Pioneer Anomaly 2017

Il giorno venerdì 9 giugno 2017 13:26:53 UTC+2, Craig Markwardt ha scritto:
On Friday, June 9, 2017 at 5:40:00 AM UTC-4, wrote:
..but i try again to understand : on the beginning , without the suspected anomaly , they observed like a deceleration of their ground clocks .. but the ground and in-rocket cloks were good .. is it so the history ? ... or like the rocket was sending a frequency , but this frequency was lower than the waited-one ... is it so ?

Actually it's possible to see what navigators and analysts were thinking about at the time because they wrote about their concerns regularly and published it in a journal. It's called the DSN Progress Report, and all of the issues are online dating back to 1971 (just google for the term). They were thinking about clocks, yes, but also anything else that could bias the signal. Gas leaks in the propulsion system was a big concern, and were known to be active at some times early in the mission. Modeling of solar radiation pressure was a big deal and analysts were perfecting the process, but there was always the concern about the change in optical properties of the spacecraft coatings (darkening of white coatings), etc.

CM

... you are almost sympatic ( kind , in other words?).. because you try to meet people and opinions ..
... i put the final(?) anwear in other way : if some phenomena should make lower the frequencies sent in the spatial vacuum , could that phenomena explain our misterious anomaly ?