Last update on 20 March 2019
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 Planck collaboration has made public its third data release, alongisde a series of eight "legacy" papers. Vincent Guillet and I have led one of these papers, "Planck 2018 results. XII. Galactic astrophysics using polarized dust emission", which has been accepted for publication in Astronomy & Astrophysics. In this paper, we present full-sky maps of the polarization properties of Galactic dust thermal emission at 353 GHz, and provide a statistical analysis of these maps, showing that the observed inverse behaviour between the polarization fraction and the dispersion of polarization angles is consistent with models of the polarized sky that include effects from only the topology of the turbulent Galactic magnetic field. Thus, the statistical polarization properties mostly reflect the structure of the magnetic field. Potential signatures of varying grain alignment and dust properties are weak. A comparison of Planck data with starlight polarization in the visible at high latitudes yields strong constraints for models of Galactic dust in diffuse gas. 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]

- Does it run, like, on regular unleaded gasoline?
- Unfortunately, no. It requires something with a little more kick... plutonium!