Constraining the origin of the long-term periodicity of FRB 20180916B with polarization position angle

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Table 1.

Measured properties from every observation.

Phase	Cycle	MJD	Sep	N	RM	ΔRM	⟨PA_∞⟩	ΔPA	Source	Correction
			h		rad m⁻²	rad m⁻²	deg	deg		deg
0.355	93	59894	1.3	4	−61.54	0.23	−51.93	3.86	J0139+5814	49.39
0.355	121	60352	0.0	1	−56.48	0.50	−10.49	4.94	J0139+5814	78.47
0.363	118	60303	2.1	11	−58.79	0.53	1.85	7.48	J0139+5814	69.94
0.396	99	59993	1.9	3	−52.63	0.36	−21.08	4.22	B0329+54	54.40
0.397	55	59274	0.0	1	−118.56	0.80	−12.49	3.92	B0329+54	61.42
0.400	73	59568	0.7	10	−68.97	0.48	−26.08	5.27	B0329+54	65.43
0.403	96	59944	2.6	5	−57.61	0.49	−30.65	4.85	B0329+54	47.88
0.453	55	59275	1.3	6	−113.04	0.39	−80.98	4.98	B0329+54	39.86
0.494	53	59243	4.1	39	−115.21	0.27	−35.86	6.27	B0329+54	65.93
0.562	53	59244	0.3	4	−113.64	0.56	−65.21	6.11	B0329+54	57.41

Notes. RM and ⟨PA_∞⟩ refer to Rotation Measure and Position Angle at infinite frequency fitted to all the bursts from one burst. ΔPA refers to the standard deviation of the PA_∞ of all the bursts from an observation. Cycle and Phase correspond to the activity cycle and activity phase of detection of bursts. Sep denotes the time separation between the first and the last burst of the observation. Source and Correction refer to the PA correcting astronomical source and the PA offset measured in degrees. N denotes the number of bursts detected in the observation.

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