Cosmologically Probing Ultra-light Particle Dark Matter using 21cm Signals

Mao, Yi; Kadota, Kenji; Silk, Joseph; Ichiki, Kiyomoto

Contribution to a conference proceedings/Contribution to a book

PUBDB-2016-05930

Cosmologically Probing Ultra-light Particle Dark Matter using 21cm Signals

Mao, Y. ; Kadota, K. ; Ichiki, K. ; Silk, J.

2014
Verlag Deutsches Elektronen-Synchrotron Hamburg
ISBN: 978-3-935702-59-1

Mao, Yi "Cosmologically Probing Ultra-light Particle Dark Matter using 21cm Signals" in Proceedings, 10th Patras Workshop on Axions, WIMPs and WISPs (AXION-WIMP 2014) / Tsesmelis, Emmanuel, Maroudas, Marios (eds.), Verlag Deutsches Elektronen-Synchrotron : 2014 ; AXION-WIMP 2014 : 10th Patras Workshop on Axions, WIMPs and WISPs, 2014-06-29 - 2014-07-04, Geneva
10th Patras Workshop on Axions, WIMPs and WISPs, AXION-WIMP 2014, Geneva, Switzerland, 29 Jun 2014 - 4 Jul 2014 Hamburg : Verlag Deutsches Elektronen-Synchrotron, DESY-PROC 151-155 (2014) [10.3204/DESY-PROC-2014-03/mao_yi]

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Please use a persistent id in citations: doi:10.3204/DESY-PROC-2014-03/mao_yi

Abstract: Ubiquitous ultra-light scalar fields may make a partial contribution to the dark matter and affect the large scale structure of the Universe. While their properties are heavily model dependent, we develop a model-independent analysis to forecast the constraints on their mass and abundance using futuristic 21~cm observation as well as CMB lensing measurements. We demonstrate that the 21~cm power spectrum are most sensitive to the ultra-light dark matter with mass $m\sim 10^{-26}$~eV for which the precision attainable on mass and abundance bounds can be of the order of a few percent.

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