Introduction, objectifs, et mise en perspective - Mai 2018

1. Philae Landing on Comet 67P/Churyumov-Gerasimenko – Planned Chirality Measurements and Ideas for the Future

Ulamec , Stephan ; Goesmann , Fred ; Meierhenrich , Uwe.
Philae is a comet Lander, part of the ESA Rosetta Mission to comet 67P/Churyumov-Gerasimenko. After a ten year cruise through the solar system it successfully landed on the nucleus of the comet on November 12, 2014. Philae's payload consists of ten scientific instruments, including COSAC, an evolved gas analyser with the capability to differentiate chiral molecules. After the touchdown of Philae, the anchoring harpoons, which were expected to fix the lander to ground, did not work, Philae bounced in the low gravity environment, and only came to rest after a 2 hours " hop " in an unforeseen area on the comet surface. Although, the scientific instruments, including cameras, mass spectrometers (including the one of COSAC), a magnetometer and a radar instrument could be operated, and fascinating, unprecedented scientific results were obtained, it was not possible to collect a sample of the surface material and no gas chromatography measurement could be performed. Thus, the […]

2. On asymmetries in optics: fundamental considerations and some current applications

Lippi G.
International audience
Rubrique : Systèmes Complexes

3. Échanges asymétriques

Bouissou , Caroline ; Petitjean , Michel.
Nous soulignons le caractère asymétrique des échanges entre artistes et scientifiques ou mathématiciens dans le cadre de collaborations multidisciplinaires. Comme exemple, nous considérons la symétrie dans une œuvre présentée au symposium FEAS (First European Asymmetry Symposium), Nice, 15-16 mars 2018, et son lien potentiel avec le problème ouvert des figures et distributions d'asymétrie maximale ou asymptotiquement maximale.
Rubrique : Systèmes Complexes