Discovery of the preferred direction of electric vector position angle rotations in blazars

Open Access

Table 2.

Properties of the observed rotations.

1	2	3	4	5	6	7	8	9	10	11
Source	N_total	$N_{cw}^{ccw}$ $N^{\mathrm{ccw}}_{\mathrm{cw}}$	p-value	σ	${⟨ Δ χ ⟩}_{cw}^{ccw}$ $\langle \Delta\chi \rangle^{\mathrm{ccw}}_{\mathrm{cw}}$	${⟨ Δ t ⟩}_{cw}^{ccw}$ $\langle \Delta \mathrm{t} \rangle^{\mathrm{ccw}}_{\mathrm{cw}}$	${⟨ \bar{v} ⟩}_{cw}^{ccw}$ $\langle \overline{v}\rangle^{\mathrm{ccw}}_{\mathrm{cw}}$	${⟨ PD ⟩}_{cw}^{ccw}$ $\langle \mathrm{PD}\rangle^{\mathrm{ccw}}_{\mathrm{cw}}$	${⟨ \hat{PD} ⟩}_{cw}^{ccw}$ $\langle \widehat{\mathrm{PD}}\rangle^{\mathrm{ccw}}_{\mathrm{cw}}$	⟨PD⟩_out

					[°]	[d]	[°/d]	[%]	[%]	[%]
OJ 287	84	30	0.006	2.75	67 ± 11	14 ± 1	6 ± 1	14.9 ± 1.1	11.4 ± 2.4	14.7 ± 0.2
		54			54 ± 6	13 ± 1	6 ± 1	16.2 ± 0.8	12.5 ± 2.4
S5 0716+71	77	47	0.034	2.12	141 ± 19	18 ± 7	19 ± 3	8.0 ± 0.6	5.3 ± 0.7	8.9 ± 0.1
		30			143 ± 16	14 ± 3	16 ± 2	6.4 ± 0.7	6.6 ± 1.4
3C 454.3	50	33	0.016	2.41	186 ± 23	26 ± 6	11 ± 1	9.2 ± 0.9	5.7 ± 1.1	6.2 ± 0.1
		17			157 ± 37	23 ± 7	11 ± 3	9.1 ± 1.6	9.8 ± 3.9
CTA 102	31	9	0.015	2.43	209 ± 44	26 ± 18	30 ± 6	2.1 ± 0.3	2.4 ± 0.5	8.1 ± 0.2
		22			252 ± 49	43 ± 15	12 ± 2	3.1 ± 0.4	2.3 ± 0.4
PG 1553+113	14	12	0.006	2.75	153 ± 42	48 ± 11	4 ± 1	5.0 ± 0.6	3.9 ± 0.7	5.1 ± 0.1
		2			146 ± 70	22 ± 9	6 ± 1	5.4 ± 2.3	–

Notes. Column 1 lists the source name, Col. 2 the total number of rotations, Col. 3 the numbers of CCW and CW rotations, Col. 4 the estimate of the statistical significance of the asymmetry, Col. 5 the σ value, Col. 6 the mean rotation amplitude, Col. 7 the mean rotation duration, Col. 8 the mean rotation rate, Col. 9 the mean PD of rotations selected by our method, Col. 10 the mean PD of monotone rotations with an amplitude higher than 90°, and Col. 11 the mean PD out of rotations. Columns 6–10 list the corresponding values separately for the CCW and CW rotations.

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