Julien Lesgourgues

Cette personne n’est plus à l’EPFL

À propos
Confidentialité
Mentions légales

Graph Chatbot

Publications associées (71)

Planck 2013 results. XII. Diffuse component separation

Julien Lesgourgues, Xin Chen, Fabio Finelli

Planck has produced detailed all-sky observations over nine frequency bands between 30 and 857 GHz. These observations allow robust reconstruction of the primordial cosmic microwave background (CMB) temperature fluctuations over nearly the full sky, as wel ...

Edp Sciences S A2014

Constraints on primordial non-Gaussianity

Julien Lesgourgues, Fabio Finelli

The Planck nominal mission cosmic microwave background (CMB) maps yield unprecedented constraints on primordial non-Gaussianity (NG). Using three optimal bispectrum estimators, separable template-fitting (KSW), binned, and modal, we obtain consistent value ...

Edp Sciences S A2014

Planck 2013 results. XXIX. The Planck catalogue of Sunyaev-Zeldovich sources

Julien Lesgourgues, Xin Chen, Fabio Finelli

We describe the all-sky Planck catalogue of clusters and cluster candidates derived from Sunyaev-Zeldovich (SZ) effect detections using the first 15.5 months of Planck satellite observations. The catalogue contains 1227 entries, making it over six times th ...

Edp Sciences S A2014

Planck 2013 results. XXVIII. The Planck Catalogue of Compact Sources

Julien Lesgourgues, Xin Chen, Fabio Finelli, Benjamin Andreas Walter

The Planck Catalogue of Compact Sources (PCCS) is the catalogue of sources detected in the first 15 months of Planck operations, the "nominal" mission. It consists of nine single-frequency catalogues of compact sources, both Galactic and extragalactic, det ...

Edp Sciences S A2014

Planck 2013 results. XVIII. The gravitational lensing-infrared background correlation

Julien Lesgourgues, Fabio Finelli

The multi-frequency capability of the Planck satellite provides information both on the integrated history of star formation (via the cosmic infrared background, or CIB) and on the distribution of dark matter (via the lensing effect on the cosmic microwave ...

Edp Sciences S A2014

Planck 2013 results. XIII. Galactic CO emission

Julien Lesgourgues, Xin Chen, Fabio Finelli

Rotational transition lines of CO play a major role in molecular radio astronomy as a mass tracer and in particular in the study of star formation and Galactic structure. Although a wealth of data exists for the Galactic plane and some well-known molecular ...

Edp Sciences S A2014

Constraining dark matter-neutrino interactions using the CMB and large-scale structure

Julien Lesgourgues

We present a new study on the elastic scattering cross section of dark matter (DM) and neutrinos using the latest cosmological data from Planck and large-scale structure experiments. We find that the strongest constraints are set by the Lyman-a forest, giv ...

Iop Publishing Ltd2014

Cosmological parameter estimation with large scale structure observations

Julien Lesgourgues, Ruth Durrer

We estimate the sensitivity of future galaxy surveys to cosmological parameters, using the redshift dependent angular power spectra of galaxy number counts, C-l(z(1), z(2)), calculated with all relativistic corrections at first order in perturbation theory ...

Iop Publishing Ltd2014

Planck 2013 results. XVI. Cosmological parameters

Julien Lesgourgues, Xin Chen, Fabio Finelli, Jan Hamann

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 spectra at high multipoles (l greater than or similar to 40) a ...

Edp Sciences S A2014

Planck 2013 results. II. Low Frequency Instrument data processing

Julien Lesgourgues, Xin Chen, Fabio Finelli

We describe the data processing pipeline of the Planck Low Frequency Instrument (LFI) data processing centre (DPC) to create and characterize full-sky maps based on the first 15.5 months of operations at 30, 44, and 70 GHz. In particular, we discuss the va ...

Edp Sciences S A2014

Page 3 sur 8