Artículo
Variable broad lines and outflow in the weak blazar PBC J2333.9-2343
Fecha
2018-08Registro en:
Monthly Notices of the Royal Astronomical Society, 478(4), pp. 4634-4640
0035-8711
DOI: 10.1093/mnras/sty1345
Autor
Hernández-García, L.
Vietri, G.
Panessa, F.
Piconcelli, E.
Chavushyan, V.
Jiménez-Andrade, E.F.
Bassani, L.
Bazzano, A.
Cazzoli, S.
Malizia, A.
Masetti, N.
Monaco, L.
Pović, M.
Saviane, I.
Ubertini, P.
Institución
Resumen
PBC J2333.9-2343 is a peculiar active nucleus with two giant radio lobes and a weak blazarlike nucleus at their centre. In this work we show new optical, ultraviolet (UV), and X-ray data taken from the San Pedro Mártir telescope, the New Technology Telescope, NTT/EFOSC2, and the Swift/XRT satellite. The source is highly variable at all frequencies, in particular the strongest variations are found in the broad Hα component with a flux increase of 61±4 per cent between 2009 and 2016, following the X-ray flux increase of 62±6 per cent between 2010 and 2016. We also detected a broad Hβ component in 2016, making the optical classification change from type 1.9 to type 1.8 in 1 yr. We have also detected a broad component of the [OIII]λ5007 line, which is blue-shifted and of high velocity, suggesting an origin from a highly disturbed medium, possibly an outflow. The line flux variability and broad widths are indicative of a jet that is, at least in part, responsible for the ionization of the broad line region (BLR) and narrow line region (NLR). © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society.