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Evidence of the missing baryons from the kinematic Sunyaev-Zeldovich effect in Planck data

AuthorsHernández-Monteagudo, C.; Macías-Pérez, J. F.; Herranz, D. CSIC ORCID
Issue Date2015
PublisherAmerican Physical Society
CitationPhysical Review Letters 115(19): 191301 (2015)
AbstractWe estimate the amount of the 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 τT in the range 0.2-2×10-4, 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 τT's are compatible with the detection of all of the baryons existing inside and around the CGs.
DescriptionUnder the terms of the Creative Commons Attribution license.-- et al.
Publisher version (URL)https://doi.org/10.1103/PhysRevLett.115.191301
Identifiersdoi: 10.1103/PhysRevLett.115.191301
e-issn: 1079-7114
issn: 0031-9007
Appears in Collections:(IFCA) Artículos
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