The DAMPE satellite sheds light on the origin of cosmic rays
The DAMPE satellite has made a major breakthrough in understanding the origin of cosmic rays by identifying a universal feature in their energy spectra. The discovery supports models that explain the acceleration and transport of cosmic rays depend on the particles' rigidity.
The DAMPE space telescope, launched in December 2015, has made a crucial breakthrough in understanding cosmic rays. The international mission, including the University of Geneva, analyzed high-precision measurements and identified a universal feature in the energy spectra of primary cosmic ray nuclei. The results show that the number of particles decreases rapidly beyond a certain value, a phenomenon called 'spectral softening', around a rigidity of about 15 TV. This observation strongly supports models that explain the acceleration and transport of cosmic rays depend on the particles' rigidity. The Geneva team played a central role in this scientific breakthrough, developing advanced artificial intelligence techniques and contributing to key measurements. The results provide new experimental constraints on acceleration models in astrophysical sources.
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