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Table 1

Linear polarization of 93 quasars.

Object z LQG Date q u p σ p p 0 θ σ θ Notes
(%) (%) (%) (%) (%) (°) (°)
SDSSJ104938.22+214829.3 1.2352 1 2014 Mar. 25 –0.02 0.00 0.02 0.07 0.00 − −
SDSSJ105140.40+203921.1 1.1742 1 2014 Mar. 22 –0.01 –0.14 0.14 0.06 0.13 133 13
SDSSJ105224.08+204634.1 1.2032 1 2014 Mar. 23 –0.18 –0.02 0.18 0.10 0.16 93 18
SDSSJ105258.16+201705.4 1.2526 1 2014 Mar. 23 –0.09 0.24 0.26 0.21 0.19 55 32
SDSSJ105421.90+212131.2 1.2573 1 2014 Mar. 23 –1.04 –0.09 1.04 0.08 1.04 93 2
SDSSJ105446.73+195710.5 1.2195 1 2014 Mar. 22 –1.64 0.93 1.89 0.23 1.88 75 4
SDSSJ105525.18+191756.3 1.2005 1 2014 Mar. 23 –0.16 0.34 0.38 0.13 0.36 58 10
SDSSJ105556.22+184718.4 1.2767 1 2014 Mar. 23 0.08 0.02 0.08 0.12 0.00 − −
SDSSJ105611.27+170827.5 1.3316 1 2014 Mar. 25 0.01 1.29 1.29 0.08 1.29 45 2
SDSSJ105714.02+184753.3 1.2852 1 2014 Mar. 24 –0.02 –0.05 0.05 0.09 0.00 − −
SDSSJ105805.09+200341.0 1.2731 1 2014 Mar. 23 0.13 0.17 0.21 0.09 0.19 26 13
SDSSJ105832.01+170456.0 1.2813 1 2014 Mar. 22 –0.35 –0.09 0.36 0.16 0.33 97 14
SDSSJ105840.49+175415.5 1.2687 1 2014 Mar. 24 0.14 –0.24 0.28 0.11 0.26 150 12
SDSSJ105928.57+164657.9 1.2993 1 2014 Mar. 24 0.02 0.24 0.24 0.15 0.20 43 21
SDSSJ110016.88+193624.7 1.2399 1 2014 Mar. 22 0.88 –0.72 1.14 0.23 1.12 160 6
SDSSJ110039.99+165710.3 1.2997 1 2014 Mar. 22 –0.06 0.16 0.17 0.12 0.14 56 25
SDSSJ104139.15+143530.2 1.2164 2 2014 Mar. 22 –0.21 0.14 0.25 0.16 0.21 73 22
SDSSJ104321.62+143600.2 1.2660 2 2014 Mar. 24 –0.19 –0.11 0.22 0.10 0.20 105 14
SDSSJ104430.92+160245.0 1.2294 2 2014 Mar. 22 –0.08 0.04 0.09 0.07 0.07 76 30
SDSSJ104445.03+151901.6 1.2336 2 2014 Mar. 23 1.13 –0.53 1.25 0.11 1.25 168 3
SDSSJ104520.62+141724.2 1.2650 2 2014 Mar. 23 0.19 0.01 0.19 0.12 0.16 1 22
SDSSJ104604.05+140241.2 1.2884 2 2014 Mar. 22 –0.17 0.50 0.53 0.15 0.51 54 8
SDSSJ104616.31+164512.6 1.2815 2 2014 Mar. 24 –1.24 0.13 1.25 0.11 1.25 87 3
SDSSJ104624.25+143009.1 1.3620 2 2014 Mar. 23 –0.04 –0.20 0.20 0.10 0.18 129 16
SDSSJ104813.63+162849.1 1.2905 2 2014 Mar. 22 –0.04 0.16 0.17 0.12 0.14 53 25
SDSSJ104859.74+125322.3 1.3597 2 2014 Mar. 25 –0.02 0.72 0.72 0.13 0.71 46 5
SDSSJ104915.66+165217.4 1.3459 2 2014 Mar. 23 –0.14 –0.51 0.53 0.09 0.52 127 5
SDSSJ104922.60+154336.1 1.2590 2 2014 Mar. 22 –0.26 0.03 0.26 0.15 0.22 87 19
SDSSJ104924.30+154156.0 1.2965 2 2014 Mar. 25 –0.14 0.16 0.21 0.12 0.18 66 19
SDSSJ104941.67+151824.6 1.3390 2 2014 Mar. 24 0.51 –1.21 1.31 0.13 1.30 146 3
SDSSJ104947.77+162216.6 1.2966 2 2014 Mar. 22 0.13 –0.01 0.13 0.14 0.00 − −
SDSSJ104954.70+160042.3 1.3373 2 2014 Mar. 23 –0.21 –0.29 0.36 0.17 0.32 117 15
SDSSJ105001.22+153354.0 1.2500 2 2014 Mar. 25 –0.03 –0.02 0.03 0.11 0.00 − −
SDSSJ105042.26+160056.0 1.2591 2 2014 Mar. 25 0.01 0.20 0.20 0.08 0.18 44 12
