Free Access
Fig. 2

Mathematical treatment of the flow. We erect a spherical coordinate system centered
on the gravitating body. The gas is isothermal, and its velocity far upstream is
β cs (β > 1).
Indicated are the Mach angle θM and its
supplement, .
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.