From: LARRY KLAES (ljk4_at_msn.com)
Date: Wed Sep 21 2005 - 14:43:31 UTC
>From: "Larry Kellogg" <larry.kellogg_at_sbcglobal.net>
>To: <lunar-update_at_news.altair.com>
>Subject: [lunar-update] Study of the anomalous acceleration of Pioneer
>10and 11
>Date: Tue, 20 Sep 2005 16:44:44 -0700
>
>Good day again,
>
>Dr. Slava G. Turyshev, one of the scientists doing a study of the anomalous
>acceleration of Pioneer 10 and 11, is coming up to NASA Ames this Thursday
>to give a talk on the subject.
>
>Being no longer employed at Ames, I have had to ask for visitor passes to
>continue copying the Pioneer 10 and 11 Master Data Record (MDR) files so
>that I could put the whole mission raw data on DVDs.
>
>I have completed that task and Viktor Toth has written a "C++" program to
>read the science and engineering sub-com data and convert the binary data
>to
>analog values. This is the same data I had displayed with my LabVIEW
>programs earlier at Ames when we were still in communication with Pioneer
>10.
>http://spaceprojects.arc.nasa.gov/Space_Projects/pioneer/PNStat.html
>
>Dr. Turyshev thought that the information on the temperature history might
>be of use in their research and I have given him a set of the DVDS and
>Viktor has provided him with an MDR reader. (only 12 DVDs and you have both
>Pioneer 10 and 11 data from beginning to end. That is 30 years of data on
>my laptop. :-))
>
>As a result of talking with Dr. Turyshev I have been reading up on their
>work and trying to understand some of the material I have on the work of
>the
>DSN in tracking the Pioneers over the years. This has been like trying to
>learn a new language but I am learning a lot about the Pioneers.
>
>I suggested to Ames personnel that it might be nice if Dr. Turyshev's talk
>was streamed to the web but I have not heard if they will do so. (not being
>on base, I don't get to read the center e-mails either.)
>
>Even if you can't view the talk you might like to look at the links below.
>The 21 page pdf is a larger file but the presentation images are colorful.
>The 55 page pdf is a smaller file but much more reading (and re-reading).
>If you want to know what was checked and rechecked in their search for what
>might account for the apparent slowing of the Pioneers, this will show you.
>
>Sorry, with all my reading and driving over the hill to Ames, my posts to
>this lunar-update list have been spotty at best. (now know what a back
>yard
>and garden are too.)
>
>It would seem you folks have other irons in the fire too. The lunar-update
>list is now a 998 readers.
>
>Thanks for looking up with me.
>
>
>Larry Kellogg
>
>larry.kellogg at sbcglobal.net
>https://news.altair.com/mailman/listinfo/lunar-update
>http://kelloggserialreports.blogspot.com/
>http://lkellogg.vttoth.com/LarryRussellKellogg/
>http://www.nasa.gov/multimedia/nasatv/
>=======================================================
>http://www.slac.stanford.edu/econf/C041213/presents/0310_TLK.PDF
>21 page, 3 Mb PDF of Power Point Presentation on
>Study of the anomalous acceleration of Pioneer 10 and 11
>=======================================================
>http://arxiv.org/PS_cache/gr-qc/pdf/0104/0104064.pdf
>55 page, 1.5 Mb PDF of indepth coverage of
>Study of the anomalous acceleration of Pioneer 10 and 11
>=======================================================
>http://xxx.lanl.gov/abs/gr-qc/0104064
>http://arxiv.org/abs/gr-qc/0104064
>
>General Relativity and Quantum Cosmology, abstract
>gr-qc/0104064
>
>From: Slava G. Turyshev [view email]
>Date (v1): Thu, 19 Apr 2001 22:42:49 GMT (834kb)
>Date (revised v2): Tue, 15 May 2001 20:55:26 GMT (835kb)
>Date (revised v3): Tue, 5 Feb 2002 21:05:21 GMT (851kb)
>Date (revised v4): Thu, 11 Apr 2002 20:28:10 GMT (851kb)
>Date (revised v5): Thu, 10 Mar 2005 23:44:33 GMT (850kb)
>
>Study of the anomalous acceleration of Pioneer 10 and 11
>Authors: John D. Anderson, Philip A. Laing, Eunice L. Lau, Anthony S. Liu,
>Michael Martin Nieto, Slava G. Turyshev
>Categories: gr-qc astro-ph physics.space-ph
>Comments: Version 4, of 11 Apr. 2002, with errata appended
>Report-no: LA-UR-00-5654
>Subj-class: General Relativity and Quantum Cosmology; Space Physics
>Journal-ref: Phys.Rev. D65 (2002) 082004
>
> 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 a_P ~ 8 x
>10^{-8} cm/s^2, directed towards the Sun (anderson,moriond). Much effort
>has
>been expended looking for possible systematic origins of the residuals, but
>none has been found. A detailed investigation of effects both external to
>and internal to the spacecraft, as well as those due to modeling and
>computational techniques, is provided. We also discuss the methods,
>theoretical models, and experimental techniques used to detect and study
>small forces acting on interplanetary spacecraft. These include the methods
>of radio Doppler data collection, data editing, and data reduction.
> There is now further data for the Pioneer 10 orbit determination. The
>extended Pioneer 10 data set spans 3 January 1987 to 22 July 1998. [For
>Pioneer 11 the shorter span goes from 5 January 1987 to the time of loss of
>coherent data on 1 October 1990.] With these data sets and more detailed
>studies of all the systematics, we now give a result, of a_P = (8.74 +/-
>1.33) x 10^{-8} cm/s^2. (Annual/diurnal variations on top of a_P, that
>leave
>a_P unchanged, are also reported and discussed.)
>
>Full-text: PostScript, PDF, or Other formats
>http://arxiv.org/pdf/gr-qc/0104064
>
>References and citations for this submission:
>SLAC-SPIRES HEP (refers to , cited by, arXiv reformatted);
>CiteBase (autonomous citation navigation and analysis)
>
>
>
>
>=======================================================
>Thanks for looking up with me.
>- LRK -
>=======================================================
>
>WHAT THE MIND CAN CONCEIVE, AND BELIEVE, IT WILL
>ACHIEVE - LRK
>
>=======================================================
>
>This is the lunar-update at news.altair.com
>https://news.altair.com/mailman/listinfo/lunar-update
>mailing list!
>
>This list is a moderated list. The moderator is Larry
>Kellogg
>(larry.kellogg at sbcglobal.net
>https://news.altair.com/mailman/listinfo/lunar-update
>Please send suggestions for postings directly to
>Larry.
>
>Larry's blog site, is:
>http://kelloggserialreports.blogspot.com/
>
>General information about the mailing list is at:
>https://news.altair.com/mailman/listinfo/lunar-update
>
>=======================================================
>end
>
>_______________________________________________
>lunar-update mailing list, moderated by Larry Kellogg
>To unsubscribe or change your options please visit:
>http://news.altair.com/mailman/listinfo/lunar-update
>Forwarded by GNU Mailman at Altair Engineering, Inc. http://www.altair.com/
>
This archive was generated by hypermail 2.1.6 : Wed Sep 21 2005 - 14:48:33 UTC