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Home All issues Volume 710 (June 2026) A&A, 710 (2026) A63 Full HTML
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Fig. 2.

Fig. 2. Refer to the following caption and surrounding text.

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Spectra of the two KVN-resolved components in 3C 138 on 2024 December 12. Open circles denote the western component (core), fitted with an SSA model (dash-dotted green curve), with turnover frequency νm, peak flux density Sm, and optically thin spectral index α0. Filled squares denote the eastern component (jet knot), fitted with a PL model (dashed orange line) with spectral index αPL. Error bars indicate 1σ uncertainties.

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