Table 3. Open in new tab Main parameters...

Epoch	Frequency	Total flux density, S	Map I peak	Map noise, σ_I	B_maj	B_min	B_PA
2007-02-09	22.2	579	411	0.8	3.2	1.1	−4.7
	15.4	727	373	0.3	2.5	0.6	−15.4
	8.3	1271	623	0.3	3.8	1.2	−8.3
	4.8	1582	725	0.8	7.2	2.2	−6.9
	2.3	1857	897	1.2	23	8.6	10.6
	1.5	1699	757	2.6	46	17	14.7
2007-05-23	22.2	523	425	1.0	4.2	1.6	21.1
	15.4	792	389	0.2	1.6	0.5	−8.3
	8.3	1275	662	0.3	2.7	1.0	−2.4
	4.8	1758	728	0.4	4.8	1.7	−0.3
	2.3	2256	981	0.8	19.4	6.3	19.8
	1.5	1752	714	1.8	37	13.5	14.1
2007-08-03	15.4	784	391	0.2	1.5	0.6	−4.5
	8.3	1299	713	0.2	3.3	1.2	−5.9
	4.8	1795	921	0.6	5.8	2.3	−2.1
	2.3	2018	1100	1.4	25	9.5	6.5
	1.5	1712	744	1.2	43	16	11.8
2017-05-27	8.3	981	428	0.5	2.9	0.9	5.9
2018-04-08	8.3	1049	393	0.5	2.0	0.8	−0.1
2017-07-21	8.3	1037	450	0.3	2.4	0.9	0.7

Epoch	Frequency	Total flux density, S	Map I peak	Map noise, σ_I	B_maj	B_min	B_PA
2007-02-09	22.2	579	411	0.8	3.2	1.1	−4.7
	15.4	727	373	0.3	2.5	0.6	−15.4
	8.3	1271	623	0.3	3.8	1.2	−8.3
	4.8	1582	725	0.8	7.2	2.2	−6.9
	2.3	1857	897	1.2	23	8.6	10.6
	1.5	1699	757	2.6	46	17	14.7
2007-05-23	22.2	523	425	1.0	4.2	1.6	21.1
	15.4	792	389	0.2	1.6	0.5	−8.3
	8.3	1275	662	0.3	2.7	1.0	−2.4
	4.8	1758	728	0.4	4.8	1.7	−0.3
	2.3	2256	981	0.8	19.4	6.3	19.8
	1.5	1752	714	1.8	37	13.5	14.1
2007-08-03	15.4	784	391	0.2	1.5	0.6	−4.5
	8.3	1299	713	0.2	3.3	1.2	−5.9
	4.8	1795	921	0.6	5.8	2.3	−2.1
	2.3	2018	1100	1.4	25	9.5	6.5
	1.5	1712	744	1.2	43	16	11.8
2017-05-27	8.3	981	428	0.5	2.9	0.9	5.9
2018-04-08	8.3	1049	393	0.5	2.0	0.8	−0.1
2017-07-21	8.3	1037	450	0.3	2.4	0.9	0.7

Table 3.

Main parameters of the Stokes I VLBA maps.

Epoch	Frequency	Total flux density, S	Map I peak	Map noise, σ_I	B_maj	B_min	B_PA
	(GHz)	(mJy)	(mJy beam⁻¹)	(mJy beam⁻¹)	(mas)	(mas)	(deg)
2007-02-09	22.2	579	411	0.8	3.2	1.1	−4.7
	15.4	727	373	0.3	2.5	0.6	−15.4
	8.3	1271	623	0.3	3.8	1.2	−8.3
	4.8	1582	725	0.8	7.2	2.2	−6.9
	2.3	1857	897	1.2	23	8.6	10.6
	1.5	1699	757	2.6	46	17	14.7
2007-05-23	22.2	523	425	1.0	4.2	1.6	21.1
	15.4	792	389	0.2	1.6	0.5	−8.3
	8.3	1275	662	0.3	2.7	1.0	−2.4
	4.8	1758	728	0.4	4.8	1.7	−0.3
	2.3	2256	981	0.8	19.4	6.3	19.8
	1.5	1752	714	1.8	37	13.5	14.1
2007-08-03	15.4	784	391	0.2	1.5	0.6	−4.5
	8.3	1299	713	0.2	3.3	1.2	−5.9
	4.8	1795	921	0.6	5.8	2.3	−2.1
	2.3	2018	1100	1.4	25	9.5	6.5
	1.5	1712	744	1.2	43	16	11.8
2017-05-27	8.3	981	428	0.5	2.9	0.9	5.9
2018-04-08	8.3	1049	393	0.5	2.0	0.8	−0.1
2017-07-21	8.3	1037	450	0.3	2.4	0.9	0.7

Epoch	Frequency	Total flux density, S	Map I peak	Map noise, σ_I	B_maj	B_min	B_PA
	(GHz)	(mJy)	(mJy beam⁻¹)	(mJy beam⁻¹)	(mas)	(mas)	(deg)
2007-02-09	22.2	579	411	0.8	3.2	1.1	−4.7
	15.4	727	373	0.3	2.5	0.6	−15.4
	8.3	1271	623	0.3	3.8	1.2	−8.3
	4.8	1582	725	0.8	7.2	2.2	−6.9
	2.3	1857	897	1.2	23	8.6	10.6
	1.5	1699	757	2.6	46	17	14.7
2007-05-23	22.2	523	425	1.0	4.2	1.6	21.1
	15.4	792	389	0.2	1.6	0.5	−8.3
	8.3	1275	662	0.3	2.7	1.0	−2.4
	4.8	1758	728	0.4	4.8	1.7	−0.3
	2.3	2256	981	0.8	19.4	6.3	19.8
	1.5	1752	714	1.8	37	13.5	14.1
2007-08-03	15.4	784	391	0.2	1.5	0.6	−4.5
	8.3	1299	713	0.2	3.3	1.2	−5.9
	4.8	1795	921	0.6	5.8	2.3	−2.1
	2.3	2018	1100	1.4	25	9.5	6.5
	1.5	1712	744	1.2	43	16	11.8
2017-05-27	8.3	981	428	0.5	2.9	0.9	5.9
2018-04-08	8.3	1049	393	0.5	2.0	0.8	−0.1
2017-07-21	8.3	1037	450	0.3	2.4	0.9	0.7

Notes . Total flux density S was calculated as a sum of clean components. B_maj and B_min are the major and minor axes full width at half maximum (FWHM) of the restoring beam, respectively. B_PA is the position angle of the beam. We do not show the parameters of the 22.2 GHz map from the epoch 2007-08-03, since we were not able to reconstruct the image at this frequency due to problems with the data (see Section 2 and Table 1).

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