The Pioneer Anomaly |
The Pioneer Anomaly |
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Rover Driver ![]() ![]() ![]() ![]() Group: Members Posts: 1015 Joined: 4-March 04 Member No.: 47 ![]() |
http://www.planetary.org/news/2005/pioneer_anomaly_faq.html
The planetary society may be checking it out... QUOTE The Planetary Society has committed to raise the funds to preserve the priceless Pioneer data from destruction.
After years of analysis, but without a final conclusion, NASA, astonishingly, gave up trying to solve the "Pioneer Anomaly" and provided no funds to analyze the data. The Pioneer data exists on a few hundred ancient 7- and 9-track magnetic tapes, which can only be read on "antique" outdated computers. The agency is going to scrap, literally demolish, the only computers able to access and process that data in the next few months! |
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#2
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Senior Member ![]() ![]() ![]() ![]() Group: Members Posts: 1870 Joined: 20-February 05 Member No.: 174 ![]() |
You know what the problem is with make-believe paranoia?
(looking around suspiciously...) YOU'RE PROBABLY RIGHT! |
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Guest_Richard Trigaux_* |
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#4
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![]() Senior Member ![]() ![]() ![]() ![]() Group: Members Posts: 2454 Joined: 8-July 05 From: NGC 5907 Member No.: 430 ![]() |
Astrophysics, abstract
astro-ph/0504367 From: Gary Page [view email] Date (v1): Sun, 17 Apr 2005 17:04:48 GMT (32kb) Date (revised v2): Sat, 1 Oct 2005 13:46:27 GMT (43kb) Utilizing Minor Planets to Assess the Gravitational Field in the Outer Solar System Authors: Gary L. Page, David S. Dixon, John F. Wallin Categories: astro-ph Comments: Added substantial new material dealing with ability to observed effects addressed in paper The twin Pioneer spacecraft have been tracked for over thirty years as they headed out of the solar system. After passing a heliocentric distance of 20 AU, both exhibited a systematic error in their trajectories that can be interpreted as a constant acceleration towards the sun and that has come to be known as the Pioneer Effect. Spacecraft systematics are its most likely explanation, but there have been no convincing arguments that that is the case. The alternative, that the Pioneer Effect represents a real phenomenon, is very appealing for many reasons. What is lacking is a means of measuring the effect, its variation, its potential anisotropies, and its region of influence. We show that minor planets provide an observational vehicle for investigating the gravitational field in the outer solar system, and thus provide a means of measuring the Pioneer Effect and potentially to either support or refute its existence as a real phenomenon. Minor planets can be used for this purpose because they have a large mass and are large and bright enough to be observed for useful intervals. Thus, even if the Pioneer Effect does not represent a new physical phenomenon, minor planets can be used to probe the gravitational field in the outer solar system. Since there are very few intermediate range tests of gravity at the multiple AU distance scale, this is a worthwhile endeavor in its own right. It might even be possible to differentiate between the predictions of alternative explanations for the Pioneer Effect. http://arxiv.org/abs/astro-ph/0504367 -------------------- "After having some business dealings with men, I am occasionally chagrined,
and feel as if I had done some wrong, and it is hard to forget the ugly circumstance. I see that such intercourse long continued would make one thoroughly prosaic, hard, and coarse. But the longest intercourse with Nature, though in her rudest moods, does not thus harden and make coarse. A hard, sensible man whom we liken to a rock is indeed much harder than a rock. From hard, coarse, insensible men with whom I have no sympathy, I go to commune with the rocks, whose hearts are comparatively soft." - Henry David Thoreau, November 15, 1853 |
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#5
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![]() Senior Member ![]() ![]() ![]() ![]() Group: Members Posts: 2454 Joined: 8-July 05 From: NGC 5907 Member No.: 430 ![]() |
Paper: astro-ph/0506281
replaced with revised version Mon, 24 Oct 2005 20:43:50 GMT (41kb) Title: Analytic Gravitational-Force Calculations for Models of the Kuiper Belt, with Application to the Pioneer Anomaly Authors: Michael Martin Nieto Comments: 11 pages, 8 figures, final corrections for publication Report-no: LA-UR-05-4414 Journal-ref: Phys. Rev D 72 (2005) 083004 We use analytic techniques to study the gravitational force that would be produced by different Kuiper-Belt mass distributions. In particular, we study the 3-dimensional rings (and wedge) whose densities vary as the inverse of the distance, as a constant, as the inverse-squared of the distance, as well as that which varies according to the Boss-Peale model. These analytic calculations yield physical insight into the physics of the problem. They also verify that physically viable models of this type can produce neither the magnitude nor the constancy of the Pioneer anomaly. \\ ( http://arXiv.org/abs/astro-ph/0506281 , 41kb) -------------------- "After having some business dealings with men, I am occasionally chagrined,
and feel as if I had done some wrong, and it is hard to forget the ugly circumstance. I see that such intercourse long continued would make one thoroughly prosaic, hard, and coarse. But the longest intercourse with Nature, though in her rudest moods, does not thus harden and make coarse. A hard, sensible man whom we liken to a rock is indeed much harder than a rock. From hard, coarse, insensible men with whom I have no sympathy, I go to commune with the rocks, whose hearts are comparatively soft." - Henry David Thoreau, November 15, 1853 |
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