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Old December 24th 07 posted to sci.physics.relativity, sci.physics
Eric Gisse
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Posts: 18,191
Default Pioneer Anomaly is GR Time Dilation?

On Dec 24, 7:07 am, Roland PJ wrote:
The Pioneer Spacecraft have shown an anomalous acceleration towards the
Sun of ~8 x 10^-16 m/s^2.

Pioneer 10 and Pioneer 11 were traveling at about 1.22 x 10^4 m/s and
1.16 x 10^4 m/s away from the Sun at the end of their lifetimes.

Now, the Pioneers will have experienced time dilation in the correct
direction (blue-shift for us on earth) as they escape the gravitational
well of the Sun, as follows:

We will use Swarzschild time dilation, dt_shell = (1-2M/r)^1/2 dt, where
dt_shell is shell time (i.e. use on earth, or Pioneer's electronics),
and dt is ephemeris time (bookkeeper time) valid at a great distance.


....and your justification for this is what, exactly?

Remember what the Schwarzschild solution describes.

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