Celine's Page


L'algèbre est dans l'astronomie,
et l'astronomie touche à la poésie ;

L'algèbre est dans la musique,
et la musique touche à la poésie.

L'esprit de l'homme a trois clefs qui ouvrent tout :
le chiffre, la lettre, la note.
Savoir, penser, rêver.
Tout est là.

'Les rayons et les ombres'
Victor Hugo - 4 Mai 1840.

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    • My Research Interests

    Surprisingly, only a minority of the normal matter can be probed by observations of starlight from galaxies. I'm interested in studying the remaining 90% of the baryons traced by the intergalactic gas. My overarching objective is to study the physical processes by which gas travels into, through, and out of galaxies. These processes may collectively be described as the cosmic baryon cycle. Such studies are essential to understand the formation of galaxies and the growth of structure in the Universe and hence impact the fields of astrophysics and cosmology.

    I led a 5-year ANR-funded senior project on the "History of baryons: the intergalactic medium/galaxies co-evolution".


    Some of my astronomical pictures:

    Hale Bopp comet (France - 1997)

    South Pole (Australia - 1998)

    Solar eclipse (Channel Islands - 1999)