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Multiwavelength monitoring of the nucleus in PBC J2333.9–2343: A giant radio galaxy with a Blazar-like core

Published online by Cambridge University Press:  11 September 2023

L. Hernández-García Open the ORCID record for L. Hernández-García [Opens in a new window] ,
F. Panessa ,
G. Bruni ,
L. Bassani ,
P. Arévalo ,
V. M. Patiño-Alvarez ,
A. Tramacere ,
P. Lira ,
P. Sánchez-Sáez  and
F. E. Bauer
...Show all authors
L. Hernández-García
Affiliation:
Millennium Institute of Astrophysics (MAS), Nuncio Monseñor Sótero Sanz 100, Providencia, Santiago, Chile email: lorena.hernandez@uv.cl Instituto de Física y Astronomía, Facultad de Ciencias, Universidad de Valparaíso, Gran Bretaña No. 1111, Playa Ancha, Valparaíso, Chile
F. Panessa
Affiliation:
INAF - Istituto di Astrofisica e Planetologia Spaziali, via Fosso del Cavaliere 100, I-00133 Roma, Italy
G. Bruni
Affiliation:
INAF - Istituto di Astrofisica e Planetologia Spaziali, via Fosso del Cavaliere 100, I-00133 Roma, Italy
L. Bassani
Affiliation:
INAF - Osservatorio di Astrofisica e Scienza dello Spazio, via P. Gobetti 101, I-40129 Bologna, Italy
P. Arévalo
Affiliation:
Instituto de Física y Astronomía, Facultad de Ciencias, Universidad de Valparaíso, Gran Bretaña No. 1111, Playa Ancha, Valparaíso, Chile Millennium Nucleus on Transversal Research and Technology to Explore Supermassive Black Holes (TITANS)
V. M. Patiño-Alvarez
Affiliation:
Instituto Nacional de Astrofísica, Optica y Electrónica, Luis Enrique Erro 1, Tonantzintla, Puebla 72840, México Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany
A. Tramacere
Affiliation:
Department of Astronomy, University of Geneva, Ch. d’ Écogia 16, Versoix, 1290, Switzerland
P. Lira
Affiliation:
Millennium Nucleus on Transversal Research and Technology to Explore Supermassive Black Holes (TITANS) Departamento de Astronomía, Universidad de Chile, Casilla 36D, Santiago, Chile
P. Sánchez-Sáez
Affiliation:
Millennium Institute of Astrophysics (MAS), Nuncio Monseñor Sótero Sanz 100, Providencia, Santiago, Chile email: lorena.hernandez@uv.cl European Southern Observatory, Karl-Schwarzschild-Str. 2, 85748, Garching, Germany
F. E. Bauer
Affiliation:
Millennium Institute of Astrophysics (MAS), Nuncio Monseñor Sótero Sanz 100, Providencia, Santiago, Chile email: lorena.hernandez@uv.cl Instituto de Astrofísica and Centro de Astroingeniería, Facultad de Física, Pontificia Universidad Católica de Chile, Casilla 306, Santiago 22, Chile Space Science Institute, 4750 Walnut Street, Suite 205, Boulder, CO 80301, USA
V. Chavushyan
Affiliation:
Instituto Nacional de Astrofísica, Optica y Electrónica, Luis Enrique Erro 1, Tonantzintla, Puebla 72840, México Center for Astrophysics | Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA
R. Carraro
Affiliation:
Instituto de Física y Astronomía, Facultad de Ciencias, Universidad de Valparaíso, Gran Bretaña No. 1111, Playa Ancha, Valparaíso, Chile
F. Förster
Affiliation:
Millennium Institute of Astrophysics (MAS), Nuncio Monseñor Sótero Sanz 100, Providencia, Santiago, Chile email: lorena.hernandez@uv.cl Data and Artificial Intelligence Initiative (IDIA), Faculty of Physical and Mathematical Sciences, University of Chile, Chile Center for Mathematical Modeling (CMM), Universidad de Chile, Beauchef 851, Santiago 8320000, Chile
A. M. Muñoz Arancibia
Affiliation:
Millennium Institute of Astrophysics (MAS), Nuncio Monseñor Sótero Sanz 100, Providencia, Santiago, Chile email: lorena.hernandez@uv.cl Center for Mathematical Modeling (CMM), Universidad de Chile, Beauchef 851, Santiago 8320000, Chile
P. Ubertini
Affiliation:
INAF - Istituto di Astrofisica e Planetologia Spaziali, via Fosso del Cavaliere 100, I-00133 Roma, Italy
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Abstract

We present an observational multiwavelength campaign during 2018–19 for PBC J2333.9–2343, a giant radio galaxy with a bright central core associated to a blazar nucleus, whose structure could be due to a significant jet reorientation. We report flux increases by a factor of two or more on timescales shorter than a month, resembling flaring events. The cross correlation between the NIR and optical bands shows quasi-simultaneous variations arising from the jet. The optical variability properties of PBC J2333.9–2343 are more comparable to a sample of blazars than to non-blazar AGN. The SED of the nucleus shows two peaks, with a derived jet angle of 3 degrees, also typical of a blazar. Therefore, we confirm the presence of a blazar-like core in the center of this galaxy.

Keywords

galaxies: activegalaxies: nucleigalaxies: variability
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 17 , Symposium S375: The Multimessenger Chakra of Blazar Jets , December 2021 , pp. 9 - 13
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Copyright
© The Author(s), 2023. Published by Cambridge University Press on behalf of International Astronomical Union

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