449 BLL 12 48 18.7847605224 +58 20 28.717260720   16.10 15.78 15.19   ~ 165 1
32 6C 125058+531749 BLL 12 53 11.9204702472 +53 01 11.737422696   18.07 17.51 16.4   ~ 108 1
33 3C 279 Bla 12 56 11.1663795384 -05 47 21.528432492   18.01 17.75 15.87   ~ 2898 2
34 QSO B1334-127 QSO 13 37 39.7829208840 -12 57 24.693846264   18.5 18.5 16.22   ~ 461 1
35 QSO B1352-104 QSO 13 54 46.5187266264 -10 41 02.655156480   18.20 18.4     ~ 143 1
36 2FGL J1358.0+0137 BLL 13 57 38.6981776176 +01 28 13.630939788   18.62 18.01 17.5   ~ 41 0
37 6C 141804+543700 BLL 14 19 46.5974051952 +54 23 14.787857796   16.17 15.65 14.16   ~ 563 1
38 7C 1424+2401 BLL 14 27 00.3917926224 +23 48 00.037510776 14.52 14.34 14.95 14.5   ~ 322 1
39 8C 1435+638 QSO 14 36 45.8021325144 +63 36 37.866905244   17.06 16.86 16.23   ~ 199 1
40 4C -05.64 QSO 15 10 53.5915864584 -05 43 07.417490736   17.44 17.21     ~ 204 1
41 ICRF J151215.7+020316 Sy2 15 12 15.7418011536 +02 03 16.978221972   18.94 18.31 16.6   ~ 114 1
42 QSO J1512-0906 Bla 15 12 50.5330369584 -09 05 59.830296360   16.74 16.54     ~ 1239 1
43 QSO B1514+197 BLL 15 16 56.7965669256 +19 32 12.991197408 18.59 18.19 18.7 17.51   ~ 146 1
44 QSO J1526+6650 QSO 15 26 42.8744737248 +66 50 54.644414316   18.26 17.87 17.24   ~ 50 0
45 QSO B1542+614 BLL 15 42 56.9436243096 +61 29 55.346749080   16.9 16.25 16.6   ~ 113 1
46 3HSP J154849.8-225102 BLL 15 48 49.7496670200 -22 51 02.517679080       15.9   ~ 46 1
47 4C 05.64 QSO 15 50 35.2692689760 +05 27 10.455019380   19.10 18.73 19.02   ~ 305 1
48 7C 155054.79+581551.00 QSO 15 51 58.2078070152 +58 06 44.454684204   17.03 16.73 15.60   ~ 59 1
49 QSO B1553+113 BLL 15 55 43.0440048528 +11 11 24.365649948 14.91 14.72 14.57 13.99   ~ 495 1
50 7C 1557+5633 BLL 15 58 48.2889478488 +56 25 14.121578928   18.08 17.54 17.2   ~ 77 1
51 7C 1602+5739 QSO 16 03 55.9315808928 +57 30 54.414349524     18.3 16.94   ~ 80 1
52 7C 1603+5722 QSO 16 04 37.3548559224 +57 14 36.660126444   18.02 17.79 17.70   ~ 81 1
53 4C 10.45 QSO 16 08 46.2032041032 +10 29 07.779419592   18.5 18.0 18.03   ~ 358 1
54 [VV96] J162304.5+662401 QSO 16 23 04.5201307656 +66 24 01.069442928   19.477   17.430   ~ 59 1
55 7C 162332.79+565907.00 BLL 16 24 32.1794532480 +56 52 28.002722844   18.76 18.13 17.82   ~ 35 1
56 4C 38.41 QSO 16 35 15.4928147784 +38 08 04.499799360   18.14 17.97 17.25   ~ 809 1
57 4C 47.44 QSO 16 37 45.1298972640 +47 17 33.827280360   17.5   18.69   ~ 135 1
58 ICRF J163813.4+572023 Sy1 16 38 13.4562758136 +57 20 23.980140888     17.0 16.94   ~ 330 1
59 3C 345 QSO 16 42 58.8102993888 +39 48 37.002763188   16.81 16.59 16.84   ~ 1641 2
60 4FGL J1643.5-0646 BLL 16 43 28.9223009616 -06 46 19.767702828           ~ 33 0
61 ATO J252.3541+52.5875 BLL 16 49 24.9916367448 +52 35 14.997132672       17   ~ 39 1
62 4C 39.49 BLL 16 53 52.2160772976 +39 45 36.613228860 14.09 14.15 13.29 8.26   ~ 2037 2
63 ICRF J172244.5+101335 QSO 17 22 44.5825818264 +10 13 35.777038656       19.4   ~ 53 0
64 7C 172601.30+453309.00 BLL 17 27 27.6508316304 +45 30 39.731315580   19.0 19.0 16.64   ~ 184 1
65 7C 1749+7006 BLL 17 48 32.8402992264 +70 05 50.768819304   17.46 17.01 15.48   ~ 404 1
66 ICRF J174900.3+432151 BLL 17 49 00.3607426848 +43 21 51.281689644     18.21 19.84   ~ 82 1
67 ATO J268.5491+32.2064 BLL 17 54 11.7992994912 +32 12 23.055857100           ~ 41 1
68 8C 1803+784 BLL 18 00 45.6838528560 +78 28 04.018028016   16.4 16.4 15.46   ~ 701 1