SDSSJ105104.16+161900.9 1.2502 2 2014 Mar. 22 0.24 –0.01 0.24 0.10 0.22 179 13
SDSSJ105117.00+131136.0 1.3346 2 2014 Mar. 23 –0.37 0.46 0.59 0.22 0.55 64 11
SDSSJ105119.60+142611.4 1.3093 2 2014 Mar. 25 0.18 0.03 0.18 0.10 0.16 5 18
SDSSJ105122.98+115852.3 1.3085 2 2014 Mar. 23 0.01 –0.02 0.02 0.10 0.00 − −
SDSSJ105125.72+124746.3 1.2810 2 2014 Mar. 25 0.08 –0.06 0.10 0.08 0.07 160 31 RadioS
SDSSJ105132.22+145615.1 1.3607 2 2014 Mar. 22 –0.40 0.15 0.43 0.10 0.42 80 7
SDSSJ105144.88+125828.9 1.3153 2 2014 Mar. 25 0.21 0.13 0.25 0.07 0.24 15 8 RadioS
SDSSJ105210.02+165543.7 1.3369 2 2014 Mar. 24 –0.16 –0.23 0.28 0.09 0.27 117 10
SDSSJ105222.13+123054.1 1.3162 2 2014 Mar. 24 –0.08 0.32 0.33 0.13 0.31 52 12
SDSSJ105223.68+140525.6 1.2483 2 2014 Mar. 22 0.27 0.41 0.49 0.11 0.48 28 7
SDSSJ105245.80+134057.4 1.3544 2 2014 Mar. 25 0.65 1.15 1.32 0.11 1.32 30 2 RadioS
SDSSJ105257.17+105933.5 1.2649 2 2014 Mar. 24 0.54 –0.15 0.56 0.11 0.55 172 6
SDSSJ105412.67+145735.2 1.2277 2 2014 Mar. 24 –0.18 –0.32 0.37 0.10 0.36 121 8 RadioS
SDSSJ105435.64+101816.3 1.2600 2 2014 Mar. 24 –0.03 0.09 0.10 0.08 0.07 55 31
SDSSJ105442.71+104320.6 1.3348 2 2014 Mar. 24 0.71 –0.18 0.73 0.11 0.72 173 4
SDSSJ105523.03+130610.7 1.3570 2 2014 Mar. 25 0.03 0.00 0.03 0.10 0.00 − −
SDSSJ105525.68+113703.0 1.2893 2 2014 Mar. 24 –0.36 2.52 2.55 0.10 2.55 49 1 RadioS
SDSSJ105541.83+111754.2 1.3298 2 2014 Mar. 25 –0.45 0.01 0.45 0.11 0.44 89 7
SDSSJ105621.90+143401.0 1.2333 2 2014 Mar. 23 –0.42 0.13 0.44 0.13 0.42 82 9
SDSSJ105637.49+150047.5 1.3713 2 2014 Mar. 25 –0.37 0.46 0.59 0.16 0.57 65 8
SDSSJ105637.98+100307.2 1.2730 2 2014 Mar. 23 –0.08 0.16 0.18 0.12 0.15 58 23
SDSSJ105655.36+144946.2 1.2283 2 2014 Mar. 24 –0.14 –0.05 0.15 0.13 0.10 99 39
SDSSJ105855.33+081350.7 1.2450 3 2014 Mar. 23 –0.01 0.29 0.29 0.09 0.28 46 9
SDSSJ110006.02+092638.7 1.2485 3 2014 Mar. 22 0.17 0.14 0.22 0.09 0.20 19 13
SDSSJ110148.66+082207.1 1.1940 3 2014 Mar. 24 0.10 –0.19 0.22 0.14 0.18 149 22
SDSSJ110217.19+083921.1 1.2355 3 2014 Mar. 23 0.35 –0.02 0.35 0.12 0.33 178 10
SDSSJ110504.46+084535.3 1.2371 3 2014 Mar. 25 0.10 –0.10 0.14 0.10 0.11 157 26
SDSSJ110621.40+084111.2 1.2346 3 2014 Mar. 22 0.09 0.10 0.14 0.15 0.00 − −
SDSSJ110736.60+090114.7 1.2266 3 2014 Mar. 22 –0.42 0.08 0.43 0.11 0.42 85 8 RadioS
SDSSJ110744.61+095526.9 1.2228 3 2014 Mar. 25 0.44 0.25 0.51 0.08 0.50 15 5
SDSSJ111007.89+104810.3 1.2097 3 2014 Mar. 23 0.01 0.55 0.55 0.12 0.54 45 6
SDSSJ111009.58+075206.8 1.2123 3 2014 Mar. 24 0.67 1.68 1.81 0.17 1.80 34 3
SDSSJ111416.17+102327.5 1.2053 3 2014 Mar. 26 0.26 0.02 0.26 0.08 0.25 3 9
SDSSJ111545.30+081459.8 1.1927 3 2014 Mar. 24 –0.30 0.16 0.34 0.14 0.31 76 13
SDSSJ111802.11+103302.4 1.2151 3 2014 Mar. 23 1.01 –3.84 3.97 0.10 3.97 142 1
SDSSJ111823.21+090504.9 1.1923 3 2014 Mar. 24 –0.10 –0.01 0.10 0.18 0.00 − −
SDSSJ112019.62+085905.1 1.2239 3 2014 Mar. 23 0.38 –0.15 0.41 0.13 0.39 170 10
