Whereas the birth of stars can be quiet, their demise may be cataclysmic, leaving remnants with extraordinary properties: pulsars, black holes, micro-quasars… Dapnia is interested in all stages of their life cycle, including our own Sun.
last update : 02-07 00:00:00-2005 (550)
Compact objects (black holes, neutron stars and white dwarfs) play a major role in modern astrophysics. They are associated with the most exotic environments and violent phenomena of the Universe. Surrounded by extremely powerful gravitational and magnetic fields, they appear as luminous X-ray or ... More »
Studying galactic cosmic rays was one of the original choice topics in CEA’s Service d’Astrophysique (SAp). Far from being resolved, the origin of cosmic rays raises topical questions about the energy source capable of sustaining this population, about the acceleration mechanism at ... More »
Most of the known matter in the Universe is in the form of plasma. Astrophysical phenomena affect the properties of plasma in conditions that, because of their extremes of density, temperature or speed, are unknown on Earth. The study some of these properties, detected in the Sun by seismology, ... More »