Constraints on μ-distortion fluctuations and primordial non-Gaussianity from Planck data

@article{Khatri2015ConstraintsO,
title={Constraints on $\mu$-distortion fluctuations and primordial non-Gaussianity from Planck data},
author={Rishi Khatri and Rashid Sunyaev},
journal={Journal of Cosmology and Astroparticle Physics},
year={2015},
volume={2015},
pages={026 - 026}
}
• Published 20 July 2015
• Physics
• Journal of Cosmology and Astroparticle Physics
We use the Planck HFI channel maps to make an all sky map of μ-distortion fluctuations. Our μ-type distortion map is dominated by the y-type distortion contamination from the hot gas in the low redshift Universe and we can thus only place upper limits on the μ-type distortion fluctuations. For the amplitude of μ-type distortions on 10′ scales we get the limit on root mean square (rms) value μrms10′< 6.4× 10−6, a limit 14 times stronger than the COBE-FIRAS (95% confidence) limit on the mean of…

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