The Unique Blazar OJ 287 and Its Massive Binary Black Hole Central Engine

  title={The Unique Blazar OJ 287 and Its Massive Binary Black Hole Central Engine},
  author={Lankeswar Dey and A. Gopakumar and Mauri Valtonen and Stanislaw Zola and Abhimanyu Susobhanan and Ren'e Hudec and Pauli Pihajoki and Tapio Pursimo and Andrei V. Berdyugin and Vilppu Piirola and Stefano Ciprini and Kari Nilsson and Helen E. Jermak and Mark Richard Kidger and Stefanie Komossa},
The bright blazar OJ 287 is the best-known candidate for hosting a nanohertz gravitational wave (GW) emitting supermassive binary black hole (SMBBH) in the present observable universe. The binary black hole (BBH) central engine model, proposed by Lehto and Valtonen in 1996, was influenced by the two distinct periodicities inferred from the optical light curve of OJ 287. The current improved model employs an accurate general relativistic description to track the trajectory of the secondary black… 

Figures and Tables from this paper

Promise of Persistent Multi-Messenger Astronomy with the Blazar OJ 287
Successful observations of the seven predicted bremsstrahlung flares from the unique bright blazar OJ 287 firmly point to the presence of a nanohertz gravitational wave (GW) emitting supermassive
X-ray spectral components of the blazar and binary black hole candidate OJ 287 (2005–2020)
We present a comprehensive analysis of all XMM-Newton spectra of OJ 287 spanning 15 years of X-ray spectroscopy of this bright blazar. We also report the latest results from our dedicated Swift UVOT
Spitzer Observations of the Predicted Eddington Flare from Blazar OJ 287
Binary black hole (BH) central engine description for the unique blazar OJ 287 predicted that the next secondary BH impact-induced bremsstrahlung flare should peak on 2019 July 31. This prediction
Accretion Disk Parameters Determined from the Great 2015 Flare of OJ 287
In the binary black hole model of OJ 287 the secondary black hole orbits a much more massive primary, and impacts on the primary accretion disk at predictable times. We update the parameters of the
A possible sub-kiloparsec dual AGN buried behind the galaxy curtain
Although thousands of galaxy mergers are known, only a handful of sub-kiloparsec-scale supermassive black hole (SMBH) pairs have been confirmed so far, leaving a huge gap between the observed and
The 2020 April–June super-outburst of OJ 287 and its long-term multiwavelength light curve with Swift: binary supermassive black hole and jet activity
We report detection of a very bright X-ray–UV–optical outburst of OJ 287 in 2020 April–June, the second brightest since the beginning of our Swift multiyear monitoring in late 2015. It is shown
A Quasar-based Supermassive Black Hole Binary Population Model: Implications for the Gravitational Wave Background
The nanohertz gravitational wave background (GWB) is believed to be dominated by GW emission from supermassive black hole binaries (SMBHBs). Observations of several dual-active galactic nuclei (AGN)
Discovery of a Close-separation Binary Quasar at the Heart of az∼ 0.2 Merging Galaxy and Its Implications for Low-frequency Gravitational Waves
Supermassive black hole (SMBH) binaries with masses of ~10^8--10^9 Msun are expected to dominate the contribution to the as-yet undetected gravitational wave background (GWB) signal at the nanohertz
Most massive double black hole 3C 454.3 and powerful gravitational wave radiation
Aims. A new method for determining the parameters of close double systems of supermassive black holes is proposed. Methods. We used the ground-based radio telescope in Simeiz (RT-22). Observational
Unusually powerful flare activity of the H2O maser feature near a velocity of −60 km s−1 in W49N
Water maser monitoring observations of W49N were carried out with the 22-m Simeiz radio telescope from 2017 May to 2020 February. A series of flares near a high-velocity spectral feature at −60 km


Authenticating the Presence of a Relativistic Massive Black Hole Binary in OJ 287 Using Its General Relativity Centenary Flare: Improved Orbital Parameters
Results from regular monitoring of relativistic compact binaries like PSR 1913+16 are consistent with the dominant (quadrupole) order emission of gravitational waves (GWs). We show that observations
Primary Black Hole Spin in OJ 287 as Determined by the General Relativity Centenary Flare
OJ 287 is a quasi-periodic quasar with roughly 12 year optical cycles. It displays prominent outbursts that are predictable in a binary black hole model. The model predicted a major optical outburst
Radio monitoring of OJ 287 and binary black hole models for periodic outbursts
The BL Lac-type active galaxy OJ 287 exhibits a 12 year periodicity with a double-peaked maxima in its optical flux variations. Several models sought to explain this periodicity, the first one firmly
OJ 287 - Binary pair of supermassive black holes
A historical light curve of the BL Lacertae object OJ 287 is constructed in the optical V band using observations between 1890 and the present. The curve exhibits periodic outbursts at intervals of
High accuracy measurement of gravitational wave back-reaction in the OJ287 black hole binary
Abstract Blazar OJ287 exhibits large thermal flares at least twice every 12 years. The times of these flares have been predicted successfully using the model of a quasi-Keplerian eccentric black hole
We have studied three most recent precursor flares in the light curve of the blazar OJ 287 while invoking the presence of a precessing binary black hole in the system to explain the nature of these
In 1995, a binary black hole model was proposed for the quasar OJ287, where the smaller secondary black hole impacts the accretion disk of the primary black hole twice during its 12 yr orbit and
Possibilities and Predictions of the OJ 287 Binary Black Hole Model
The quasar OJ 287 shows variability behavior in almost any scale, from tens of minutes to years. The most clear instances are double-peaked outbursts at about 12 yr intervals; these have been
A massive binary black-hole system in OJ 287 and a test of general relativity
The observations confirm the binary nature of the system and also provide evidence for the loss of orbital energy in agreement (within 10 per cent) with the emission of gravitational waves from the system.
Recurring flares from supermassive black hole binaries: implications for tidal disruption candidates and OJ 287
I discuss the possibility that accreting supermassive black hole (SMBH) binaries with sub-parsec separations produce periodically recurring luminous outbursts that interrupt periods of relative