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Cosmic Dark Radiation and Neutrinos
Joint Authors
Archidiacono, Maria
Hannestad, Steen
Giusarma, Elena
Mena, Olga
Source
Advances in High Energy Physics
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-11-27
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
New measurements of the cosmic microwave background (CMB) by the Planck mission have greatly increased our knowledge about the universe.
Dark radiation, a weakly interacting component of radiation, is one of the important ingredients in our cosmological model which is testable by Planck and other observational probes.
At the moment, the possible existence of dark radiation is an unsolved question.
For instance, the discrepancy between the value of the Hubble constant, H0, inferred from the Planck data and local measurements of H0 can to some extent be alleviated by enlarging the minimal ΛCDM model to include additional relativistic degrees of freedom.
From a fundamental physics point of view, dark radiation is no less interesting.
Indeed, it could well be one of the most accessible windows to physics beyond the standard model, for example, sterile neutrinos.
Here, we review the most recent cosmological results including a complete investigation of the dark radiation sector in order to provide an overview of models that are still compatible with new cosmological observations.
Furthermore, we update the cosmological constraints on neutrino physics and dark radiation properties focusing on tensions between data sets and degeneracies among parameters that can degrade our information or mimic the existence of extra species.
American Psychological Association (APA)
Archidiacono, Maria& Giusarma, Elena& Hannestad, Steen& Mena, Olga. 2013. Cosmic Dark Radiation and Neutrinos. Advances in High Energy Physics،Vol. 2013, no. 2013, pp.1-14.
https://search.emarefa.net/detail/BIM-453211
Modern Language Association (MLA)
Archidiacono, Maria…[et al.]. Cosmic Dark Radiation and Neutrinos. Advances in High Energy Physics No. 2013 (2013), pp.1-14.
https://search.emarefa.net/detail/BIM-453211
American Medical Association (AMA)
Archidiacono, Maria& Giusarma, Elena& Hannestad, Steen& Mena, Olga. Cosmic Dark Radiation and Neutrinos. Advances in High Energy Physics. 2013. Vol. 2013, no. 2013, pp.1-14.
https://search.emarefa.net/detail/BIM-453211
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-453211