Journal ArticleDOI
Hot gas in and between galaxies
TLDR
In this article, the fate of interstellar gas heated by energetic radiation and far from the galactic plane is considered, and it is shown that for plausible heating rates a very hot corona forms, separated from the cooler gas in the disk by a conductive boundary layer.Abstract:
The fate of interstellar gas heated by energetic radiation and far from the galactic plane is considered. It is shown that for plausible heating rates a very hot corona forms, separated from the cooler gas in the disk by a conductive boundary layer. For heating rates exceeding a critical value a galactic wind is set up, as first shown by Mathews and Baker for elliptical galaxies. Such winds may fill the intracluster space in clusters of galaxies; further heating may drive a cluster wind, as shown by Yahil and Ostriker. It is believed that the flow problem of intracluster gas in the presence of intercluster gas is not yet adequately solved. A variety of observations at X-ray and ultraviolet wavelengths are needed to resolve these questions.read more
Citations
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The dynamical state of the interstellar gas and fields. VII.
TL;DR: In this article, the authors discuss the attractive and disruptive forces in conversion of interstellar gas into stars, discussing self gravitation, galactic magnetic field and cosmic ray pressure, as well as the effects of star formation.
Journal ArticleDOI
Evolution of the ISM of starburst galaxies: The SN heating efficiency
TL;DR: In this article, a simple semi-analytic model was proposed to trace the thermalisation history of the starburst galaxy and determine the heating efficiency of the supernova explosion (SNE).
Journal ArticleDOI
Spectroscopy from Laser-produced Plasmas at Flare Temperatures
TL;DR: In this article, a discussion of laboratory spectra similar in temperatures and ion abundances to solar flare spectra is given, and some of the results are used to identify lines in the high temperature solar flare spectrum in the 100 A region and in the 1000 A region.
Journal ArticleDOI
Contributions to the theory of spiral structure. II. The density wave theory and the very hot interstellar gas component
M. Reinhardt,Th. Schmidt-Kaler +1 more
TL;DR: In this article, the authors developed a cyclic model, in which an interstellar gas of a temperature around 104 K is heated to roughly 106 K by type II supernovae resulting from the enhanced star formation triggered by the density wave, and cools down again to 104 K after the supernova activity subsides to be ready for shock compression in the next sweep of density wave pattern.
References
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The dynamical state of the interstellar gas and fields. VII.
TL;DR: In this article, the authors discuss the attractive and disruptive forces in conversion of interstellar gas into stars, discussing self gravitation, galactic magnetic field and cosmic ray pressure, as well as the effects of star formation.
Journal ArticleDOI
Large-scale effects of supernova remnants on the Galaxy - Generation and maintenance of a hot network of tunnels
Donald P. Cox,Barham W. Smith +1 more
TL;DR: In this paper, it was shown that a supernova rate on the order of 1 per 50 years in the gaseous disk of our Galaxy is sufficient to generate and maintain a mesh of interconnected tunnels containing very low-density gas.