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Efficient large-scale, targeted gravitational-wave probes of supermassive black-hole binaries

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arxiv 2304.03786 v1 pith:QQ6RYC6A submitted 2023-04-07 gr-qc astro-ph.GAastro-ph.HE

classification gr-qcastro-ph.GAastro-ph.HE
keywords binariesefficientapproximationlarge-scalepulsarsearchessourcessupermassive
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

Supermassive black hole binaries are promising sources of low-frequency gravitational waves (GWs) and bright electromagnetic emission. Pulsar timing array searches for resolved binaries are complex and computationally expensive and so far limited to only a few sources. We present an efficient approximation that empowers large-scale targeted multi-messenger searches by neglecting GW signal components from the pulsar term. This Earth-term approximation provides similar constraints on the total mass and GW frequency of the binary, yet is $>100$ times more efficient.

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Forward citations

Cited by 5 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Summary statistic for pulsar timing arrays

    astro-ph.CO 2026-08 conditional novelty 7.0 of 10

    A PTA likelihood expressed in terms of low-order spherical harmonics of the Earth term and pulsar-term variance retains roughly 95% of the information about a stochastic background, and ell_max=3 plus the pulsar-term ...

  2. QuickGWecc: Fast Bayesian pipeline for searching eccentric binaries in pulsar timing array data

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

    QuickGWecc extends the fast QuickCW framework to relativistic eccentric binaries, with projection-parameter likelihood updates taking about 41 microseconds.

  3. Testing General Relativity with Individual Supermassive Black Hole Binaries

    gr-qc 2026-05 unverdicted novelty 6.0 of 10

    Beyond-GR polarization modes in a single supermassive black hole binary show up linearly (not quadratically) in pulsar-timing cross-correlations, massive-graviton dispersion shifts antenna patterns and pulsar-term pha...

  4. Fingerprints of Individual Supermassive Black Hole Binaries in Pulsar Timing Arrays

    astro-ph.HE 2026-03 conditional novelty 6.0 of 10

    A single supermassive black hole binary imprints a deterministic, direction-dependent correlation fingerprint on pulsar timing arrays, enabling identification via cross-correlations.

  5. Two-Dimensional Pulsar Distance Inference from Nanohertz Gravitational Waves

    gr-qc 2025-12 conditional novelty 6.0 of 10

    A two-dimensional joint-posterior analysis of multiple nanohertz gravitational-wave sources can infer pulsar distances below the parsec level in simulated SKA-era pulsar timing arrays.

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