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Cosmic rays: towards a consistent approach to a 12 orders-of-magnitude energy spectrum
  OKC colloquia

Tuesday 20 October 2015
from 13:15 to 15:00
at FA31
Speaker : Etienne Parizot (Paris Diderot University)
Abstract : One century after their discovery, the study of cosmic rays remains one of the most active research field in astrophysics. Their energy spectrum extends with a remarkable regularity over more than 12 orders of magnitude in energy, 32 orders of magnitude in flux, raising important observational as well as theoretical challenges Although they play a major role in the “ecology” of the Galaxy, their sources remain essentially unknown, and their acceleration mechanisms are also a subject of intense research, with implications for high-energy astrophysics and astroparticle physics in general. I will review some important aspects of the problem, and show how a global view over the entire spectrum, linking Galactic cosmic rays to extragalactic ones, can help addressing the main open questions regarding their phenomenology and constraining the astrophysical models. I will also present the current instrumental efforts to develop the study of the so-called ultra-high-energy cosmic rays through a space-based observatory, within the international EUSO collaboration. (host: Fugelsang)

AlbaNova  | Last modified 12 October 2015 14:42  |  HELP