2019
DOI: 10.1088/1475-7516/2019/06/031
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Constraints on non-resonant photon-axion conversion from the Planck satellite data

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 distor… Show more

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Cited by 16 publications
(9 citation statements)
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“…Our results are not directly applicable, but could, however, be extended using the appropriate source term. We noted that resonant photon conversion mediated by magnetic fields inside our galaxy and galaxy clusters can lead to anisotropic spectral distortions (both polarized and unpolarized, e.g., Mukherjee et al 2019Mukherjee et al , 2020, providing exciting targets for future CMB imagers (Delabrouille et al 2019;Chluba et al 2019a). All these examples highlight the immense potential of future spectral distortion measurements as a probe of particle physics.…”
Section: Axion-like-particlesmentioning
confidence: 80%
“…Our results are not directly applicable, but could, however, be extended using the appropriate source term. We noted that resonant photon conversion mediated by magnetic fields inside our galaxy and galaxy clusters can lead to anisotropic spectral distortions (both polarized and unpolarized, e.g., Mukherjee et al 2019Mukherjee et al , 2020, providing exciting targets for future CMB imagers (Delabrouille et al 2019;Chluba et al 2019a). All these examples highlight the immense potential of future spectral distortion measurements as a probe of particle physics.…”
Section: Axion-like-particlesmentioning
confidence: 80%
“…This avenue will provide stringent constraints on the coupling strength g γ γ a for all the masses of ALPs below 10 −11 eV. The first constraint of this kind of distortion is obtained from the data of the Planck satellite [256].…”
Section: Axion-like Particlesmentioning
confidence: 99%
“…Adding information from secondary CMB anisotropies in the kinetic Sunyaev-Zeldovich effect could further increase sensitivity and also probe up to m φ ∼ 10 −22 eV [141,178,179]. Electromagnetic UDM couplings will also yield CMB spectral distortion signatures [180][181][182][183][184].…”
Section: Cosmological and Astrophysical Probesmentioning
confidence: 99%