콜로퀴움
Supernova Driven Turbulence in the Interstellar Medium 2007-03-07
- Speaker : Dr. Sami Dib (KASI)
- Date : 2007-03-07 16:00 ~ 17:00
In galactic disks, the one dimensional velocity dispersion of <br />
interstellar gas is observed to vary between 12-15 km/s in the central<br />
parts down to 4-6 km/s in the outer regions. Many physical mechanisms <br />
are responsible for generating interstellar turbulence. A prominent one is related to energy feedback from stars particularly in the form of supernova explosions. In this talk, I shall review a number of those mechanisms and using three-dimensional numerical simulations assess the contribution of stellar feedback in the form of supernova explosions to the observed levels of interstellar turbulence at different radii in galactic disks.
interstellar gas is observed to vary between 12-15 km/s in the central<br />
parts down to 4-6 km/s in the outer regions. Many physical mechanisms <br />
are responsible for generating interstellar turbulence. A prominent one is related to energy feedback from stars particularly in the form of supernova explosions. In this talk, I shall review a number of those mechanisms and using three-dimensional numerical simulations assess the contribution of stellar feedback in the form of supernova explosions to the observed levels of interstellar turbulence at different radii in galactic disks.