Galileo Gravity Results and the Internal Structure of Io
作者： J. D. Anderson , W. L. Sjogren , G. Schubert
DOI: 10.1126/SCIENCE.272.5262.709
关键词:
摘要: Doppler data generated with the Galileo spacecraft9s radio carrier wave were used to measure Io9s external gravitational field. The resulting triaxial field is consistent assumption that Io in tidal and rotational equilibrium. inescapable conclusion it has a large metallic core. If core eutectic mixture of iron sulfide, comprises 20.2 ± 7.4 percent satellite9s total mass radius about 52 mean 1821.3 kilometers; if pure iron, 10.5 3.7 36 radius.
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E. Richard Cohen, Barry N. Taylor, The 1986 adjustment of the fundamental physical constants Reviews of Modern Physics. ,vol. 59, pp. 1121- 1148 ,(1987) , 10.1103/REVMODPHYS.59.1121
Stanley F. Dermott, Tidal Dissipation in the Solid Cores of the Major Planets Icarus. ,vol. 37, pp. 310- 321 ,(1979) , 10.1016/0019-1035(79)90137-4
G. W. Null, J. D. Anderson, S. K. Wong, Gravity field of Jupiter from Pioneer 11 tracking data Science. ,vol. 188, pp. 476- 477 ,(1975) , 10.1126/SCIENCE.188.4187.476
G. W. Null, Gravity field of Jupiter and its satellite from Pioneer 10 and Pioneer 11 tracking data The Astronomical Journal. ,vol. 81, pp. 1153- 1161 ,(1976) , 10.1086/111999
T. V. Johnson, C. M. Yeates, R. Young, Space Science Reviews Volume on Galileo Mission Overview Space Science Reviews. ,vol. 60, pp. 3- 21 ,(1992) , 10.1007/978-94-011-2512-3_1
Richard Woo, J. W. Armstrong, Spacecraft radio scattering observations of the power spectrum of electron density fluctuations in the solar wind Journal of Geophysical Research. ,vol. 84, pp. 7288- 7296 ,(1979) , 10.1029/JA084IA12P07288
M. Segatz, T. Spohn, M.N. Ross, G. Schubert, Tidal dissipation, surface heat flow, and figure of viscoelastic models of Io Icarus. ,vol. 75, pp. 187- 206 ,(1988) , 10.1016/0019-1035(88)90001-2
V.N. Zharkov, V.V. Leontjev, A.V. Kozenko, Models, figures, and gravitational moments of the Galilean satellites of Jupiter and icy satellites of Saturn Icarus. ,vol. 61, pp. 92- 100 ,(1985) , 10.1016/0019-1035(85)90157-5
J. D. Anderson, J. W. Armstrong, J. K. Campbell, F. B. Estabrook, T. P. Krisher, E. L. Lau, Gravitation and Celestial Mechanics Investigations with Galileo Space Science Reviews. ,vol. 60, pp. 591- 610 ,(1992) , 10.1007/978-94-011-2512-3_22
J. K. Campbell, S. P. Synnott, Gravity Field of the Jovian System from Pioneer and Voyager Tracking Data Reports of Planetary Geology and Geophysics Program. pp. 152- 154 ,(1985)