v 3 3 D ec 1 99 8 Comment on “ Indication , from Pioneer 10 / 11 , Galileo and Ulysses Data , of an Apparent Anomalous , Weak , Long - Range Acceleration ”

Comment on “Indication, from Pioneer 10/11, Galileo and Ulysses Data, of an Apparent Anomalous, Weak, Long-Range Acceleration”

A Prosaic Explanation for the Anomalous Accelerations Seen in Distant Spacecraft

Anderson, et al. have recently reported the discovery of an apparent anomalous, weak, long-range acceleration in the Pioneer 10/11 and Ulysses spacecraft. I believe that this result can be explained by non-isotropic radiative cooling of the spacecraft electronics through passive radiators on the spacecraft surface. These radiators are preferentially placed on the anti-solar side of the spacecra...

The Pioneer anomalous acceleration: can we measure the cosmological constant at the scale of the solar system ?

An anomalous constant acceleration of (8.7 ± 1.3) × 10−8 cm.s−2 directed toward the Sun has been discovered by Anderson et al. in the motion of the Pioneer 10/11 and Galileo spacecrafts. In parallel, the WMAP results have definitively established the existence of a cosmological constant Λ = 1/LU , and therefore of an invariant cosmic length-scale LU = (2.72 ± 0.10) Gpc. We show that the existen...

ar X iv : g r - qc / 0 10 40 64 v 5 1 0 M ar 2 00 5 Study of the anomalous acceleration of Pioneer 10 and 11

Our previous analyses of radio Doppler and ranging data from distant spacecraft in the solar system indicated that an apparent anomalous acceleration is acting on Pioneer 10 and 11, with a magnitude aP ∼ 8× 10 −8 cm/s, directed towards the Sun. Much effort has been expended looking for possible systematic origins of the residuals, but none has been found. A detailed investigation of effects bot...

Study of the anomalous acceleration of Pioneer 10 and 11

Our previous analyses of radio Doppler and ranging data from distant spacecraft in the solar system indicated that an apparent anomalous acceleration is acting on Pioneer 10 and 11, with a magnitude aP ∼ 8× 10 −8 cm/s, directed towards the Sun [7, 8]. Much effort has been expended looking for possible systematic origins of the residuals, but none has been found. A detailed investigation of effe...