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The second data release from the European Pulsar Timing Array: VI. Challenging the ultralight dark matter paradigm

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arxiv 2306.16228 v2 pith:IXWFLB5H submitted 2023-06-28 astro-ph.HE astro-ph.COastro-ph.GAgr-qchep-ph

classification astro-ph.HEastro-ph.COastro-ph.GAgr-qchep-ph
keywords matterdarktimingarraylesssimpulsarultralightdata
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

Pulsar Timing Array experiments probe the presence of possible scalar or pseudoscalar ultralight dark matter particles through decade-long timing of an ensemble of galactic millisecond radio pulsars. With the second data release of the European Pulsar Timing Array, we focus on the most robust scenario, in which dark matter interacts only gravitationally with ordinary baryonic matter. Our results show that ultralight particles with masses $10^{-24.0}~\text{eV} \lesssim m \lesssim 10^{-23.3}~\text{eV}$ cannot constitute $100\%$ of the measured local dark matter density, but can have at most local density $\rho\lesssim 0.3$ GeV/cm$^3$.

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Forward citations

Cited by 3 Pith papers

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

  1. Correlated signals of ultralight scalar dark matter in pulsar timing

    astro-ph.CO 2026-07 conditional novelty 7.0 of 10

    A finite-spatial-correlation Gaussian-field prior for PTA ULDM signals interpolates between fully correlated and uncorrelated limits and is validated on blinded mock data for linear and quadratic couplings.

  2. Pulsar Timing Sensitivity to Dark Matter Substructure in the Presence of a Stochastic Gravitational-Wave Background

    astro-ph.CO 2026-07 accept novelty 6.5 of 10

    A stochastic GWB suppresses PTA reach to DM substructure by 1–3 orders of magnitude relative to white-noise forecasts, with dynamic Shapiro least affected near 10^{-2} M_⊙.

  3. Constraints on minimally and conformally coupled ultralight dark matter with the EPTA

    astro-ph.HE 2025-02 conditional

    The EPTA data rule out ultralight dark matter beyond a few tenths of the local density and place orders-of-magnitude stronger limits on scalar couplings to matter.

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