lab snippets

Understanding the Sun’s eruptive activity, and where did the antimatter go?

By 16 avril 2020 mai 31st, 2020 No Comments

The European consortium Wholesun, coordinated by the CEA, is developing numerical models using the most powerful supercomputers in an effort to find out how the magnetic field is generated inside the Sun and how it creates solar spots and eruptions of magnetized clouds and particles. These models will be combined with observations from Solar Orbiter, an ESA satellite launched on 10 February 2020.

Image of the Sun in three colours obtained by mixing the UV spectral bands (171, 195 and 284 Angstrom) of the EIT instrument on board SoHO. Copyright: ESA/NASA.

Read more on the CEA website

Although equal amounts of matter and antimatter were created in the Big Bang, today matter dominates. New work on neutrinos and antineutrinos at the T2K experiment in Japan, in which three French laboratories (affiliated with the CNRS, École Polytechnique – Institut Polytechnique de Paris, the Sorbonne Université and the CEA) are involved, could help explain this asymmetry.

Super Kamiokande.jpg

The Super-Kamiokande detector is a tank 40 metres high and 40 metres in diameter, filled with 50,000 tonnes of ultra-pure water, and carpeted with 13,000 detectors. For its successor Hyper-K, the tank will be larger (Paris’s Notre Dame Cathedral could fit inside it) and have more sensitive detectors. The neutrino beams will also be more powerful. © Kamioka Observatory, ICRR, The University of Tokyo

Read more on the CEA website