Special Seminar- HEP Dicke Candidate-Yi Jia-MIT-"Precision Measurement of Elementary Particle and Nuclei Fluxes in Cosmic Rays with AMS on the International Space Station" (ISS)

Tue, Jan 15, 2019, 11:00 am to 12:00 pm
Jadwin 303

The Alpha Magnetic Spectrometer (AMS) is a general purpose high energy particle detector which was installed on the International Space Station (ISS) on May 19, 2011 to conduct a unique long term mission of fundamental physics research in space. To date, AMS has collected more than 130 billion charged cosmic rays with energies up to multi TeV. The latest AMS data on cosmic ray positrons show that, at high energies, they predominantly originate either from dark matter annihilations or from new astrophysical sources, not from the collisions of cosmic rays. Meanwhile, precision measurements from AMS on cosmic ray nuclei provide invaluable information on the origin and propagation of cosmic rays. The current and new results on cosmic rays have, and will continue to, change our understanding of the cosmos. 


View talk here.