Last update on 07 May 2018
François Levrier
Maître de conférences de l'ENS Paris

Directeur adjoint du centre interuniversitaire de préparation à l'agrégation de physique (Montrouge)
Correspondant ENS du Master "Astronomie, Astrophysique et Ingénierie Spatiale"
Laboratoire de radioastronomie
Département de Physique
École Normale Supérieure de Paris
24 rue Lhomond, 75231 Paris CEDEX 05, FRANCE

Office HL102A
Tel : +33 1 44 32 39 93
Fax : +33 1 44 32 39 92
e-mail :

The paper "On the statistics of the polarized submillimetre emission maps from thermal dust in the turbulent, magnetized, diffuse ISM" has been accepted for publication in Astronomy & Astrophysics. It presents an analysis framework which is based on simulating polarized thermal dust emission maps using model dust density (proportional to gas density) and magnetic field cubes, integrated along the line of sight, and comparing these statistically to actual data. The model fields are derived from fBm processes, which allow a precise control of their one- and two-point statistics. We explore the nine-dimensional parameter space of these models through a MCMC analysis, which yields best-fitting parameters and associated uncertainties. We apply that framework to Planck maps of the Polaris Flare molecular cloud. The preprint for the paper is available here.

[older news]

 Research interests
Interstellar medium structure and dynamics
New techniques in radio-interferometry and astronomical data analysis
Databases and virtual observatory initiatives
[and many more...]
 Teaching activities
"Préparation à l'agrégation" in physics (deputy director)
Radiative transfer course at M2 AAIS
Astrophysics TD at ENS Physics FIP
 Academic education
Graduate from ENS Paris (1996-2000)
"Agrégé" in Physics (2000)
Ph.D. in Astrophysics (2004)
HDR in Astrophysics (2016)
Looking for the S3-Tools?  They're here...
N.B. Major bug fix on 6 and 7 march 2012. Make sure you have the latest version !
INTERNSHIPS / PhDs  Available subjects - Get in touch !
Post-docs Look for offers within the MIST ERC project here and BxB ANR project here.
PhD Thesis
 Towards realistic models of polarized foregrounds for future CMB space missions [Description]
M2 Level No current proposal

M2 Level
 Bruno Régaldo-Saint Blancard [2018] : Using the wavelet scattering transform to assess the weak lensing on CMB maps.

PhD Thesis
Manuel Berthet [2013-2017]
M2 Level
 Bilal Ladjelate [2013] : Models of the physical and chemical structures of interstellar molecular clouds [Poster] [Report]
 Manuel Berthet [2012] : Filament and magnetic field orientation statistics in the diffuse ISM at large and small scales [Poster] [Report] [Defence]
 Rémi Paulin [2011] : Lifetimes of interstellar clouds [Poster] [Report]
M1 Level
 Antoine Maby [2017] : Polarization Measurement analysis [Description] [Slide] [Report]
 Brice Poillot [2011] : Development of extragalactic simulations for the Square Kilometer Array radio-interferometer [Slide] [Report]

This new learning amazes be, Sir Bedevere! Explain how again how sheep's bladders may be used to prevent earthquakes