J. Lesgourgues

Publications302
h-index92
Citations47,580
Highly Influential Citations1,752
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Planck 2015 results - XIII. Cosmological parameters
This paper presents cosmological results based on full-mission Planck observations of temperature and polarization anisotropies of the cosmic microwave background (CMB) radiation. Our results are in…
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Planck 2013 results. XVI. Cosmological parameters
This paper presents the first cosmological results based on Planck measurements of the cosmic microwave background (CMB) temperature and lensing-potential power spectra. We find that the Planck…
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The Cosmic Linear Anisotropy Solving System (CLASS). Part II: Approximation schemes
TLDR
Three approximations used by CLASS for basic �CDM models are described, namely: a baryon-photon tight-coupling approximation which can be set to first order, second order or to a compromise between the two; an ultra-relativistic fluid approximation which had not been implemented in public distributions before; and finally a radiation streaming approximation taking reionisation into account.
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Planck 2018 results. X. Constraints on inflation
We report on the implications for cosmic inflation of the 2018 release of the Planck cosmic microwave background (CMB) anisotropy measurements. The results are fully consistent with those reported…
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The Cosmic Linear Anisotropy Solving System (CLASS) I: Overview
TLDR
This overview presents the general principles of CLASS, a new accurate Boltzmann code designed to offer a more user-friendly and flexible coding environment to cosmologists, and insists on the friendliness and flexibility aspects.
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Constraining warm dark matter candidates including sterile neutrinos and light gravitinos with WMAP and the Lyman-{alpha} forest
The matter power spectrum at comoving scales of $(1\ensuremath{-}40){h}^{\ensuremath{-}1}\text{ }\text{ }\mathrm{Mpc}$ is very sensitive to the presence of Warm Dark Matter (WDM) particles with large…
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Massive neutrinos and cosmology
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Euclid Definition Study Report
Euclid is a space-based survey mission from the European Space Agency designed to understand the origin of the Universe's accelerating expansion. It will use cosmological probes to investigate the…
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Planck 2013 results. XXII. Constraints on inflation
We present the implications for cosmic inflation of the Planck measurements of the cosmic microwave background (CMB) anisotropies in both temperature and polarization based on the full Planck survey,…
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Planck 2013 results. I. Overview of products and scientific results
The European Space Agency’s Planck satellite, dedicated to studying the early Universe and its subsequent evolution, was launched 14 May 2009 and has been scanning the microwave and submillimetre sky…
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