SDSSJ112059.27+101109.2 1.2103 3 2014 Mar. 24 0.44 0.29 0.53 0.22 0.49 17 13
SDSSJ112109.76+075958.6 1.2369 3 2014 Mar. 25 –0.01 0.33 0.33 0.08 0.32 46 7
SDSSJ104114.06+034312.0 1.2633 4 2014 Mar. 26 –0.26 0.41 0.49 0.16 0.46 61 10 BAL
SDSSJ104115.58+051345.0 1.2553 4 2014 Mar. 26 –0.14 0.27 0.30 0.13 0.27 59 14
SDSSJ104116.79+035511.4 1.2444 4 2014 Mar. 26 –1.46 –0.51 1.55 0.11 1.55 100 2 LoBAL
SDSSJ104225.63+035539.1 1.2293 4 2014 Mar. 26 0.48 0.50 0.69 0.08 0.69 23 3
SDSSJ104256.38+054937.4 1.3555 4 2014 Mar. 26 0.20 –0.36 0.41 0.12 0.39 149 9
SDSSJ104425.80+060925.6 1.2523 4 2014 Mar. 26 –0.36 –0.20 0.41 0.11 0.40 105 8 BAL
SDSSJ104637.30+075318.7 1.3635 4 2014 Mar. 26 0.04 0.09 0.10 0.07 0.08 34 25 RadioS
SDSSJ104733.16+052454.9 1.3341 4 2014 Mar. 26 0.04 –0.19 0.19 0.07 0.18 142 11
SDSSJ105010.05+043249.1 1.2158 4 2014 Mar. 26 –2.46 –1.04 2.67 0.08 2.67 102 1 RadioS
SDSSJ105018.10+052826.4 1.3067 4 2014 Mar. 26 –0.11 0.24 0.26 0.10 0.24 57 12
SDSSJ105422.47+033719.3 1.2278 4 2014 Mar. 26 –0.18 –0.28 0.33 0.11 0.31 118 10 RadioS
SDSSJ105423.26+051909.8 1.2785 4 2014 Mar. 26 0.13 0.22 0.26 0.09 0.25 30 11 BAL
SDSSJ105512.23+061243.9 1.3018 4 2014 Mar. 26 –0.61 –0.77 0.98 0.12 0.97 116 4
SDSSJ105534.66+033028.8 1.2495 4 2014 Mar. 26 –0.09 0.38 0.39 0.09 0.38 52 7
SDSSJ105537.63+040520.0 1.2619 4 2014 Mar. 26 –0.10 0.02 0.10 0.11 0.00 − −
SDSSJ105719.23+045548.2 1.3355 4 2014 Mar. 26 –0.36 0.44 0.57 0.13 0.56 65 7 RadioS
SDSSJ105821.28+053448.9 1.2540 4 2014 Mar. 26 0.09 0.06 0.11 0.10 0.06 15 47
SDSSJ105833.86+055440.2 1.3222 4 2014 Mar. 25 0.15 0.60 0.62 0.21 0.59 38 10
SDSSJ110108.00+043849.6 1.2516 4 2014 Mar. 25 0.52 0.66 0.84 0.10 0.83 26 3
SDSSJ110412.00+044058.2 1.2554 4 2014 Mar. 25 0.15 –0.08 0.17 0.11 0.14 167 22

Notes. Column 1 gives the quasar SDSS name, Col. 2 the redshift z, Col. 3 the quasar group (1, 2, 3 = Huge-LQG, 4 = CCLQG; see also Fig. 4), Col. 4 the observation date, Cols. 5, 6 the q and u normalized Stokes parameters corrected for the offset angle, Col. 7 the polarization degree p, Col. 8 the error on the polarization degree σp ≃ σq ≃ σu, Col. 9 the polarization degree p0 debiased according to the Wardle & Kronberg (1974) method (see also Simmons & Stewart 1985), Col. 10 the polarization position angle θ, defined between 0° and 180° and measured in the equatorial coordinate system (north = 0° and east = 90°), and Col. 11 the error on the polarization angle estimated using σθ = 28.65° σp/p0 to avoid underestimation at low signal-to-noise (Wardle & Kronberg 1974). Additional characteristics of the targets were retrieved from the NASA/IPAC Extragalactic Database (NED) and given in Col. 12: radio-source (RadioS), broad absorption line (BAL) quasar, and low-ionization BAL (LoBAL) quasar.

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