Astrophys. Space Sci. Trans., 7, 265-269, 2011
www.astrophys-space-sci-trans.net/7/265/2011/
doi:10.5194/astra-7-265-2011
© Author(s) 2011. This work is distributed
under the Creative Commons Attribution 3.0 License.
 
05 Jul 2011
Semi-analytical model of cosmic ray electron transport
A. Ivascenko and F. Spanier
Universität Würzburg, ITPA, Lehrstuhl für Astronomie, Emil-Fischer-Str. 31, 97074 Würzburg, Germany

Abstract. We present a numerical extension to the analytical propagation model introduced in Hein and Spanier (2008) to describe the leptonic population in the galactic disc. The model is used to derive a possible identification of the components that contribute to the leptonic cosmic ray spectrum, as measured by PAMELA, Fermi and HESS, with an emphasis on secondary e+e production in collisions of cosmic ray particles with ambient interstellar medium (ISM). We find that besides secondaries, an additional source symmetric in e+ and e production is needed to explain both the PAMELA anomaly and the Fermi bump, assuming a power-law primary electron spectrum. Our model also allows us to derive constraints for some properties of the ISM.

Citation: Ivascenko, A. and Spanier, F.: Semi-analytical model of cosmic ray electron transport, Astrophys. Space Sci. Trans., 7, 265-269, doi:10.5194/astra-7-265-2011, 2011.
 
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