Physics
Scientific paper
May 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agusm.p41b..06l&link_type=abstract
American Geophysical Union, Fall Meeting 2007, abstract #P41B-06
Physics
6200 Planetary Sciences: Solar System Objects, 6299 General Or Miscellaneous, 1626 Global Climate Models (3337, 4928), 1650 Solar Variability (7537)
Scientific paper
Based on a quantitative model, the planets are relatively loosely connected to the solar system. This was previously presented for the stability of the solar planetary system as a function of solar radiative and solar mass loss (Joint Assembly 2005). The model led to the prediction of the transition from water to ice about 3.6 billion years ago, in close agreement with experimental Mars explorations (AGU Fall meeting 2005). The model also revealed that the planetary orbits depend on the radii of their stellar parent, e.g., the Sun. The model assumes that stellar and solar radii are a function of the equilibrium between the stellar surface gravitational forces and intrasolar thermonuclear expansion forces. The model quantifies changes of planetary orbits, orbital periods, and planetary surface cooling and warming as a function of solar radius changes. The dependence on solar radius is super-linear. An increase of solar radius results in increasing planetary orbits, increasing orbital periods, and lowering of surface temperatures. At a critical solar radius, planets will separate from the solar system. The model shows that planetary orbits are highly sensitive to very small (<<1%) variations of solar radius. Solar radius and planetary orbit changes can be linked to the planetary global climate. This was evaluated for Earth. The model shows that relatively small decreases of solar radius can lead to significant increases of Earth global temperatures. These temperature increases are in addition and above to the much-studied greenhouse effects. Relatively small increases of solar radius can lead to significant lowering of Earth surface temperatures that may have been related to ages. The Earth global temperature is predicted to change at a rate of 0.29C per 0.001% solar radius change, and of 0.90C per 1.0E06 km (0.67%) orbital change. For the stability of planetary orbits as a function of solar radius, the model predicts that Pluto, Earth, and Mercury will separate from the solar system if the solar radius increases by 0.012, 0.47 percent, and 1.2 percent, respectively. A decrease of the solar radius by ten percent will contract the Earth radius to within a few percent of the solar surface. Changes of planetary orbits with solar radius in turn change planetary orbital periods. The Earth year is calculated to change by 1.14 days per 0.001% solar radius change. The model is universal and is anticipated extend generally to stellar planetary systems, and to galactic and intergalactic interactions. It is anticipated that the predicted changes can be monitored by modern experimental equipment.
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