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Astrophysics > High Energy Astrophysical Phenomena

arXiv:2111.10615 (astro-ph)
[Submitted on 20 Nov 2021 (v1), last revised 27 Mar 2023 (this version, v2)]

Title:Pulsar Polarization Arrays

Authors:Tao Liu, Xuzixiang Lou, Jing Ren
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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.
Comments: 11 pages, 4 figures; v2: matches version published in Physical Review Letters, pulsar number for the optimal PPA changed, Fig.2 updated, Supplementary Materials added
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE); Cosmology and Nongalactic Astrophysics (astro-ph.CO); Instrumentation and Methods for Astrophysics (astro-ph.IM); High Energy Physics - Phenomenology (hep-ph)
Cite as: arXiv:2111.10615 [astro-ph.HE]
  (or arXiv:2111.10615v2 [astro-ph.HE] for this version)
  https://doi.org/10.48550/arXiv.2111.10615
Related DOI: https://doi.org/10.1103/PhysRevLett.130.121401

Submission history

From: Jing Ren [view email]
[v1] Sat, 20 Nov 2021 15:43:38 UTC (609 KB)
[v2] Mon, 27 Mar 2023 09:33:07 UTC (927 KB)
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