250px-Logo_universidad_de_valparaiso_2008.svg

The peculiar case of the active galactic nucleus in PBC J2333.9-2343 – 17 Settembre 2018, ore 11:00 Aula Gratton

Euniversity of VALPARAISO – CHILE

Lorena Hernandez

Abstract

Under unification schemes, active galactic nuclei (AGN) can be explained by orientation effects. However, some sources show properties at different

frequencies that led to incongruent classifications and cannot be explained by such unification scheme. This is the case of PBC J2333.9-2343; its optical

pectrum is of a type 2 AGN but its X-ray spectrum does not show signs of absorption, and in the radio it has many features typical of a blazar but it is a giant

radio galaxy. Using multiwavelength simultaneous data from XMM-Newton, San Pedro Mártir telescope and VLBA, we find that these classifications cannot

be attributed to variability. We propose that PBC J2333.2343 is a blazar that has undergone a restarting activity episode in its nucleus. Interestingly, it has

changed from being a radio galaxy to become a blazar, showing an exceptional change in the direction of the jet that, by chance, occurred in the plane of the sky.

Moreover, we have analyzed Swift and New Technology Telescope (NTT) data to study the variability of the source, revealing a change in the broad line region

BLR) clouds and increasing variability at all observed wavelengths and we have detected an outflow in its optical spectra.

Area Tor Vergata – IAPS
Via Fosso Del Cavaliere, 100

0 commenti

Lascia un Commento

Want to join the discussion?
Feel free to contribute!

Lascia una risposta

L'indirizzo email non verrà pubblicato. I campi obbligatori sono contrassegnati *