Publication
Title
Spherically symmetric, polytropic flow
Author
Abstract
We determine, in closed form, the flow profile corresponding to stationary, spherically symmetric, polytropic flow around a gravitating and radiating point mass. The profile is a branch of a quartic equation, relating distance to the central object to, for example, the local sound speed. Two branches of this equation are complex. The other two describe three different types of flow: subsonic and transonic accretion flow, transonic wind, and supersonic, super-Eddington flow. At any position in this flow, a supersonic regime may be linked to a subsonic one, through an adiabatic shock. Given the profiles, we determine the position of this shock, and vice versa. We also derive a stability criterion for the continuous and shocked flows.
Language
English
Source (journal)
The astrophysical journal. - Chicago, Ill., 1895, currens
Publication
Chicago, Ill. : 1992
ISSN
0004-637X [print]
1538-4357 [online]
Volume/pages
384:2,1(1992), p. 587-604
ISI
A1992GY75800021
Full text (Publisher's DOI)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 08.10.2008
Last edited 21.11.2017
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