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Voyager Enters Final Frontier Of Solar System
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post Jun 3 2005, 10:47 PM
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http://planetary.org/news/2005/voyager-upd...ation_0524.html

Voyager 1, the most distant human-made object in space, has crossed the termination shock, the last major threshold in the solar system, team members announced today at the annual American Geophysical Union (AGU) meeting in New Orleans, Louisiana.
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ljk4-1
post Mar 14 2006, 04:00 PM
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Astrophysics, abstract
astro-ph/0603318

From: Merav Opher [view email]

Date: Mon, 13 Mar 2006 19:30:59 GMT (539kb)

Effects of a Local Interstellar Magnetic Field on Voyager 1 and 2 Observations

Authors: Merav Opher, Edward C. Stone, Paulett C. Liewer

Comments: 12 pages, 5 figures

Journal-ref: Astrophysical Journal Letters v.640, 71, 2006

We show that that an interstellar magnetic field can produce a north/south asymmetry in solar wind termination shock. Using Voyager 1 and 2 measurements, we suggest that the angle $\alpha$ between the interstellar wind velocity and magnetic field is $30^{\circ} < \alpha < 60^{\circ}$. The distortion of the shock is such that termination shock particles could stream outward along the spiral interplanetary magnetic field connecting Voyager 1 to the shock when the spacecraft was within $\sim 2~AU$ of the shock. The shock distortion is larger in the southern hemisphere, and Voyager 2 could be connected to the shock when it is within $\sim 5~AU$ of the shock, but with particles from the shock streaming inward along the field. Tighter constraints on the interstellar magnetic field should be possible when Voyager 2 crosses the shock in the next several years.

http://fr.arxiv.org/abs/astro-ph/0603318


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dilo
post Mar 16 2006, 11:32 PM
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From updated solar wind speed diagram, Voyager-2 experienced a repentine increase (more than 100 Km/s) at the end of February/beginning of March.
In my understanding, transition through termination shock should produce a dramatic wind speed decrease, so this is not the case... Anyway still intriguing, because even if in the past Voyager-2 already observed speed close to 500 Km/s, now increase seems more repentine and appear associated to one of the largest ions density spikes ever observed by the spacecraft...
Any suggestion?


