MlleJennifer for the Pierre Auger Collaboration Maller(Subatech)
06/12/2013 14:00
Astroparticules
Deployed at the end of 2010 at the Pierre Auger Observatory, the first stage of the Auger Engineering Radio Array, AERA24, consists of 24 radio stations covering an area of 0.5 km². AERA measures the radio emission from cosmic-ray induced air showers. This electric field is used to constrain the characteristics of the primary particle: arrival direction, energy and nature. These studies are...
From the observation of the Universe, we know that the mass associated to visible matter represents only few percent of it, while the remaining part is composed by dark energy, responsible to the cosmological expansion, and by some hidden matter, the dark matter.
The likeliest particles family used to describe this dark matter is called WIMPs (Weakly Interacting Massive Particles). That...
Les expériences Virgo et LIGO sont des interféromètres de Michelson dotés de bras de 3 km, conçus pour détecter les ondes gravitationnelles. Ces ondes, prédites par la Relativité Générale d'Einstein, constituent un tout nouveau vecteur d'information astronomique. Avec elles nous espérons en apprendre davantage sur des objets célestes méconnus, comme les étoiles à neutrons et les trous noirs....