Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978azh....55..683s&link_type=abstract
(Astronomicheskii Zhurnal, vol. 55, July-Aug. 1978, p. 683-691.) Soviet Astronomy, vol. 22, July-Aug. 1978, p. 391-395. Transla
Astronomy and Astrophysics
Astronomy
2
Galactic Structure, Halos, High Temperature Plasmas, Interstellar Gas, Plasma Dynamics, Astronomical Models, Energy Dissipation, Galactic Evolution, Nonthermal Radiation, Plasma Waves
Scientific paper
The galactic halo is regarded as a hot spherical plasma medium. From the plasma equations, dispersion relations are derived for the transverse and associated waves. In general, plasma oscillations will not be damped in the halo, although damping can occur near the center if streams of ionized particles are present. Since plasma-wave damping would be a very effective heat source, the inner part of the halo gradually ought to lose heat, both because damping is absent and by thermal or nonthermal radiation. In this event, according to Spitzer, mass would leave the halo and flow down into the inner part of the Galaxy. This process could replenish the substantial mass loss experienced by the galactic nucleus. Expressions are also obtained for the phase velocity of the plasma waves. For a material plasma wave the phase velocity will exceed the escape velocity, implying that some agent other than gravitation, such as a magnetic field, counteracts the tendency of the ionized gas to escape.
Bandyopadhyay Kalpana
Bondyopadhyay R.
Saha Goutam
No associations
LandOfFree
A study of the hot galactic halo 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 study of the hot galactic halo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A study of the hot galactic halo will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-944111