Imperial College London
Alternate

ProfessorDanielMortlock

Faculty of Natural Sciences, Department of Physics

Professor of Astrophysics and Statistics
 
 
 
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Contact

 

+44 (0)20 7594 7878d.mortlock Website

 
 
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Location

 

1018ABlackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Verde:2013:09/013,
author = {Verde, L and Feeney, SM and Mortlock, DJ and Peiris, HV},
doi = {09/013},
journal = {Journal of Cosmology and Astroparticle Physics},
title = {(Lack of) Cosmological evidence for dark radiation after Planck},
url = {http://dx.doi.org/10.1088/1475-7516/2013/09/013},
volume = {2013},
year = {2013}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - We use Bayesian model comparison to determine whether extensions to Standard-Model neutrino physics — primarily additional effective numbers of neutrinos and/or massive neutrinos — are merited by the latest cosmological data. Given the significant advances in cosmic microwave background (CMB) observations represented by the Planck data, we examine whether Planck temperature and CMB lensing data, in combination with lower redshift data, have strengthened (or weakened) the previous findings. We conclude that the state-of-the-art cosmological data do not show evidence for deviations from the standard (ΛCDM) cosmological model (which has three massless neutrino families). This does not mean that the model is necessarily correct — in fact we know it is incomplete as neutrinos are not massless — but it does imply that deviations from the standard model (e.g., non-zero neutrino mass) are too small compared to the current experimental uncertainties to be inferred from cosmological data alone.
AU  - Verde,L
AU  - Feeney,SM
AU  - Mortlock,DJ
AU  - Peiris,HV
DO  - 09/013
PY  - 2013///
SN  - 1475-7516
TI  - (Lack of) Cosmological evidence for dark radiation after Planck
T2  - Journal of Cosmology and Astroparticle Physics
UR  - http://dx.doi.org/10.1088/1475-7516/2013/09/013
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000326826000013&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/73477
VL  - 2013
ER  -
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