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Constraining resonant photon-axion conversions in the Early Universe

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arxiv 0905.4865 v2 pith:MPSGJBKL submitted 2009-05-29 hep-ph astro-ph.CO

Alessandro Mirizzi (Max Planck Inst. , Munich) , Javier Redondo (Deutsches Elektronen Synchrotron , Hamburg) , Guenter Sigl (Hamburg University) This is my paper · ORCID
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keywords conversionsresonantbackgroundcosmicfieldmagneticphoton-alpuniverse
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The presence of a primordial magnetic field would have induced resonant conversions between photons and axion-like particles (ALPs) during the thermal history of the Universe. These conversions would have distorted the blackbody spectrum of the cosmic microwave background (CMB). In this context, we derive bounds on the photon-ALP resonant conversions using the high precision CMB spectral data collected by the FIRAS instrument on board of the Cosmic Background Explorer. We obtain upper limits on the product of the photon-ALP coupling constant g times the magnetic field strength B down to g B > 10^{-13} GeV^{-1} nG for ALP masses below the eV scale.

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Cited by 4 Pith papers

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

  1. Probing Axion-Photon conversion via circular polarization imprints in the CMB $V$-mode observations

    astro-ph.CO 2025-10 unverdicted novelty 6.0 of 10

    Proposes that axion-photon conversion in pre-CMB helical magnetic fields imprints detectable V-mode polarization in the CMB, allowing CLASS 40 GHz observations to constrain ALP masses 10^{-10} to 10^{-8} eV and their ...

  2. Resonant Landau-Zener Conversion In Multi-Axion Systems

    hep-ph 2025-07 conditional novelty 6.0 of 10

    The paper derives a Landau-Zener conversion probability for non-adiabatic axion mass-level crossings and uses it to predict two-axion dark matter abundances and haloscope targets.

  3. Dimming of Photon Ring due to Photon-Axion Conversion around Kerr Black Holes

    gr-qc 2026-05 unverdicted novelty 5.0 of 10

    Photon-axion conversion near Kerr black holes produces dimming of photon spectral luminosity that increases with black hole spin, magnetic field strength, and photon-axion coupling, most efficiently at high frequencies.

  4. Axion-Photon Conversion in FLRW with Primordial Magnetic Fields: Explaining the Radio Excess

    astro-ph.CO 2025-09 conditional novelty 4.0 of 10

    Resonant conversion of axion-like particles into photons in nanogauss primordial magnetic fields is claimed to explain both the ARCADE2 radio excess and the EDGES 21-cm trough for axion masses near 10^-14 to 10^-12 eV.

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