Computes anisotropic CMB spectral distortion power spectra from photon-dark photon conversions, finding that mass controls multipole shape and mixing sets amplitude, then places Planck limits on the minimal model.
Improved frequency hierarchy treatment for anisotropic spectral distortions.arXiv e-prints, page arXiv:2602.14963, February 2026
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Spectral distortion anisotropies from photon to dark photon conversions
Computes anisotropic CMB spectral distortion power spectra from photon-dark photon conversions, finding that mass controls multipole shape and mixing sets amplitude, then places Planck limits on the minimal model.