On the LenseThirring test with the Mars Global Surveyor in the gravitational field of Mars
Abstract
I discuss some aspects of a recent framedragging test performed by exploiting the RootMeanSquare (RMS) orbitoverlap differences of the outofplane component ( N) of the Mars Global Surveyor (MGS) spacecraft’s orbit in the gravitational field of Mars. A linear fit to the complete time series for the entire MGS data set (4 February 199914 January 2005) yields a normalized slope 1.03 ± 0.41 (with 95% confidence bounds). Other linear fits to different data sets confirm agreement with general relativity. Huge systematic effects induced by mismodeling the martian gravitational field which have been claimed by some authors are absent in the MGS outofplane record. The same level of effect is seen for both the classical nongravitational and relativistic gravitomagnetic forces on the inplane MGS orbital components; this is not the case for the outofplane components. Moreover, the nonconservative forces experience highfrequency variations which are not important in the present case where secular effects are relevant.
 Publication:

Central European Journal of Physics
 Pub Date:
 June 2010
 DOI:
 10.2478/s1153400901176
 arXiv:
 arXiv:grqc/0701146
 Bibcode:
 2010CEJPh...8..509I
 Keywords:

 experimental studies of gravity;
 experimental tests of gravitational theories;
 lunar;
 planetary;
 and deepspace probes;
 Mars;
 General Relativity and Quantum Cosmology;
 Astrophysics;
 High Energy Physics  Phenomenology;
 Physics  Geophysics;
 Physics  Space Physics
 EPrint:
 LaTex2e, 8 pages, no figures, no tables, 17 references. It refers to K. Krogh, Class. Quantum Grav., 24, 57095715, 2007 based on astroph/0701653. Final version to appear in CEJP (Central European Journal of Physics)