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In the next few years the classification of radio sources observed by the large surveys will be a challenging problem and spectral index is a powerful tool for addressing it. Here we present an algorithm to estimate the spectral index of sources from multiwavelength radio images. We have applied ...


Cavallaro, F.Trigilio, C.Umana, G.Franzen, T.M.O.Norris, R.P.Leto, P.Ingallinera, A.Buemi, C.S.Marvil, J.Agliozzo, C.Bufano, F.Cerrigone, L.Riggi, S.[SCORPIO - II. Spectral indices of weak Galactic radio sources]SCORPIO - II. Spectral indices of weak Galactic radio sources

Context. The giant radio galaxy PBC J2333.9-2343 shows different characteristics at different wavebands that are difficult to explain within the actual generic schemes of unification of active galactic nuclei (AGN). It is therefore a good candidate host for different phases of nuclear activity. ...


Hernández-García, L.Panessa, F.Giroletti, M.Ghisellini, G.Bassani, L.Masetti, N.Pović, M.Bazzano, A.Ubertini, P.Malizia, A.Chavushyan, V.[Restarting activity in the nucleus of PBC J2333.9-2343 An extreme case of jet realignment]Restarting activity in the nucleus of PBC J2333.9-2343 An extreme case of jet realignment

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