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Abstract: We 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 tT 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 tT’s are compatible with the detection of all of the baryons existing inside and around the CGs
Fuente: Phys. Rev. Lett. Vol. 115, Num. 19, Pag. 191301 (2015)
Editorial: American Physical Society
Fecha de publicación: 01/11/2015
Nº de páginas: 5
Tipo de publicación: Artículo de Revista
DOI: 10.1103/PhysRevLett.115.191301
ISSN: 0031-9007,1079-7114
Url de la publicación: https://doi.org/10.1103/PhysRevLett.115.191301
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HERNÁNDEZ-MONTEAGUDO, CARLOS
MA, YIN-ZE
KITAURA, FRANCISCO S.
WANG, WENTING
GÉNOVA-SANTOS, RICARDO
MACÍAS-PÉREZ, JUAN
DIEGO HERRANZ MUÑOZ
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