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I'm an astrophysicist \& University Professor studying the formation and the evolution of the
clusters and galaxies with infrared space telescopes.
In more details, I'm a professor at the
Université Paris-Saclay in
Orsay, at the Institut d'Astrophysique Spatiale
(IAS). I am
a honorary member of the Institut Universitaire de France
(IUF, 2010-2015). In 2014-15, I was deputy Director of IAS.
Before, I was a Research Associate at
the Steward Observatory of
the University of Arizona in
Tucson. Even before, I was completing my PhD
Thesis in France, at the IAS in Orsay, France.
I'm interested in the emergence of large scale structure,
esp. galaxy proto-clusters, and the role of
infrared galaxies in
the history of the Universe, and try to understand the physical
processes driving the formation and the evolution of galaxies. I'm
also interessted in understanding the relic emission of galaxies, the
extragalactic background light. To do so, I'm observing galaxies and
the Cosmic Infrared Background (the relic emission of galaxies) with
IR space telescopes like
Planck, Herschel, Spitzer
or ISO and also develop new
analysis tools and models. I'm heavily involved now in Euclid and JWST as well.
In addition to the research activities, I'm teaching Physics,
Astrophysics, Cosmology at University, and am involved in or initiate
activities of popularization of astrophysics, like writing a book, giving public
lectures (TEDx talks, etc.), going to an elementary school, participating in the life of
a few associations, or writing articles in the press.
In 2020-24+, I'm Vice-President of the University Paris-Saclay in Art, Culture, Science and Society.
In 2016-2020, I was Vice-President of the University Paris-Sud (a
founding member of the university Paris-Saclay), in
charge of Education and Public Outreach, Arts and Culture.
As you might see on this web site, I also like to travel, hike,
run (even marathons and beyond, up to 80km so far !), take pictures, cook/taste, listen to
baroque music, watch the starry nights, rethink the world with friends
in think tanks, and many other things.
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