69 3C 371 BLL 18 06 50.6802916920 +69 49 28.109609256   14.77 14.22 11.39   ~ 821 2
70 2MASS J18092544+2041308 BLL 18 09 25.4519567448 +20 41 30.904155564           ~ 34 0
71 ICRF J181333.4+061542 BLL 18 13 33.4116177456 +06 15 42.035846688       17.48   ~ 48 1
72 7C 181142.79+314318.00 BLL 18 13 35.2028439312 +31 44 17.620234836     17.4 15.2   ~ 89 1
73 4C 56.27 BLL 18 24 07.0679485560 +56 51 01.479645612   18.9 18.4 16.48   ~ 456 1
74 2MASS J18362123+3136268 BLL 18 36 21.2402805936 +31 36 26.730232848           ~ 38 1
75 ATO J279.7048+48.0428 BLL 18 38 49.1550459624 +48 02 34.274232744     17.60 16.2   ~ 71 0
76 2FGL J1844.7+5716 BLL 18 44 50.9619215088 +57 09 38.584130112           ~ 23 1
77 ICRF J184916.0+670541 Sy1 18 49 16.0719656904 +67 05 41.681210424     20 17.45   ~ 237 1
78 ICRF J185457.2+735119 Sy1 18 54 57.3000303816 +73 51 19.907445924     17.5 16.39   ~ 67 1
79 ICRF J190311.6+554038 BLL 19 03 11.6077129056 +55 40 38.450387568   18.1   16.4   ~ 83 1
80 6C 192647+611105 BLL 19 27 30.4428785736 +61 17 32.878880988   17.5 17.5 16.99   ~ 103 1
81 4C 73.18 BLL 19 27 48.4947009120 +73 58 01.572558816     15.5 15.11   ~ 509 2
82 QSO B1959+650 BLL 19 59 59.8520303688 +65 08 54.652536492     12.8 11.21   ~ 558 2
83 QSO B1958-179 QSO 20 00 57.0904184064 -17 48 57.674464236   18.02 17.46 15.33   ~ 239 1
84 8C 2007+777 BLL 20 05 30.9987913056 +77 52 43.248139536     16.5 17.36   ~ 424 1
85 QSO B2012-017 BLL 20 15 15.1579835136 -01 37 32.554493544 18.08 17.86 17.61 16.5   ~ 79 1
86 9Y-MST J2016-0904 BLL 20 16 24.033 -09 03 33.36           ~ 36 0
87 ICRF J202235.5+761126 BLL 20 22 35.5757966424 +76 11 26.171152728     18.10 17.54   ~ 78 1
88 ICRF J203015.1-062214 QSO 20 30 15.1390031 -06 22 14.933520       21.9   ~ 34 1
89 2MASS J20305712+1936130 BLL 20 30 57.1340134032 +19 36 12.930528420           ~ 27 1
90 2MASS J20390071-1046417 BLL 20 39 00.7103307384 -10 46 41.863534320 17.24 16.95 16.69 19.0   ~ 50 1
91 4C 74.26 Sy1 20 42 37.3079247456 +75 08 02.445851940     14.46 13.80   ~ 230 0
92 2FGL J2131.6-0914 BLL 21 31 35.4233915640 -09 15 23.693668272     18.00 17.5   ~ 56 0
93 ICRF J214335.5+174348 Sy1 21 43 35.5445200296 +17 43 48.786773700   15.91 15.73 15.17   ~ 365 1
94 ICRF J214622.9-152543 Sy1 21 46 22.9790702760 -15 25 43.888843632   17.70 17.27 17.20   ~ 116 1
95 QSO B2144+093 QSO 21 47 10.1628820968 +09 29 46.674940992   18.72 18.54 16.51   ~ 189 1
96 4C 06.69 QSO 21 48 05.4586454304 +06 57 38.602799388   16.85 16.47 15.06   ~ 631 1
97 2MASX J21494185+0322516 BLL 21 49 41.8698135840 +03 22 51.435422796 18.01 17.72 17.31     ~ 38 0
98 NAME BL Lac BLL 22 02 43.2913536816 +42 16 39.979416792   15.66 14.72     ~ 2143 1
99 ICRF J221700.8+242145 BLL 22 17 00.8214688632 +24 21 45.955318068       19.21   ~ 67 1
100 4C 11.69 QSO 22 32 36.4089639768 +11 43 50.904601176   17.75 17.33     ~ 1052 2
101 3C 454.3 Bla 22 53 57.7480438728 +16 08 53.561508864   16.57 16.10 15.22   ~ 2700 2
102 B2 2319+27 QSO 23 21 59.8620449256 +27 32 46.446347400   19 19.0 18.8   ~ 124 1
103 3FHL J2325.2+3957 BLL 23 25 17.8701567192 +39 57 36.512873352   17.8 17.80 17.8   ~ 63 1
104 2FGL J2341.7+8016 BLL 23 40 54.2290641384 +80 15 16.020826848     18.90 16.8   ~ 43 0

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2022.10.03-00:59:44

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