Statistics – Computation
Scientific paper
Feb 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990ap%26ss.164..193i&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 164, no. 2, Feb. 1990, p. 193-211. Research supported by the Universidad d
Statistics
Computation
7
Computational Astrophysics, Hydrogen Plasma, Plasma Radiation, Sound Waves, Wave Propagation, H Ii Regions, Planetary Nebulae, Plasma Equilibrium, Quasars, Wave Amplification
Scientific paper
The thermal equilibrium of a hydrogen plasma heated and ionized by an external radiation field, diluted by a factor W and defined by an effective temperature T, is studied. In addition, the problem of propagation of acoustic and thermal waves in the above plasma model is also analyzed. It is found that an external radiation field has stabilizing effects against wave amplification. From the dispersion relation obtined, the phase velocity for sound and thermal waves, and their respective scale-length of damping (or anti-damping), sound wave dimensionless scale length is calculated as a function of the frequency omega for representative values of the plasma temperature and the external radiation field T.
Ibanez Miguel H. S.
Mendoza Cesar A. B.
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