The Stability of an Isothermal Gaseous Sphere with Gravitation Full article
| Journal |
Astronomy Reports
ISSN: 1063-7729 , E-ISSN: 1562-6881 |
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| Output data | Year: 2011, Volume: 55, Number: 3, Pages: 214-223 Pages count : 10 DOI: 10.1134/S1063772911020077 | ||||
| Tags | Dispersion Relation; Astronomy Report ; Convective Instability; Gravitational Instability; Approximation Viscosity | ||||
| Authors |
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| Affiliations |
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Funding (2)
| 1 | Siberian Branch of the Russian Academy of Sciences | 26 |
| 2 | Президиум РАН |
Abstract:
A dispersion relation has been obtained for waves propagating in an inhomogeneous gas with viscosity and gravity in the direction of the density gradient. It has been shown that a stationary distribution of isothermal gas is unstable under gravitational—convective perturbations. It is suggested that the initialand boundary-value problems of the non-stationary dynamics of an isothermal gas with gravity but without viscosity are incorrect and require regularization, for example, by adding viscosity. The presence of viscosity does not prevent the development of the Jeans long-wave instability. Numerical experiments based on a fully three-dimensional, non-stationary numerical code have demonstrated the development of a collapse inside an isothermal cloud.
Cite:
Snytnikov V.N.
, Stadnichenko O.A.
The Stability of an Isothermal Gaseous Sphere with Gravitation
Astronomy Reports. 2011. V.55. N3. P.214-223. DOI: 10.1134/S1063772911020077 WOS Scopus РИНЦ OpenAlex
The Stability of an Isothermal Gaseous Sphere with Gravitation
Astronomy Reports. 2011. V.55. N3. P.214-223. DOI: 10.1134/S1063772911020077 WOS Scopus РИНЦ OpenAlex
Original:
Снытников В.Н.
, Стадниченко О.А.
К вопросу об устойчивости изотермического газового шара с гравитацией
Астрономический журнал. 2011. Т.88. №3. С.240-249. РИНЦ
К вопросу об устойчивости изотермического газового шара с гравитацией
Астрономический журнал. 2011. Т.88. №3. С.240-249. РИНЦ
Dates:
| Submitted: | May 12, 2010 |
| Accepted: | Jul 1, 2010 |
| Published print: | Mar 1, 2011 |
| Published online: | Mar 19, 2011 |
Identifiers:
| Web of science: | WOS:000289521200004 |
| Scopus: | 2-s2.0-79952809140 |
| Elibrary: | 16997527 |
| OpenAlex: | W2012802220 |