Abstract

TEJEDA, Emilio. Incompressible wind accretion. Rev. mex. astron. astrofis [online]. 2018, vol.54, n.1. ISSN 0185-1101.

We present a simple, analytic model of an incompressible fluid accreting onto a moving gravitating object. This solution allows us to probe the highly subsonic regime of wind accretion. Moreover, it corresponds to the Newtonian limit of a previously known relativistic model of a stiff fluid accreting onto a black hole. Besides filling this blank in the literature, the new solution should be useful as a benchmark test for numerical hydrodynamics codes. Given its simplicity, it can also be used as an illustrative example in a gas dynamics course.

Keywords : hydrodynamics; methods: analytical; stars: winds; outflows.

        · abstract in Spanish     · text in English     · English ( pdf )