96 citations · 740 across the 17 of their papers we have counts for
18 papers
Secondary Cosmic Positrons in an Inhomogeneous Diffusion Model
Rolf Kappl, Annika Reinert
One aim of cosmic ray measurements is the search for possible signatures of annihilating or decaying dark matter. The so-called positron excess has attracted a lot of attention in…
Charge-sign dependent solar modulation for everyone
Rolf Kappl
We present a tool to compute the influence of charge-sign dependent solar modulation for cosmic ray spectra. The code is publicly available, easy to use and offers an extended view…
SOLARPROP: Charge-sign Dependent Solar Modulation for Everyone
Rolf Kappl
We present SOLARPROP, a tool to compute the influence of charge-sign dependent solar modulation for cosmic ray spectra. SOLARPROP is able to use the output of popular tools like GA…
Modulated Natural Inflation
Rolf Kappl, Hans Peter Nilles, Martin Wolfgang Winkler
We discuss some model-independent implications of embedding (aligned) axionic inflation in string theory. As a consequence of string theoretic duality symmetries the pure cosine po…
AMS-02 Antiprotons Reloaded
Rolf Kappl, Annika Reinert, Martin Wolfgang Winkler
The AMS-02 collaboration has released preliminary data on the antiproton fraction in cosmic rays. The surprisingly hard antiproton spectrum at high rigidity has triggered speculati…
Natural Inflation and Low Energy Supersymmetry
Rolf Kappl, Hans Peter Nilles, Martin Wolfgang Winkler
Natural (axionic) inflation provides a well-motivated and predictive scheme for the description of the early universe. It leads to sizeable primordial tensor modes and thus a high…