Modeling the acceleration and modulation of anomalous cosmic ray oxygen

作者：Strauss R D^*; Potgieter M S; Ferreira S E S

来源：Advances in Space Research, 2011, 48(1): 65-75.

DOI：10.1016/j.asr.2011.03.014

• Anomalous cosmic rays
• Acceleration
• Heliosheath
• Gradients

After the solar wind termination shock crossings of the Voyager spacecraft, the acceleration of anomalous cosmic rays has become a very contentious subject. In this paper we examine several topics pertinent to anomalous cosmic ray oxygen acceleration and transport using a numerical cosmic ray modulation model. These include the effects of drifts on a purely Fermi I accelerated spectra, the effects of introducing higher charge states of oxygen into the modulation model, examining the viability of momentum diffusion as a re-acceleration process in the heliosheath and examining energy spectra, and intensity gradients, in the inner heliosphere during consecutive drift cycles.

• 出版日期2011-7-1
• 单位西北大学