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Multiwavelength astrophysics of the blazar OJ 287 and the project MOMO

Komossa, S, Kraus, A, Grupe, D, Parker, ML, Gonzalez, A, Gallo, LC, Gurwell, MA, Laine, S, Yao, S, Chandra, S, Dey, L, Gómez, JL, Hada, K, Haggard, D, Hollett, AR, Jermak, H, Jorstad, S, Krichbaum, TP, Markoff, S, McCall, C , Neilsen, J and Nowak, M (2023) Multiwavelength astrophysics of the blazar OJ 287 and the project MOMO. Astronomische Nachrichten. ISSN 0004-6337

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Open Access URL: https://doi.org/10.1002/asna.20220126 (Published version)


We are carrying out the densest and longest multiyear, multiwavelength monitoring project of OJ 287 ever done. The project MOMO (Multiwavelength Observations and Modeling of OJ 287) covers wavelengths from the radio to the high-energy regime. A few selected observations are simultaneous with those of the Event Horizon Telescope (EHT). MOMO aims at understanding disk-jet physics and at testing predictions of the binary black hole scenario of OJ 287. Here, we present a discussion of extreme outburst and minima states in context, and then focus on the recent flux and spectral evolution between 2021 and May 2022, including an ongoing bright radio flare. Further, we show that there is no evidence for precursor flare activity in our optical–UV–X-ray light curves that would be associated with any secondary supermassive black hole (SMBH) disk impact and that was predicted to start as thermal flare on December 23, 2021.

Item Type: Article
Uncontrolled Keywords: 0201 Astronomical and Space Sciences; Astronomy & Astrophysics
Subjects: Q Science > QB Astronomy
Q Science > QC Physics
Divisions: Astrophysics Research Institute
Publisher: Wiley
SWORD Depositor: A Symplectic
Date Deposited: 16 Mar 2023 15:21
Last Modified: 16 Mar 2023 15:30
DOI or ID number: 10.1002/asna.20220126
URI: https://researchonline.ljmu.ac.uk/id/eprint/19125
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