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Pulsar Polarization Arrays

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arxiv 2111.10615 v2 pith:2T72VGIQ submitted 2021-11-20 astro-ph.HE astro-ph.COastro-ph.IMhep-ph

Tao Liu , Xuzixiang Lou , Jing Ren This is my paper · ORCID
classification astro-ph.HEastro-ph.COastro-ph.IMhep-ph
keywords ppasarraysptaspulsaraldmchern-simoncorrelationscoupling
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abstract

Pulsar timing arrays (PTAs) consisting of widely distributed and well-timed millisecond pulsars can serve as a galactic interferometer to measure gravitational waves. With the same data acquired for PTAs, we propose to develop pulsar polarization arrays (PPAs), to explore astrophysics and fundamental physics. As in the case of PTAs, PPAs are best suited to reveal temporal and spatial correlations at large scales that are hard to mimic by local noise. To demonstrate the physical potential of PPAs, we consider detection of ultralight axion-like dark matter (ALDM), through cosmic birefringence induced by its Chern-Simon coupling. Because of its tiny mass, the ultralight ALDM can be generated as a Bose-Einstein condensate, characterized by a strong wavy nature. Incorporating both temporal and spatial correlations of the signal, we show that PPAs have a potential to probe the Chern-Simon coupling up to $\sim 10^{-14}-10^{-17}$GeV$^{-1}$, with a mass range $\sim 10^{-27} - 10^{-21}$eV.

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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. Identifying Monochromatic Signals in LISA and Taiji via Spectral Split: Gravitational Waves versus Ultralight Dark Matter

    hep-ph 2025-08 conditional novelty 7.0 of 10

    Orbital motion of a space GW detector creates sideband patterns that differ between gravitational waves and ultralight dark matter, enabling discrimination by counting harmonics.

  2. Reflection polarization of close binaries as a probe of axion dark matter birefringence

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

    Phase-locked reflection polarization in close binaries can probe axion-photon coupling near 10^{-12} (single) to 10^{-13} GeV^{-1} (array) at ~10^{-20} eV via orbital-harmonic sidebands.

  3. The SKAO Pulsar Timing Array

    astro-ph.IM 2026-07 accept novelty 3.5 of 10

    An SKAO PTA with ~174 millisecond pulsars can dominate nanohertz GW sensitivity within four years and enable continuous-wave detections plus anisotropy maps of the gravitational-wave background.

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