New jet feature in the parsec-scale jet of the blazar OJ 287 connected to the 2017 teraelectronvolt flaring activity

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Volume 658 (February 2022)

A&A, 658 (2022) L10

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Table 1.

Summary of the model-fit parameters.

Obs. date	MJD	Comp. ID	S^(a)	σ_S^(b)	r^(c)	σ_r^(d)	PA ^(c)	FWHM^(e)
yy/mm/dd			(Jy)	(Jy)	(mas)	(mas)	(deg)	(mas)
2015/05/16	57158	Core	0.34	0.07	…	…	…..	0.006
		S1	0.32	0.06	0.07	0.01	−22.2	0.049
		S2	0.23	0.05	0.21	0.01	−46.2	0.051
		E	0.17	0.03	0.39	0.01	−40.9	0.122
2016/05/21	57529	Core	1.08	0.22	…	…	…..	0.017
		S1	0.53	0.11	0.10	0.01	−32.2	0.033
		S2	0.06	0.01	0.15	0.01	−68.4	0.004
2016/09/30	57661	Core	0.78	0.16	…	…	…..	0.006
		S1	2.00	0.40	0.11	0.01	−23.2	0.030
		S2	0.60	0.12	0.19	0.01	−42.8	0.090
		E	0.04	0.01	0.36	0.05	−83.5	0.095
2017/03/31	57843	Core	0.83	0.17	…	…	…	0.016
		S1	0.57	0.12	0.08	0.01	−41.8	0.005
		S2	0.25	0.05	0.29	0.01	−47.0	0.038
		K	1.39	0.28	0.16	0.01	−40.6	0.038
		E	0.06	0.02	0.38	0.05	−50.2	0.096
2017/09/29	58025	Core	0.58	0.12	…	…	…	0.041
		S1	0.81	0.16	0.09	0.01	−22.6	0.067
		S2	1.08	0.22	0.25	0.01	−24.3	0.068
		E	0.06	0.02	0.42	0.04	−39.6	0.040

Notes.

^(a)

Flux density (S) in Jy;

^(b)

uncertainties on S;

^(c)

r and PA represent the distance and position angle (from north to east) of the component in polar coordinates with respect to the core;

^(d)

uncertainties on r;

^(e)

radius of the circular Gaussian components.

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