Browsing Institutt for teoretisk astrofysikk by Author "Calabretto, Paolo"

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  • The optically elusive, changing-look active nucleus in NGC 4156 
    Tozzi, Giulia; Lusso, Elisabeta; Casetti, Lapo; Romoli, Marco; Andreuzzi, Gloria; Montoya Arroyave, Isabel; Nardini, Emanuele; Cresci, Giovanni; Middei, Riccardo; Bertolini, Silvia; Calabretto, Paolo; Cammelli, Vieri; Cuadra, Francisco; Dalla Ragione, Marco; Marconcini, Cosimo; Miceli, Adriano; Mini, Irene; Palazzini, Martina; Rotellini, Giorgio; Saccardi, Andrea; Samà, Lavinia; Sangalli, Mattia; Serafini, Lorenzo; Spaccino, Fabio (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    We report on the changing-look nature of the active galactic nucleus (AGN) in the galaxy NGC 4156, which was serendipitously discovered thanks to data acquired in 2019 at the Telescopio Nazionale Galileo (TNG) during a ...