Pioneer 10 Doppler data analysis: disentangling periodic and secular anomalies
| Autor: | Levy, A., Christophe, B., Berio, P., Metris, G., Courty, J-M., Reynaud, S. |
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| Rok vydání: | 2008 |
| Předmět: | |
| Zdroj: | Advances in Space Research 43 (2009) 1538-1544 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1016/j.asr.2009.01.003 |
| Popis: | This paper reports the results of an analysis of the Doppler tracking data of Pioneer probes which did show an anomalous behaviour. A software has been developed for the sake of performing a data analysis as independent as possible from that of J. Anderson et al. \citep{anderson}, using the same data set. A first output of this new analysis is a confirmation of the existence of a secular anomaly with an amplitude about 0.8 nms$^{-2}$ compatible with that reported by Anderson et al. A second output is the study of periodic variations of the anomaly, which we characterize as functions of the azimuthal angle $\varphi$ defined by the directions Sun-Earth Antenna and Sun-Pioneer. An improved fit is obtained with periodic variations written as the sum of a secular acceleration and two sinusoids of the angles $\varphi$ and $2\varphi$. The tests which have been performed for assessing the robustness of these results are presented. Comment: 13 pages, 6 figures, minor amendments |
| Databáze: | arXiv |
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