Physics
Scientific paper
Jul 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990nascp3084..177b&link_type=abstract
In NASA, Ames Research Center, The Interstellar Medium in External Galaxies: Summaries of Contributed Papers p 177-179 (SEE N91-
Physics
Absorption Spectra, Conductive Heat Transfer, Cosmic Gases, Disk Galaxies, Galaxies, High Temperature Gases, Interstellar Matter, Detection, Evaporation, Magnetic Fields, Observatories, Position (Location), Steady State, Time Dependence
Scientific paper
The discovery of the O VI interstellar absorption lines in our Galaxy by the Copernicus observatory was a turning point in our understanding of the Interstellar Medium (ISM). It implied the presence of widespread hot (approx. 10 to the 6th power K) gas in disk galaxies. The detection of highly ionized species in quasi-stellar objects' absorption spectra may be the first indirect observation of this hot phase in external disk galaxies. Previous efforts to understand extensive O VI absorption line data from our Galaxy were not very successful in locating the regions where this absorption originates. The location at interfaces between evaporating ISM clouds and hot gas was favored, but recent studies of steady-state conduction fronts in spherical clouds by Ballet, Arnaud, and Rothenflug (1986) and Bohringer and Hartquist (1987) rejected evaporative fronts as the absorption sites. Researchers report here on time-dependent nonequilibrium calculations of planar conductive fronts whose properties match well with observations, and suggest reasons for the difference between the researchers' results and the above. They included magnetic fields in additional models, not reported here, and the conclusions are not affected by their presence.
Balbus Steven A.
Borkowski Kazimierz J.
Fristrom Carl Chandler
No associations
LandOfFree
Radiative thermal conduction fronts 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 Radiative thermal conduction fronts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radiative thermal conduction fronts will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1095944