Particle Acceleration in Galactic Winds

Autor(en)

Ernst Dorfi

Abstrakt

Galactic winds are driven by pressure gradients of the thermal gas, the energetic particles and the magnetic waves. In the case of time-dependent inner boundary conditions (e.g. super bubbles, star burst regions) shock waves are generated within the wind thereby also re-accelerating the cosmic rays and modifying the flow structure. The physical model is described by a set of non-linear partial differential equations which is solved in flux-tube geometry by an implicit adaptive numerical scheme allowing an accurate treatment of moving discontinuities inside the flow. Numerical features of the method as well as properties of the physical solutions will be discussed.

Organisation(en)

Institut für Astrophysik

Seiten

71

Publikationsdatum

2006

ÖFOS 2012

103003 Astronomie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/1a82ebdb-2c12-4f29-a9b0-38d34d0c420b