Starburst Driven Galactic Winds
Abstract
From observational fact it is evident that cosmic rays leave a galaxy and this additional energy flux can be used to drive an outflow if the thermal gas is coupled to these streaming particles, e.g. momentum transfer provided by the resonant excitations of magneto hydrodynamic waves (Breitschwerdt et al. 1991). Since the hot gas is produced by stellar winds and supernova explosions and the bulk of cosmic rays is accelerated by shock waves generated by supernova remnants, the galactic wind is coupled to the star formation rate and the supernova rate. Models of starbursts are calculated with STARBURST99 (Leitherer et al. 1999) and these models are used as inner boundary conditions of galactic wind solutions. The calculations are obtained with the Vienna hydrodynamic code and the solutions are discussed in the context of observations of nearby starburst galaxies like M 82 and NGC 253.
- Publication:
-
Hvar Observatory Bulletin
- Pub Date:
- 2002
- Bibcode:
- 2002HvaOB..26...73D
- Keywords:
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- galactic winds;
- starburst;
- modelling