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Posts in this topic
- Sunspot   Voyager Enters Final Frontier Of Solar System   Jun 3 2005, 10:47 PM
- - spaceffm   Do You think it is possible to see a picture towar...   Jun 4 2005, 01:45 AM
|- - djellison   QUOTE (spaceffm @ Jun 4 2005, 01:45 AM)Is Voy...   Jun 4 2005, 05:51 AM
- - edstrick   The instruments on the scan platforms have been tu...   Jun 4 2005, 08:35 AM
- - PhilCo126   I thought it would last untill 2015 before the fir...   Nov 13 2005, 05:48 PM
|- - ljk4-1   QUOTE (PhilCo126 @ Nov 13 2005, 12:48 PM)I th...   Nov 14 2005, 03:52 PM
|- - The Messenger   QUOTE (ljk4-1 @ Nov 14 2005, 08:52 AM)I ...   Nov 14 2005, 07:08 PM
- - deglr6328   3-Sigma limits of what? Has anyone ever even studi...   Nov 14 2005, 08:23 PM
- - mike   I wouldn't complain if the increase in cosmic ...   Nov 14 2005, 08:41 PM
|- - ljk4-1   http://voyager.jpl.nasa.gov/mission/weekly-reports...   Jan 11 2006, 10:32 PM
|- - Rob Pinnegar   QUOTE (ljk4-1 @ Jan 11 2006, 04:32 PM)Di...   Jan 12 2006, 01:12 PM
|- - ljk4-1   Voyager Mission Status 11/18/2005 and 11/25/2005: ...   Feb 15 2006, 03:30 PM
|- - ljk4-1   COSMIC RAY MYSTERY SOLVED ------------------------...   Feb 22 2006, 05:12 PM
- - ljk4-1   Astrophysics, abstract astro-ph/0603318 From: Mer...   Mar 14 2006, 04:00 PM
|- - dilo   From updated solar wind speed diagram, Voyager-2 e...   Mar 16 2006, 11:32 PM
|- - Rem31   QUOTE (dilo @ Mar 17 2006, 12:32 AM) From...   Mar 25 2006, 03:13 AM
||- - Rob Pinnegar   QUOTE (Rem31 @ Mar 24 2006, 08:13 PM) How...   Mar 25 2006, 06:40 PM
||- - Bob Shaw   QUOTE (Rob Pinnegar @ Mar 25 2006, 07:40 ...   May 15 2006, 09:53 PM
|- - dilo   Something is definitely happening around Voyager-2...   May 15 2006, 09:35 PM
|- - dilo   Based on Solar System Simulator, Voyager-2 is only...   May 15 2006, 09:47 PM
|- - SigurRosFan   QUOTE (dilo @ May 15 2006, 11:47 PM) Base...   May 27 2006, 09:06 PM
- - Myran   QUOTE Dilo wrote: .....but I strongly suspect term...   May 16 2006, 03:13 PM
- - ljk4-1   Podcast Advisory ...   May 23 2006, 08:56 PM
|- - climber   [quote name='ljk4-1' date='May 23 2006...   May 23 2006, 09:47 PM
|- - dilo   Climber, Pioneer didn't reached the heliopause...   May 23 2006, 10:20 PM
|- - climber   [quote name='dilo' date='May 24 2006, ...   May 24 2006, 10:02 PM
- - ljk4-1   Voyager 2 Detects Odd Shape of Solar System's ...   May 24 2006, 06:31 PM
- - PhilCo126   The greatest traveller of all times !   May 26 2006, 07:01 PM
- - Analyst   Do you have a link to the press kit? Or a press ki...   May 27 2006, 06:39 AM
- - ljk4-1   Voyager Data May Reveal Trajectory Of Solar System...   Jun 1 2006, 02:46 PM
- - ljk4-1   PHYSICS NEWS UPDATE The American Institute of Phy...   Jun 1 2006, 03:35 PM
- - ljk4-1   Voyager Reports March 3, 2006 to March 24, 2006 Av...   Jun 9 2006, 02:59 AM
|- - Barnard   QUOTE (ljk4-1 @ Jun 9 2006, 03:59 AM...   Sep 30 2009, 09:23 AM
- - MCS   There's a new story at science.nasa.gov about ...   Sep 23 2006, 09:40 AM
|- - dilo   This is not exactly a new: Voyager 2 entered the h...   Apr 17 2008, 04:45 PM
|- - dilo   Further infos: As you know, contrary to his brothe...   Apr 17 2008, 09:11 PM
- - scalbers   I saw a nice talk that Ed Stone gave on this topic...   Apr 17 2008, 09:31 PM
|- - brellis   (edit: of course this is old news to UMSF thread r...   Jul 2 2008, 08:18 PM
- - Paolo   In the latest issue of Astronomy & Astrophysic...   Jul 27 2008, 02:12 PM
- - Fran Ontanaya   You may want to look at Voyager 2 wind speed data:...   Sep 24 2008, 06:48 AM
- - PhilCo126   http://www.nature.com/nature/videoarchive/voyager/   Oct 27 2008, 07:07 PM
- - Paolo   The latest issue of Astronomy & Astrophystics ...   Nov 1 2008, 04:15 PM
|- - dilo   Grazie, Paolo. Very interesting!   Nov 1 2008, 09:14 PM
