Two-fluid models of cosmic-ray modified radiative shocks including the effects of an acoustic instability

Astronomy and Astrophysics – Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

4

Shock Waves, Ism: Cosmic Rays, Hydrodynamics, Instabilities, Ism: Supernova Remnants

Scientific paper

Aims:We extend the study of two-fluid models of cosmic-ray modified radiative shocks by including energy transfer from the cosmic rays to the thermal gas due to a cosmic-ray driven acoustic instability. Methods: We perform hydrodynamic simulations to find solutions to the time-dependent, one-dimensional two-fluid equations governing the thermal fluid and cosmic-ray fluid. Source terms transferring energy between the two fluids are included. Results: The magnitudes of the source terms determine the degree to which the cosmic rays modify the radiative shock. We found a range of steady solutions characterised by moderate cosmic-ray acceleration and a compression ratio significantly greater than 7, which is the limit for cosmic-ray dominated shocks. The post-shock temperature and overall compression increase as the source term in the thermal fluid's energy equation increases. For sufficiently strong coupling, the solutions are thermally overstable.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Two-fluid models of cosmic-ray modified radiative shocks including the effects of an acoustic instability does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Two-fluid models of cosmic-ray modified radiative shocks including the effects of an acoustic instability, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two-fluid models of cosmic-ray modified radiative shocks including the effects of an acoustic instability will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-734028

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.