Neutrino and dark radiation properties in light of recent CMB observations
Recent cosmic microwave background measurements at high multipoles from the South Pole Telescope and from the Atacama Cosmology Telescope seem to disagree in their conclusions for the neutrino and dark radiation properties. In this paper we set new bounds on the dark radiation and neutrino propertie...
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ftcsic:oai:digital.csic.es:10261/126239 2024-02-11T10:08:41+01:00 Neutrino and dark radiation properties in light of recent CMB observations Giusarma, Elena Archidiacono, María Melchiorri, Alessandro Mena, Olga Ministerio de Ciencia e Innovación (España) European Institute of Innovation and Technology 2013-05-20 http://hdl.handle.net/10261/126239 https://doi.org/10.1103/PhysRevD.87.103519 https://doi.org/10.13039/501100004837 https://doi.org/10.13039/501100000811 en eng American Physical Society Preprint http://dx.doi.org/10.1103/PhysRevD.87.103519 Sí Physical Review - Section D - Particles and Fields 87 (10): 103519 - 10 (2013) 1550-7998 http://hdl.handle.net/10261/126239 doi:10.1103/PhysRevD.87.103519 1550-2368 http://dx.doi.org/10.13039/501100004837 http://dx.doi.org/10.13039/501100000811 open Baryuon Acosutic-Oscillations Hubble Constant artículo http://purl.org/coar/resource_type/c_6501 2013 ftcsic https://doi.org/10.1103/PhysRevD.87.10351910.13039/50110000483710.13039/501100000811 2024-01-16T10:12:25Z Recent cosmic microwave background measurements at high multipoles from the South Pole Telescope and from the Atacama Cosmology Telescope seem to disagree in their conclusions for the neutrino and dark radiation properties. In this paper we set new bounds on the dark radiation and neutrino properties in different cosmological scenarios combining the ACT and SPT data with the nine-year data release of the Wilkinson Microwave Anisotropy Probe (WMAP-9), baryon acoustic oscillation data, Hubble Telescope measurements of the Hubble constant, and supernovae Ia luminosity distance data. In the standard three massive neutrino case, the two high multipole probes give similar results if baryon acoustic oscillation data are removed from the analyses and Hubble Telescope measurements are also exploited. A similar result is obtained within a standard cosmology with N-eff massless neutrinos, although in this case the agreement between these two measurements is also improved when considering simultaneously baryon acoustic oscillation data and Hubble Space Telescope measurements. In the N-eff massive neutrino case the two high multipole probes give very different results regardless of the external data sets used in the combined analyses. When considering extended cosmological scenarios with a dark energy equation of state or with a running of the scalar spectral index, the evidence for neutrino masses found for the South Pole Telescope in the three neutrino scenario disappears for all the data combinations explored here. Again, adding Hubble Telescope data seems to improve the agreement between the two high multipole cosmic microwave background measurements considered here. In the case in which a dark radiation background with unknown clustering properties is also considered, SPT data seem to exclude the standard value for the dark radiation viscosity c(vis)(2) = 1/3 at the 2 sigma C.L., finding evidence for massive neutrinos only when combining SPT data with baryon acoustic oscillation measurements. The authors would like to ... Article in Journal/Newspaper South pole Digital.CSIC (Spanish National Research Council) Hubble ENVELOPE(158.317,158.317,-80.867,-80.867) South Pole Wilkinson ENVELOPE(-66.200,-66.200,-66.817,-66.817) Physical Review D 87 10 |
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Digital.CSIC (Spanish National Research Council) |
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language |
English |
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Baryuon Acosutic-Oscillations Hubble Constant |
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Baryuon Acosutic-Oscillations Hubble Constant Giusarma, Elena Archidiacono, María Melchiorri, Alessandro Mena, Olga Neutrino and dark radiation properties in light of recent CMB observations |
topic_facet |
Baryuon Acosutic-Oscillations Hubble Constant |
description |
Recent cosmic microwave background measurements at high multipoles from the South Pole Telescope and from the Atacama Cosmology Telescope seem to disagree in their conclusions for the neutrino and dark radiation properties. In this paper we set new bounds on the dark radiation and neutrino properties in different cosmological scenarios combining the ACT and SPT data with the nine-year data release of the Wilkinson Microwave Anisotropy Probe (WMAP-9), baryon acoustic oscillation data, Hubble Telescope measurements of the Hubble constant, and supernovae Ia luminosity distance data. In the standard three massive neutrino case, the two high multipole probes give similar results if baryon acoustic oscillation data are removed from the analyses and Hubble Telescope measurements are also exploited. A similar result is obtained within a standard cosmology with N-eff massless neutrinos, although in this case the agreement between these two measurements is also improved when considering simultaneously baryon acoustic oscillation data and Hubble Space Telescope measurements. In the N-eff massive neutrino case the two high multipole probes give very different results regardless of the external data sets used in the combined analyses. When considering extended cosmological scenarios with a dark energy equation of state or with a running of the scalar spectral index, the evidence for neutrino masses found for the South Pole Telescope in the three neutrino scenario disappears for all the data combinations explored here. Again, adding Hubble Telescope data seems to improve the agreement between the two high multipole cosmic microwave background measurements considered here. In the case in which a dark radiation background with unknown clustering properties is also considered, SPT data seem to exclude the standard value for the dark radiation viscosity c(vis)(2) = 1/3 at the 2 sigma C.L., finding evidence for massive neutrinos only when combining SPT data with baryon acoustic oscillation measurements. The authors would like to ... |
author2 |
Ministerio de Ciencia e Innovación (España) European Institute of Innovation and Technology |
format |
Article in Journal/Newspaper |
author |
Giusarma, Elena Archidiacono, María Melchiorri, Alessandro Mena, Olga |
author_facet |
Giusarma, Elena Archidiacono, María Melchiorri, Alessandro Mena, Olga |
author_sort |
Giusarma, Elena |
title |
Neutrino and dark radiation properties in light of recent CMB observations |
title_short |
Neutrino and dark radiation properties in light of recent CMB observations |
title_full |
Neutrino and dark radiation properties in light of recent CMB observations |
title_fullStr |
Neutrino and dark radiation properties in light of recent CMB observations |
title_full_unstemmed |
Neutrino and dark radiation properties in light of recent CMB observations |
title_sort |
neutrino and dark radiation properties in light of recent cmb observations |
publisher |
American Physical Society |
publishDate |
2013 |
url |
http://hdl.handle.net/10261/126239 https://doi.org/10.1103/PhysRevD.87.103519 https://doi.org/10.13039/501100004837 https://doi.org/10.13039/501100000811 |
long_lat |
ENVELOPE(158.317,158.317,-80.867,-80.867) ENVELOPE(-66.200,-66.200,-66.817,-66.817) |
geographic |
Hubble South Pole Wilkinson |
geographic_facet |
Hubble South Pole Wilkinson |
genre |
South pole |
genre_facet |
South pole |
op_relation |
Preprint http://dx.doi.org/10.1103/PhysRevD.87.103519 Sí Physical Review - Section D - Particles and Fields 87 (10): 103519 - 10 (2013) 1550-7998 http://hdl.handle.net/10261/126239 doi:10.1103/PhysRevD.87.103519 1550-2368 http://dx.doi.org/10.13039/501100004837 http://dx.doi.org/10.13039/501100000811 |
op_rights |
open |
op_doi |
https://doi.org/10.1103/PhysRevD.87.10351910.13039/50110000483710.13039/501100000811 |
container_title |
Physical Review D |
container_volume |
87 |
container_issue |
10 |
_version_ |
1790608215468146688 |