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Constraints on non-resonant photon-axion conversion from the Planck satellite data
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abstract
The non-resonant conversion of Cosmic Microwave Background (CMB) photons into scalar as well as light pseudoscalar particles such as axion-like particles (ALPs) in the presence of turbulent magnetic fields can cause a unique, spatially fluctuating spectral distortion in the CMB. We use the publicly available Planck temperature maps for the frequency channels (70-545 GHz) to obtain the first ALP distortion map using $45\%$ clean part of the sky. The $95^{th}$ percentile upper limit on the RMS fluctuation of ALP distortions from the cleanest part of the CMB sky at $15$ arcmin angular resolution is $18.5 \times 10^{-6}$. The RMS fluctuation in the distortion map is also consistent with different combinations of frequency channels and sky-fractions.
Forward citations
Cited by 3 Pith papers
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Implications for dark energy of cosmic transparency in light of DESI data
No deviation found from the distance duality relation in combined DESI, CMB, and supernova data, ruling out dimming as an explanation of the Hubble tension.
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A new probe of Axion-Like Particles: CMB polarization distortions due to cluster magnetic fields
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.
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New Horizons in Cosmology with Spectral Distortions of the Cosmic Microwave Background
A white paper advocating for a CMB spectral distortion mission to detect predicted mu, y, and recombination signals and probe inflation, dark matter, and particle physics.
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