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Electromagnetic Counterparts to Massive Black Hole Mergers

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arxiv 2109.03262 v2 pith:BNXOP5YO submitted 2021-09-07 astro-ph.HE gr-qc

Tamara Bogdanovic (1) , M. Coleman Miller (2) , Laura Blecha (3) ((1) Georgia Institute of Technology , (2) University of Maryland , (3) University of Florida) This is my paper · ORCID
classification astro-ph.HEgr-qc
keywords counterpartswillbinariesblackcoalescencedetectionsdiscusselectromagnetic
verification ladder T0 review T1 audit T2 compute T3 formal
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The next two decades are expected to open the door to the first coincident detections of electromagnetic (EM) and gravitational wave (GW) signatures associated with massive black hole (MBH) binaries heading for coalescence. These detections will launch a new era of multimessenger astrophysics by expanding this growing field to the low-frequency GW regime and will provide an unprecedented understanding of the evolution of MBHs and galaxies. They will also constitute fundamentally new probes of cosmology and would enable unique tests of gravity. The aim of this Living Review is to provide an introduction to this research topic by presenting a summary of key findings, physical processes and ideas pertaining to EM counterparts to MBH mergers as they are known at the time of this writing. We review current observational evidence for close MBH binaries, discuss relevant physical processes and timescales, and summarize the possible EM counterparts to GWs in the precursor, coalescence, and afterglow stages of a MBH merger. We also describe open questions and discuss future prospects in this dynamic and quick-paced research area.

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Cited by 6 Pith papers

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  2. Coincident Multimessenger Bursts from Eccentric Supermassive Binary Black Holes

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    For an eccentric supermassive black hole binary, a full general-relativistic simulation shows the jet's light and the gravitational-wave bursts pulse together at the orbital period.

  3. Cosmic Pairs: A DESI Census of Dual and Offset AGN as Precursors to Massive Black Hole Binaries

    astro-ph.GA 2026-07 conditional novelty 6.0 of 10

    DESI DR1 spectroscopy yields >7,000 candidate dual-AGN pairs, expanding the known kpc-scale census by ~4x and linking host-galaxy demographics to LISA-detectable massive black hole mergers.

  4. nmma: An extended Bayesian framework for Nuclear Multimessenger Astronomy in the Era of Next-Generation Detectors

    astro-ph.IM 2026-07 accept novelty 6.0 of 10

    nmma now jointly samples nuclear EoS parameters with GW and EM data via TOV emulators and Fiesta surrogates, delivering 20–60× speedups and future H0–nuclear constraints.

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    A GP with a flexible periodic kernel recovers non-sinusoidal periodicities in simulated AGN light curves better than cosine-kernel GPs, and better than Lomb-Scargle periodograms for ideal and LSST-like sampling, but n...

  6. Can quasars, triggered by mergers, account for NANOGrav's stochastic gravitational wave background?

    astro-ph.CO 2024-12 conditional novelty 4.0 of 10

    Using the observed quasar luminosity function, the authors show that quasar-associated black hole mergers can reproduce the NANOGrav gravitational wave background if quasar lifetimes are near 3e7 years and most quasar...

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