Speaker
Qi Yan
(Massachusetts Inst. of Technology (US))
Description
Neon, Magnesium, Silicon, and Sulfur nuclei in cosmic rays are thought to be mainly of primary origin, they are mainly produced and accelerated in astrophysical sources. We report the latest precise measurements of the Ne, Mg, Si, and S individual spectra in the rigidity range from 2 GV to 3 TV by the Alpha Magnetic Spectrometer based on the data collected during its first 7 years of operation. Unexpectedly, compared with the spectra of light nuclei Helium, Carbon, and Oxygen, the spectra of heavy nuclei Ne, Mg, Si, and S show distinctly different new properties.
Primary author
Qi Yan
(Massachusetts Inst. of Technology (US))
Co-authors
Vitaly Choutko
(Massachusetts Inst. of Technology (US))
Alberto Oliva
(Universita e INFN, Bologna (IT))
Mercedes Paniccia
(Universite de Geneve (CH))
