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Constraints on Axion-Like Particles from X-ray Observations of NGC1275

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arxiv 1605.01043 v3 pith:5ETVTB6N submitted 2016-05-03 astro-ph.HE hep-ph

Marcus Berg , Joseph P. Conlon , Francesca Day , Nicholas Jennings , Sven Krippendorf , Andrew J. Powell , Markus Rummel This is my paper · ORCID
classification astro-ph.HEhep-ph
keywords axion-likeclusterconstraintsdatasetgammairregularitieslesssimmagnetic
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abstract

Axion-like particles (ALPs) can induce localised oscillatory modulations in the spectra of photon sources passing through astrophysical magnetic fields. Ultra-deep Chandra observations of the Perseus cluster contain over $5 \times 10^5$ counts from the AGN of the central cluster galaxy NGC1275, and represent a dataset of extraordinary quality for ALP searches. We use this dataset to search for X-ray spectral irregularities from the AGN. The absence of irregularities at the O(30%) level allows us to place leading constraints on the ALP-photon mixing parameter $g_{a\gamma\gamma} \lesssim 1.4 - 4.0 \times 10^{-12} {\rm GeV}^{-1}$ for $m_a \lesssim 10^{-12}$ eV, depending on assumptions on the magnetic field realisation along the line of sight.

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Forward citations

Cited by 5 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. OpenAlex reports about 76 citations worldwide. Full citation record

  1. A new probe of Axion-Like Particles: CMB polarization distortions due to cluster magnetic fields

    astro-ph.CO 2019-08 conditional novelty 5.0 of 10

    Resonant photon-to-axion conversion in galaxy cluster magnetic fields creates a polarized CMB distortion that future experiments could use to constrain ALP couplings two orders of magnitude better than current bounds.

  2. On the impact of magnetic-field models in galaxy clusters on constraints on axion-like particles from the lack of irregularities in high-energy spectra of astrophysical sources

    astro-ph.HE 2019-08 conditional novelty 5.0 of 10

    For a purely regular magnetic field in the X-ray cavity of NGC 1275, the ALP-photon coupling constraints from Fermi-LAT spectral smoothness are much weaker than for the purely turbulent field assumed in previous work,...

  3. Unraveling the Imprints of Fluctuation-dynamo on the Intracluster Medium with the SKA

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

    MHD simulations indicate that SKA-Mid Band 5a can detect filamentary polarized emission from ICM magnetic fields at high resolution and sensitivity, allowing inference of turbulence driving scales.

  4. Probing the Fundamental Nature of Particle Dark Matter

    astro-ph.CO 2026-06 unverdicted novelty 2.0 of 10

    Review summarizing radio searches for WIMP and ALP dark matter with SKA precursors and forecasts for SKA-Low and SKA-Mid telescopes.

  5. Lecture Notes: WISPs in gamma-ray astrophysics

    astro-ph.HE 2025-05 unverdicted novelty 1.0 of 10

    The paper is a pedagogical review of axion-like particle searches in gamma-ray astrophysics, with tutorial derivations and a notebook-based analysis of NGC 1275, and it contains no new research result.

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