Publications associées à Fond diffus cosmologique

Neutrino masses and cosmology with Lyman-alpha forest power spectrum

We present constraints on neutrino masses, the primordial fluctuation spectrum from inflation, and other parameters of the ACDM model, using the one-dimensional Ly alpha-forest power spectrum measured by [1] from the Baryon Oscillation Spectroscopic Survey ...

Iop Publishing Ltd2015

Robustness of cosmic neutrino background detection in the cosmic microwave background

Julien Lesgourgues, Benjamin Audren

The existence of a cosmic neutrino background can be probed indirectly by CMB experiments, not only by measuring the background density of radiation in the universe, but also by searching for the typical signatures of the fluctuations of free-streaming spe ...

Iop Publishing Ltd2015

Constraint on neutrino masses from SDSS-III/BOSS Ly alpha forest and other cosmological probes

Julien Lesgourgues, Arnaud Borde

We present constraints on the parameters of the ACDM cosmological model in the presence of massive neutrinos, using the one-dimensional Ly alpha forest power spectrum obtained with the Baryon Oscillation Spectroscopic Survey (BOSS) of the Sloan Digital Sky ...

Iop Publishing Ltd2015

Warm-hot baryons comprise 5-10 per cent of filaments in the cosmic web

Jean-Paul Richard Kneib, Mathilde Jauzac, Céline Tchernin, Richard Massey, Johan Richard

Observations of the cosmic microwave background indicate that baryons account for 5 per cent of the Universe's total energy content(1). In the local Universe, the census of all observed baryons falls short of this estimate by a factor of two(2,3). Cosmolog ...

Nature Publishing Group2015

Cosmological implications of baryon acoustic oscillation measurements

Jean-Paul Richard Kneib, Johan Comparat, David Schlegel, Timothée Guy Olivier Delubac

We derive constraints on cosmological parameters and tests of dark energy models from the combination of baryon acoustic oscillation (BAO) measurements with cosmic microwave background (CMB) data and a recent reanalysis of Type Ia supernova (SN) data. In p ...

Amer Physical Soc2015

First measurement of the cross-correlation of CMB lensing and galaxy lensing

Jean-Paul Richard Kneib, Huanyuan Shan

We measure the cross-correlation of cosmic microwave background (CMB) lensing convergence maps derived from Atacama Cosmology Telescope data with galaxy lensing convergence maps as measured by the Canada-France-Hawaii Telescope Stripe 82 Survey. The CMB-ga ...

Amer Physical Soc2015

Planck 2013 results. XXXII. The updated Planck catalogue of Sunyaev-Zeldovich sources

Xin Chen, Julien Lesgourgues, Fabio Finelli

We update the all-sky Planck catalogue of 1227 clusters and cluster candidates (PSZ1) published in March 2013, derived from detections of the Sunyaev-Zeldovich (SZ) effect using the first 15.5 months of Planck satellite observations. As an addendum, we del ...

Edp Sciences S A2015

Cosmological constraints on deviations from Lorentz invariance in gravity and dark matter

Julien Lesgourgues, Sergey Sibiryakov, Diego Blas Temino, Mikhail Ivanov, Benjamin Audren

We consider a scenario where local Lorentz invariance is violated by the existence of a preferred time direction at every space-time point. This scenario can arise in the context of quantum gravity and its description at low energies contains a unit time-l ...

Iop Publishing Ltd2015

ARE ULTRA-FAINT GALAXIES AT z=6-8 RESPONSIBLE FOR COSMIC REIONIZATION? COMBINED CONSTRAINTS FROM THE HUBBLE FRONTIER FIELDS CLUSTERS AND PARALLELS

Jean-Paul Richard Kneib, Benjamin Yvan Alexandre Clement, Mathilde Jauzac, Hakim Atek, Johan Richard

We use deep Hubble Space Telescope imaging of the Frontier Fields to accurately measure the galaxy rest-frame ultraviolet luminosity function (UV LF) in the redshift range z similar to 6-8. We combine observations in three lensing clusters, A2744, MACS 041 ...

Iop Publishing Ltd2015

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Fond diffus cosmologique

Neutrino masses and cosmology with Lyman-alpha forest power spectrum

Robustness of cosmic neutrino background detection in the cosmic microwave background

Constraint on neutrino masses from SDSS-III/BOSS Ly alpha forest and other cosmological probes

Warm-hot baryons comprise 5-10 per cent of filaments in the cosmic web

Cosmological implications of baryon acoustic oscillation measurements

First measurement of the cross-correlation of CMB lensing and galaxy lensing

Planck 2013 results. XXXII. The updated Planck catalogue of Sunyaev-Zeldovich sources

Cosmological constraints on deviations from Lorentz invariance in gravity and dark matter

ARE ULTRA-FAINT GALAXIES AT z=6-8 RESPONSIBLE FOR COSMIC REIONIZATION? COMBINED CONSTRAINTS FROM THE HUBBLE FRONTIER FIELDS CLUSTERS AND PARALLELS

Cosmology with self-interacting sterile neutrinos and dark matter: A pseudoscalar model

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Chattez avec Graph Search

Cosmology with self-interacting sterile neutrinos and dark matter: A pseudoscalar model

Cosmological constraints on deviations from Lorentz invariance in gravity and dark matter

Neutrino masses and cosmology with Lyman-alpha forest power spectrum

Robustness of cosmic neutrino background detection in the cosmic microwave background

Cosmological implications of baryon acoustic oscillation measurements

Constraint on neutrino masses from SDSS-III/BOSS Ly alpha forest and other cosmological probes

ARE ULTRA-FAINT GALAXIES AT z=6-8 RESPONSIBLE FOR COSMIC REIONIZATION? COMBINED CONSTRAINTS FROM THE HUBBLE FRONTIER FIELDS CLUSTERS AND PARALLELS

Warm-hot baryons comprise 5-10 per cent of filaments in the cosmic web

First measurement of the cross-correlation of CMB lensing and galaxy lensing

Planck 2013 results. XXXII. The updated Planck catalogue of Sunyaev-Zeldovich sources