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Title:
The Apparent Anomalous, Weak, Long-Range Acceleration of Pioneer 10 and 11
Authors:
Turyshev, Slava G.; Anderson, John D.; Laing, Philip A.; Lau, Eunice L.; Liu, Anthony S.; Nieto, Michael Martin
Publication:
eprint arXiv:gr-qc/9903024
Publication Date:
03/1999
Origin:
ARXIV
Keywords:
General Relativity and Quantum Cosmology, Astrophysics
Comment:
Latex, 7 pages and 2 figures. Invited talk at the XXXIV-th Rencontres de Moriond Meeting on Gravitational Waves and Experimental Gravity. Les Arcs, Savoi, France (January 23-30,1999). Corrected typos; "Gravitational Waves and Experimental Gravity", (2000) 481-486
Bibliographic Code:
1999gr.qc.....3024T

Abstract

Recently we reported that radio Doppler data generated by NASA's Deep Space Network (DSN) from the Pioneer 10 and 11 spacecraft indicate an apparent anomalous, constant, spacecraft acceleration with a magnitude $\sim 8.5\times 10^{-8}$ cm s$^{-2}$, directed towards the Sun (gr-qc/9808081). Analysis of similar Doppler and ranging data from the Galileo and Ulysses spacecraft yielded ambiguous results for the anomalous acceleration, but it was useful in that it ruled out the possibility of a systematic error in the DSN Doppler system that could easily have been mistaken as a spacecraft acceleration. Here we present some new results, including a critique suggestions that the anomalous acceleration could be caused by collimated thermal emission. Based partially on a further data for the Pioneer 10 orbit determination, the data now spans January 1987 to July 1998, our best estimate of the average Pioneer 10 acceleration directed towards the Sun is $\sim 7.5 \times 10^{-8}$ cm s$^{-2}$.
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arXiv e-prints