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Constraints on the missing baryons from the kinetic Sunyaev-Zeldovich effect in Planck data by Hernández-Monteagudo, Carlos; Ma, Yin-zhe; Kitaura, Francisco-Shu; Wang, Wenting; Génova-Santos, Ricardo; Macías-Pérez, Juan; Herranz, Diego is a scholarly article available to read on EtoBox.

What is Constraints on the missing baryons from the kinetic Sunyaev-Zeldovich effect in Planck data about?

We estimate the amount of the {\it missing baryons} detected by the \Planck\ measurements of the cosmic microwave background in the direction of Central Galaxies (CGs) identified in the Sloan galaxy survey. The peculiar motion of the gas inside and around the CGs unveils values of the Thomson optical depth $\tau_{\rm T}$ in the range $0.2$--$2\times 10^{-4}$, indicating that the regions probed around CGs contain roughly half of the total amount of baryons in the Universe at the epoch where the CGs are found. If baryons follow dark matter, the measured $\tau_{\rm T}$s are compatible with the detection all the baryons existing inside and around the CGs.

Author

Hernández-Monteagudo, Carlos; Ma, Yin-zhe; Kitaura, Francisco-Shu; Wang, Wenting; Génova-Santos, Ricardo; Macías-Pérez, Juan; Herranz, Diego

Published

2015

Language

EN