Estimation of the characteristic time of existence of planet atmospheres

Details Estimation of the characteristic time of existence of planet atmospheres Estimation of the characteristic time of existence of planet atmospheres

Oct 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mvsfa..32...97p&link_type=abstract

Moskovskii Universitet, Vestnik, Seriia 3 - Fizika, Astronomiia (ISSN 0579-9392), vol. 32, Sept.-Oct. 1991, p. 97-100. In Russia

Other

Gas Dynamics, Gravitational Fields, Hydrodynamic Equations, Planetary Atmospheres, Planetary Evolution, Planetary Gravitation, Atmospheric Temperature, Isothermal Processes

Scientific paper

An equation is presented for the nonstationary (in the general case) motion of a gas in a spherically symmetric gravitational field. A solution corresponding to the steady-state radial flow of the medium is analyzed. It is shown that the characteristic time of existence of a planet atmosphere depends exponentially on a parameter determined by the ratio of the product of gravity acceleration and planet radius to the temperature of the atmosphere.

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