Jul 5 – 12, 2017
Venice, Italy
Europe/Zurich timezone
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Unmasking the ultrahigh-energy cosmic ray origin

Jul 8, 2017, 10:30 AM
15m
Room Casinò (Palazzo del Casinò)

Room Casinò

Palazzo del Casinò

Parallel Talk Astroparticle Physics Astroparticle physics

Speaker

Prof. Luis Anchordoqui (Lehman College, City University of New York)

Description

The sharp change in slope of the ultrahigh-energy cosmic ray (UHECR) spectrum around 10^9.6 GeV (the ankle), combined with evidence of a light but extragalactic component near and below the ankle which evolves to intermediate composition above, has proved exceedingly challenging to understand theoretically. Recently, we introduced a very general model, in which for a range of source conditions, photo-disintegration of ultrahigh-energy nuclei in the region surrounding the UHECR accelerator naturally accounts for the observed spectrum and composition of the entire extragalactic component, which dominates above about 10^8.5 GeV. In this talk I will review the generalities of the model and show that starburst galaxies provide a compelling source example.

Primary author

Prof. Luis Anchordoqui (Lehman College, City University of New York)

Presentation materials