Positron decrement in AMS-02 compared to Pamela, due to solar cycle
J.P. Roberts
TL;DR
This paper predicts a decrease in the positron fraction above 40GeV in AMS-02 data compared to PAMELA, due to solar cycle effects on cosmic ray transport.
Contribution
It introduces a numerical simulation model of cosmic ray transport that accounts for solar cycle variations affecting positron measurements.
Findings
AMS-02 expected to observe a decreased positron fraction above 40GeV.
Simulation results align with observed differences between AMS-02 and PAMELA.
Highlights the impact of solar cycle on high-energy cosmic ray measurements.
Abstract
We present a numerical simulation of cosmic ray transport in the heliosphere and show that AMS-02 should observe a decrease in the positron fraction above 40GeV compared to the fraction observed by PAMELA.
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Taxonomy
TopicsSolar and Space Plasma Dynamics · Ionosphere and magnetosphere dynamics · Dark Matter and Cosmic Phenomena