Ionization rates in the heliosheath and in astrosheaths - Spatial dependence and dynamical relevanceK. Scherer, H. Fichtner, H.-J. Fahr, M. Bzowski and S. E. S. FerreiraA&A, 563 (2014) A69DOI: https://doi.org/10.1051/0004-6361/201321151