The Pioneer Anomaly: The Data, its Meaning, and a Future Test

Details The Pioneer Anomaly: The Data, its Meaning, and a Future Test The Pioneer Anomaly: The Data, its Meaning, and a Future Test

2004-11-15

arxiv.org/abs/gr-qc/0411077v2

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

16 pages, 7 figures, to be published in the AIP Conference Proceedings of the 2nd Mexican Meeting on Mathematical and Experime

Scientific paper

10.1063/1.1900511

The radio-metric Doppler tracking data from the Pioneer 10/11 spacecraft, from between 20-70 AU, yields an unambiguous and independently confirmed anomalous blue shift drift of a_t = (2.92 \pm 0.44)\times 10^{-18} s/s^2. It can be interpreted as being due to a constant acceleration of a_P = (8.74 \pm 1.33) \times 10^{-8} cm/s^2 directed towards the Sun. No systematic effect has been able to explain the anomaly, even though such an origin is an obvious candidate. We discuss what has been learned (and what might still be learned) from the data about the anomaly, its origin, and the mission design characteristics that would be needed to test it. Future mission options are proposed.

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