The research themes of the IJCLab's Astroparticles, Astrophysics and Cosmology (A2C) cluster aim to deepen our understanding of the Universe. They cover various topics:

• the origins of the solar system and the creation of chemical elements
• the description of the most violent phenomena of our galaxy and the Universe (associated with the explosion of stars and black holes)
• characterising the nature of dark energy, neutrinos and dark matter
• studying the early Universe, from its formation to its evolution
• understanding the nature of gravitation

This research programme is carried out through international collaborations and is based on observation thanks to large infrastructures and instruments: polar bases, underground laboratories, astronomical observatories from the ground, space missions and experiments in stratospheric balloons.

The activities of the A2C cluster teams include Research and Development as well as technical participation in projects (cryogenic bolometry and CDD, gamma-ray detectors, digital electronics for the 21 cm, squeezing techniques on Virgo, etc.), instrument calibration and integration, and scientific data interpretation and analysis.

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