The Solar Test of the Equivalence Principle
نویسندگان
چکیده
The Earth, Mars, Sun, Jupiter system allows for a sensitive test of the strong equivalence principle (SEP) which is qualitatively different from that provided by Lunar Laser Ranging. Using analytic and numerical methods we demonstrate that Earth-Mars ranging can provide a useful estimate of the SEP parameter η. Two estimates of the predicted accuracy are derived and quoted, one based on conventional covariance analysis, and another (called “modified worst case” analysis) which assumes that systematic errors dominate the experiment. If future Mars missions provide ranging measurements with an accuracy of σ meters, after ten years of ranging the expected accuracy for the SEP parameter η will be of order (1 − 12) × 10σ. These ranging measurements will also provide the most accurate determination of the mass of Jupiter, independent of the SEP effect test. Subject headings: celestial mechanics, stellar dynamics – gravitation – Earth – planets and satellites: Mars – dark matter
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