Скачать или смотреть Resolving the Pioneer Anomaly: Thermal Recoil Force

The Pioneer anomaly, an unexplained, small, sunward acceleration observed on the Pioneer 10 and 11 spacecraft at large distances from the sun. The first source, a Wikipedia entry, summarizes the anomaly, detailing initial proposed explanations ranging from new physics to mundane causes, and concludes that the consensus explanation is now the anisotropic radiation pressure caused by the spacecraft's heat loss, or thermal recoil force. The second source, a paper by Turyshev et al., confirms the anomalous acceleration using extended Doppler data and finds that a model of temporally decaying acceleration provides a better fit than a constant one, supporting the thermal recoil force as the likely origin. The third paper by Bertolami et al. presents a thermal analysis methodology using point-like Lambertian sources, arguing that thermal effects from the radioisotope thermoelectric generators (RTGs) and main compartment are significant, estimating they could account for up to two-thirds of the measured anomaly.

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