Speaker
Timur Delahaye
(Oskar Klein Centre)
Description
Recent results from the AMS-02 data have confirmed that the cosmic ray positron fraction increases with energy between 10 and 200GeV. This quantity should not exceed 50%, and it is hence expected that it will either converge towards 50% or fall. We study the possibility that future data may show the positron fraction dropping down abruptly to the level expected with only secondary production, and forecast the implications of such a feature in term of possible injection mechanisms that include both dark matter and pulsars.
Author
Timur Delahaye
(Oskar Klein Centre)
Co-authors
Kumiko Kotera
(Institut d'Astrophysique de Paris)
joseph silk
(IAP)
