Speaker
Prof.
Kenji Yoshida
(Shibaura Institute of Technology)
Description
Over the last decade, highly accurate high-energy cosmic-ray electron energy spectra have been obtained with superior instruments such as CALET. Their energy spectra, which show characteristic structures, have the potential to unveil the origin of cosmic-ray electrons whose most likely candidates are supernova remnants (SNRs). In this work, we estimate the intragalactic temporal and spatial distributions of SNRs from the observed electron spectra. We apply genetic algorithms to represent the observed electron spectra with the calculated flux of high-energy electrons from SNRs distributed in the Galaxy. This work will allow us to verify the SNR origin hypothesis of cosmic rays and to predict the ages/distances of unknown SNRs.
Authors
Shunji Igarashi
(Shibaura Institute of Technology)
Prof.
Kenji Yoshida
(Shibaura Institute of Technology)
