Catching the radio flare in CTA 102 - III. Core-shift and spectral analysis

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Table 11

Image parameters used for the spectral analysis.

Region	r	ν	Beam	ps	uv-range
	[mas]	[GHz]	[mas]	[mas]	Mλ

C	0–1	15–43	0.95 × 0.33, −13°	0.03	27–450
C^a	0–1	15–86	0.95 × 0.33, −13°	0.03	66–450
D^b	1–4	5–22	1.33 × 0.52, −9°	0.04	14–144
B	4–8	5–15	2.32 × 0.97, −7°	0.10	9–144
A2	8–14	5–15	3.65 × 1.52, −8°	0.15	9–144
A1^c	14–20	5–8	3.65 × 1.52, −8°	0.15	9–144
B+A^d	4–20	5–43	3.65 × 1.52, −8°	0.10	27–144

Notes.

^(a)

Used to extract turnover values for 2005.39;

^(b)

used to extract turnover values;

^(c)

no fitting, spectral index computed between two frequencies;

^(d)

test of influence of frequency range on α.

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