Variable broad lines and outflow in the weak blazar PBC J2333.9−2343. Issue 4 (18th May 2018)

• Record Type: Journal Article
• Authors: 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
• Is Part Of: Monthly notices of the Royal Astronomical Society. Volume 478:Issue 4(2018)
• Page Start: 4634
• Page End: 4640
• Publication Date: 2018-05-18
• Subjects: galaxies: active -- galaxies: individual: PBC J2333.9−2343 -- galaxies: jets; Astronomy -- Periodicals; Periodicals; 520.5
• DOI: 10.1093/mnras/sty1345
• Languages: English
• ISSNs: 0035-8711

Abstract

ABSTRACT: PBC J2333.9−2343 is a peculiar active nucleus with two giant radio lobes and a weak blazar-like 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).