Project MOMO: Multiwavelength Observations and Modeling of OJ 287

Universe

A. R. Hollett¹  A. G. Gonzalez¹  L. C. Gallo¹  D. Grupe²  M. J. Valtonen³  M. L. Parker⁴  J. L. Gómez⁵  S. Ciprini⁶  S. Komossa⁷  A. Kraus⁷  U. Bach⁷  I. Myserlis⁷ 

[1] Department of Astronomy and Physics, Saint Mary’s University, 923 Robie Street, Halifax, NS B3H 3C3, Canada;Department of Physics, Earth Science, and Space System Engineering, Morehead State University, 235 Martindale Dr, Morehead, KY 40351, USA;Finnish Centre for Astronomy with ESO, University of Turku, FI-20014 Turku, Finland;Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK;Instituto de Astrofísica de Andalucía-CSIC, Glorieta de la Astronomía s/n, 18008 Granada, Spain;Istituto Nazionale di Fisica Nucleare (INFN) Sezione di Roma Tor Vergata, Via della Ricerca Scientifica 1, 00133 Roma, Italy;Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany;

关键词: active galactic nuclei;    blazars;    jets;    black holes;    supermassive binary black holes;    OJ 287;   

DOI  :  10.3390/universe7080261

来源: DOAJ

【 摘 要 】

Our project MOMO (Multiwavelength observations and modeling of OJ 287) consists of dedicated, dense, long-term flux and spectroscopic monitoring, and deep follow-up observations of the blazar OJ 287 at >13 frequencies from the radio to the X-ray band since late 2015. In particular, we are using Swift to obtain optical-UV-X-ray spectral energy distributions (SEDs) and the Effelsberg telescope to obtain radio measurements between 2 and 40 GHz. MOMO is the densest long-term monitoring of OJ 287 involving X-rays and broad-band SEDs. The theoretical part of the project aims at understanding jet and accretion physics of the blazar central engine in general and the supermassive binary black hole scenario in particular. Results are presented in a sequence of publications and so far included: detection and detailed analysis of the bright 2016/17 and 2020 outbursts and the long-term light curve; Swift, XMM, and NuSTAR spectroscopy of the 2020 outburst around maximum; and interpretation of selected events in the context of the binary black hole scenario of OJ 287 (papers I–IV). Here, we provide a description of the project MOMO, a summary of previous results, the latest results, and we discuss future prospects.

【 授权许可】

Unknown