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Polarization Signals from Axion-Photon Resonant Conversion in Neutron Star Magnetosphere

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arxiv 2402.15144 v2 pith:3K6HD6QX submitted 2024-02-23 hep-ph

Ningqiang Song , Liangliang Su , Lei Wu This is my paper
classification hep-ph
keywords polarizationneutronconversionstaraxion-photonlesssimmagnetosphereresonant
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abstract

Neutron stars provide ideal astrophysical laboratories for probing new physics beyond the Standard Model. If axions exist, photons can develop linear polarization during photon-axion conversion in the magnetic field of a neutron star. We find that the plasma in the neutron star magnetosphere could dramatically enhance the polarization through the resonant conversion effect. With the polarization measurements from PSR B0656+14, 4U 0142+61, and the benchmark polarization measurement in the mid-infrared band, we demonstrate that optical and infrared polarization from neutron stars can provide strong constraints on the axion-photon coupling over a broad axion mass range $10^{-11}\lesssim m_a \lesssim 10^{-3}$ eV.

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Cited by 3 Pith papers

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

  1. Constraints on Axion-Like Particles with the Silicon Detector at a Nuclear Reactor

    hep-ph 2026-01 conditional novelty 6.0 of 10

    New 90% C.L. limits on the ALP–photon coupling in the 0.1–100 keV range are derived from Connie and Atucha-II reactor data via plasmon excitation in silicon; a 30 kg·yr Oscura-style run could improve on NEON by about tenfold.

  2. Can Orbital Decay of Accreting Binary Pulsars Probe Dark Matter?

    hep-ph 2025-07 conditional novelty 5.0 of 10

    Dark matter accretion onto binary pulsars is far too weak to affect observed orbital decay, so existing pulsar timing data cannot probe dark matter microphysics.

  3. Circular polarization effects induced by photon-axion mixing in astrophysical environments

    astro-ph.HE 2026-06 unverdicted novelty 4.0 of 10

    The paper derives analytic circular-polarization signals from photon-axion mixing and uses the blazar S4 0954+65 optical circular-polarization limit to bound g_aγγ around 10^-12 to 10^-11 GeV^-1 for ultralight axion masses.

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