Corpus ID: 119249667

Antiproton Flux in Cosmic Ray Propagation Models with Anisotropic Diffusion

  title={Antiproton Flux in Cosmic Ray Propagation Models with Anisotropic Diffusion},
  author={Phill Grajek and Kaoru Hagiwara},
  journal={arXiv: High Energy Astrophysical Phenomena},
Recently a cosmic ray propagation model has been introduced, where anisotropic diffusion is used as a mechanism to allow for $\mathcal{O}(100)$ km/s galactic winds. This model predicts a reduced antiproton background flux, suggesting an excess is being observed. We implement this model in GALPROP v50.1 and perform a $\chi^2$ analysis for B/C, $^{10}$Be/$^{9}$Be, and the recent PAMELA $\bar{p}/p$ datasets. By introducing a power-index parameter $\alpha$ that dictates the dependence of the… 

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