MAGIC telescopes for the study of the electronic cosmic flux

The IACT technique (Imaging Atmospheric Cherenkov Telescopes) allowed recent Cherenkov telescopes to obtain several relevant measurements in the field of Gamma Astronomy. The main field of investigation is the cosmic photon radiation of energy between 50 GeV and few tens of TeV. Furthermore, with a dedicated analysis, IACTs may also be used to measure the electronic component of cosmic rays. Such particles, with energies of several hundreds of GeV, have a rather short lifetime, of the order of 105 years. The spectral structure of this radiation yields therefore information on the nearby sources, within the distance of 1 kpc, giving also cosmological and fundamental physics implications. MAGIC experiment can give a contribute in the measurement of two different components: the total flux of cosmic electrons and positrons (e+ + e− ) and the ratio between positrons and electrons (e+/e− ), as here presented.