Astronomy and Astrophysics – Astronomy
Scientific paper
May 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996mnras.280..115l&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 280, Issue 1, pp. 115-129.
Astronomy and Astrophysics
Astronomy
1
Hydrodynamics, Shock Waves, Supernova Remnants
Scientific paper
Steady-state Hα profiles from strong non-radiative shocks have been investigated in terms of the velocity distribution of the neutral gas by Lim & Raga. The authors' use of a one-dimensional distribution function, which describes only the neutral velocities in the direction normal to the plane of the shock front, limits the predicted line profiles to the line of sight in the direction of the flow. The steady-state model is here extended to a multidimensional distribution function which follows the thermalization of the atomic hydrogen in three dimensions. From this velocity structure it is possible to calculate the steady-state Hα emission profile seen by an observer with an arbitrary line-of-sight orientation to the shock velocity vector. The ionic shock structures used in the kinetic calculation are still of a plane-parallel nature. The predicted Hα profiles from the higher dimensional model follow the same trend of decreasing broad-to-narrow component ratio with increasing shock speed as those of the plane-parallel model. The effect of a variation of the line-of-sight angle from the normal is to reduce the velocity shift between the broad and narrow components in the line profile. Rotation around the shock normal has no effect upon the observed emission profile, as would be expected for a planar shock front.
No associations
LandOfFree
A distribution function calculation of the Hα profiles of high-velocity shocks - III. Profiles from varying angles of observation 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 A distribution function calculation of the Hα profiles of high-velocity shocks - III. Profiles from varying angles of observation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A distribution function calculation of the Hα profiles of high-velocity shocks - III. Profiles from varying angles of observation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1418816