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arxiv 2008.03305 v2 pith:PBF2LOWB submitted 2020-08-07 hep-ph astro-ph.HEastro-ph.SR

X-ray Searches for Axions from Super Star Clusters

classification hep-ph astro-ph.HEastro-ph.SR
keywords axionsclustersstarsaxion-photoncouplingevidencegalacticgamma
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Axions may be produced in abundance inside stellar cores and then convert into observable X-rays in the Galactic magnetic fields. We focus on the Quintuplet and Westerlund 1 super star clusters, which host large numbers of hot, young stars including Wolf-Rayet stars; these stars produce axions efficiently through the axion-photon coupling. We use Galactic magnetic field models to calculate the expected X-ray flux locally from axions emitted from these clusters. We then combine the axion model predictions with archival Nuclear Spectroscopic Telescope Array (NuSTAR) data from 10 - 80 keV to search for evidence of axions. We find no significant evidence for axions and constrain the axion-photon coupling $g_{a\gamma\gamma} \lesssim 3.6 \times 10^{-12}$ GeV$^{-1}$ for masses $m_a \lesssim 5 \times 10^{-11}$ eV at 95\% confidence.

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Cited by 6 Pith papers

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

  1. Lights, Camera, Axion: Tracing Axions from Supernovae in the Diffuse $\gamma$-ray Sky

    hep-ph 2026-04 unverdicted novelty 7.0

    Axions produced in supernovae generate a diffuse gamma-ray signal through conversion in magnetic fields, yielding competitive constraints on the axion-photon coupling from COMPTEL, EGRET, and Fermi-LAT data plus forec...

  2. Ultralight dark matter detection with trapped-ion interferometry

    hep-ph 2025-07 conditional novelty 7.0

    A trapped ion in a spin-motion entangled state can detect kinetically mixed dark photon dark matter in the 10^{-15} to 10^{-14} eV mass range through Aharonov-Bohm phase shifts with parametrically enhanced sensitivity.

  3. Bounds on massive graviton-like particles from searches for axion-like particles coupling to photons

    hep-ph 2026-05 unverdicted novelty 6.0

    Limits on axion-like particles from photon-coupling searches are recast as constraints on massive graviton-like particles across lab, astrophysical, and cosmological experiments using analogous Primakoff and Gertsensh...

  4. Neutron Star Eclipses as Axion Laboratories

    hep-ph 2025-04 unverdicted novelty 6.0

    Using eclipse attenuation in the LMC X-4 neutron star binary, the authors set g_aγ ≤ 1.44 × 10^{-10} GeV^{-1} at 90% CL, surpassing current light-shining-through-walls bounds.

  5. Reappraisal of the Constraints on Heavy Axion-like Particles from Gamma-Ray Bursts

    hep-ph 2026-07 conditional novelty 5.0

    Realistic GRB parameters weaken previous ALP cooling bounds, but ALP-induced secondary fireballs in GRBs could still be probed via isotropic X-ray emission from future telescopes.

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

    astro-ph.HE 2026-06 unverdicted novelty 4.0

    Photon-axion mixing in magnetic fields induces circular polarization that constrains the axion-photon coupling to g_aγγ ≤ 5×10^{-12} GeV^{-1} for m_a ~10^{-16}--10^{-10} eV using blazar data, with peak sensitivity in ...