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Title:
Gravitational instability - The second approximation in the linear long-wave theory
Authors:
ZELDOVICH, IA. B.
Affiliation:
AA(Akademiia Nauk SSSR, Institut Prikladnoi Matematiki, Moscow, USSR)
Journal:
(Astronomicheskii Zhurnal, vol. 59, July-Aug. 1982, p. 636-638) Soviet Astronomy (ISSN 0038-5301), vol. 26, July-Aug. 1982, p. 389, 390. Translation.
Publication Date:
08/1982
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
GRAVITATIONAL COLLAPSE, JEANS THEORY, PERTURBATION THEORY, GREEN'S FUNCTIONS, PRESSURE GRADIENTS, STEADY STATE
Bibliographic Code:
1982SvA....59..636Z

Abstract

An analytic expression is given to describe the growing mode in the linear gravitational-instability theory. This expression takes into account the pressure gradient arising in a medium with density perturbations: the gradient introduces a small correction for wavelengths in excess of the critical Jeans value. 
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