Last update on 23 November 2016
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 "The anatomy of the Orion B Giant Molecular Cloud: A local template for studies of nearby galaxies", by Pety et al., has been accepted for publication in Astronomy & Astrophysics. It presents wide-band 3mm (84-116 GHz) observations of almost 1 square degree in the Orion B Giant Molecular Cloud (GMC), at high spectral and spatial resolutions. We exhibit relations between molecular spectral line intensities and gas column density or far-UV radiation fields, and correlations between selected line and line ratios. Our initial findings demonstrate that the relations between line (ratio) intensities and the environment in GMCs are more complicated than often assumed. Molecular column density, excitation, and above all chemistry contribute to the observed line intensity distributions. They must be considered together when developing the next generation of extra-galactic molecular line diagnostics of mass, density, temperature and radiation field. 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)
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 !
PhD Thesis
 Dynamics and chemistry in the interstellar medium : a stepping stone on the pathway to star formation [Description]
M2 Level
 Anisotropic models of polarized thermal dust emission from the magnetized interstellar medium [Description]
M1 Level
 Polarization Measurement analysis [Description] [Slide]

Manuel Berthet has been working on a PhD thesis since september 2013 : The shaping of the interstellar web by turbulence and magnetic fields [Description]

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
 Brice Poillot [2011] : Development of extragalactic simulations for the Square Kilometer Array radio-interferometer [Slide] [Report]

Joey, you like movies about gladiators ?