Astrophysics Division
CEA Saclay

UMR Astrophysics Instrumentation Modelisation

picto-accueil Our research laboratories


Oct 1st, 2018

Tracing the Universe: a new X-ray survey bring a new light


Sep 26th, 2018

MXT camera first light


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Oct 23rd, 2018

Towards linking core-collapse supernova simulations with observations


Nov 6th, 2018

The MXT project at DAp: building an X-ray camera for time domain astrophysics


Nov 20th, 2018

Structures in the cosmos: what they tell us about neutrinos and warm dark matter


Dec 18th, 2018

[TBA] R. Schneider


Jan 8th, 2019

Direct Imaging of Exoplanets with VLT/SPHERE: Past, Present and Future


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The oscillations of the Sun are reflected by the planet Neptune



The observation program of the future giant space telescope JWST


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picto 1 Research laboratories


The Astrophysics Division

A major space astrophysics laboratory

The Service d'Astrophysique (SAp - UMR AIM) is among the major space laboratories in France, in Europe and internationally. In direct collaboration with CNES, which is responsible for the space activities of French laboratories, SAp is strongly involved in space missions for ESA's Cosmic Vision scientific program and on bilateral missions supported by CNES. The development of astrophysics at the CEA began in partnership with CNES since its creation in the early 1960s. Astrophysics has since been a growing science with high potential for discoveries. Instruments, ever more numerous and more powerful, whether from the ground or on board satellites, make it possible to probe the universe with increased angular resolution and sensitivity across the full range of the electromagnetic spectrum. Meanwhile, modeling, particularly using computational simulations, is of increasing importance in astrophysics; astrophysical problems are mostly complex problems that involve other disciplines of physics. Astrophysics and other fields of physics enrich each other.

The Astrophysics division

The SAp-UMR AIM includes nearly 200 people, including 130 permanent staff mainly UMR AIM, a joint research unit CNRS-CEA-Paris Diderot and also of the Astroparticle and Cosmology UMR APC, CEA-CNRS -University Denis Diderot-Paris Observatory. The Astrophysics Service brings together researchers, engineers and technicians from the Service d'Astrophysique at CEA Irfu as well as research engineers at Sedi Irfu, the Université Paris Diderot and CNRS.


Our scientific projects

picto 3Astrophysics

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Developing instruments

picto 4 Instrumentation

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Modelling the Universe

picto 5 Modelisation

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Knowledge management of data archives

picto 6 Data

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