Detection of a quasi-periodic oscillation in the optical light curve of the remarkable blazar AO 0235+164-Reference-Cited by-同舟云学术

Detection of a quasi-periodic oscillation in the optical light curve of the remarkable blazar AO 0235+164

Published:2022-05-10 Issue:4 Volume:513 Page:5238-5244
ISSN:0035-8711
Container-title:Monthly Notices of the Royal Astronomical Society
language:en
Short-container-title:

Author:

Roy Abhradeep¹^ORCID,Chitnis Varsha R¹,Gupta Alok C²^ORCID,Wiita Paul J³,Romero Gustavo E⁴⁵,Cellone Sergio A⁵⁶,Chatterjee Anshu¹^ORCID,Combi Jorge A⁴⁵⁷,Raiteri Claudia M⁸^ORCID,Sarkar Arkadipta¹^ORCID,Villata Massimo⁸

Affiliation:

1. Department of High Energy Physics, Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, India

2. Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, Nainital 263001, India

3. Department of Physics, The College of New Jersey, 2000 Pennington Road, Ewing, NJ 08628-0718, USA

4. Instituto Argentino de Radioastronomía (CCT-La Plata, CONICET; CICPBA; UNLP), Buenos Aires, Argentina

5. Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata, La Plata, Buenos Aires, Argentina

6. Complejo Astronómico El Leoncito (CASLEO, CONICET-UNLP-UNC-UNSJ), San Juan, Argentina

7. Deptamento de Ingeniería Mecánica y Minera, Universidad de Jaén, Campus Las Lagunillas s/n Ed. A3 Jaén, 23071, Spain

8. INAF – Osservatorio Astrofisico di Torino, Via Osservatorio 20, I-10025 Pino Torinese, Italy

Abstract

ABSTRACT We present a long term optical R band light-curve analysis of the gravitationally lensed blazar AO 0235+164 in the time span 1982–2019. Several methods of analysis lead to the result that there is a periodicity of ∼8.13 yr present in these data. In addition, each of these five major flares are apparently double-peaked, with the secondary peak following the primary one by ∼2 yr. Along with the well-known system, OJ 287, our finding constitutes one of the most secure cases of long-term quasi-periodic optical behaviour in a blazar ever found. A binary supermassive black hole system appears to provide a good explanation for these results.

Funder

Fermi Guest Investigator

INAF

Consejo Nacional de Investigaciones Científicas y Técnicas

National University of La Plata

Department of Atomic Energy, Government of India

CONICET

ANPCyT

Agencia Estatal de Investigación

Ministerio de Ciencia, Innovación y Universidades

Consejería de Economía, Innovación, Ciencia y Empleo, Junta de Andalucía

FEDER