- - Enceladus75   I'm curious to know what science instruments a...   Nov 3 2008, 06:07 PM
|- - dilo   and about instruments (from wikipedia): As of the ...   Nov 3 2008, 06:41 PM
- - Fran Ontanaya   About lifetime: http://voyager.jpl.nasa.gov/space...   Nov 3 2008, 06:25 PM
- - Enceladus75   Thanks guys. So it seems like both Voyagers will s...   Nov 3 2008, 07:42 PM
|- - dilo   Yes. More precisely, with the exception of the Vo...   Nov 4 2008, 06:24 AM
- - remcook   They always update these pages in batches with som...   Sep 30 2009, 09:57 AM
- - ZLD   Voyager 1 Sees Solar Wind Decline; Edges Closer to...   Dec 13 2010, 11:26 PM
- - brellis   From the 12/14 Space Daily article (wait - that...   Dec 14 2010, 03:29 AM
- - ZLD   I think this article could help: http://www.scienc...   Dec 14 2010, 04:28 AM
- - g4ayu   Just noticed that it's the top read news story...   Dec 14 2010, 12:14 PM
- - rogelio   Nice article about Edward Stone in today's LA ...   Apr 14 2011, 12:13 PM
- - jasedm   Thanks Rogelio - nice article Ed has quite some ...   Apr 14 2011, 04:43 PM
- - mchan   A Big Surprise from the Edge of the Solar System ...   Jun 10 2011, 02:11 AM
- - MarcF   Some good news from outer space : "Voyager ...   Jun 16 2011, 08:38 AM
- - jgoldader   Hi all, I'm working on an article on the Voya...   Jul 26 2011, 04:52 AM
- - remcook   Yes, last time I checked, they get put on the webs...   Jul 26 2011, 07:21 AM
- - Paolo   today on Science express: Voyager Measurements of ...   Dec 2 2011, 06:07 AM
- - remcook   Great, still doing good science!   Dec 2 2011, 08:37 AM
- - JTN   Curious to know if the measurements form anything ...   Dec 3 2011, 01:30 AM
|- - Paolo   QUOTE (JTN @ Dec 3 2011, 02:30 AM) Curiou...   Dec 3 2011, 08:54 AM
- - stevesliva   http://vega.lpl.arizona.edu/voyager_uvs/instrument...   Dec 3 2011, 02:49 AM
- - MarcF   It's getting really exiting !! Not lon...   Dec 13 2011, 10:43 AM
|- - hendric   QUOTE (MarcF @ Dec 13 2011, 04:43 AM) It...   Dec 13 2011, 07:03 PM
- - MarcF   Hehehe ! Oups !! This loss of C was re...   Dec 13 2011, 08:37 PM
- - volcanopele   I wouldn't call that a Freudian slip, but that...   Dec 13 2011, 09:59 PM
|- - ups   It's amazing that the science coming from the ...   Dec 17 2011, 07:14 PM
- - MarcF   Ever closer... http://www.jpl.nasa.gov/news/new...   Jun 20 2012, 07:03 PM
|- - dilo   QUOTE (MarcF @ Jun 20 2012, 08:03 PM) Eve...   Jun 21 2012, 04:58 AM
|- - dilo   At the end of August we had another two drops of l...   Sep 1 2012, 07:04 AM
- - MarcF   And more signs that "we" are almost in t...   Aug 7 2012, 03:49 PM
- - Astro0   Voyager 1 marks 35 years since launch and joining ...   Sep 5 2012, 07:13 AM
- - RoverDriver   I think that Voyagers are the coolest mission. Wh...   Sep 5 2012, 07:33 AM
|- - jasedm   QUOTE (RoverDriver @ Sep 5 2012, 08:33 AM...   Sep 5 2012, 06:42 PM
|- - dilo   I think this combined plot speaks by itself: V1 i...   Sep 14 2012, 01:13 PM
|- - TheAnt   It really looks like it. That particle/proton rate...   Sep 30 2012, 06:07 PM
|- - dilo   Thanks for the link, TheAnt! This recall me to...   Sep 30 2012, 06:49 PM
- - Paolo   on the next issue of Nature Voyager’s long goodbye...   Sep 5 2012, 06:16 PM
- - EdTruthan   NASA will host a media teleconference at 11 a.m. P...   Nov 30 2012, 07:27 PM
- - Floyd   Dilo Are your graph labels are correct >70 and ...   Nov 30 2012, 10:01 PM
|- - dilo   QUOTE (Floyd @ Nov 30 2012, 11:01 PM) Dil...   Dec 1 2012, 04:27 PM
- - Hungry4info   That's what the original graphs say. http://vo...   Nov 30 2012, 10:43 PM
- - Floyd   What am I missing. >70 is also >0.5, so ho...   Dec 1 2012, 03:33 AM
- - djellison   However - the value of >70 is small compared to...   Dec 1 2012, 10:17 AM
- - Explorer1   Starting here: http://www.ustream.tv/nasajpl2 Not...   Dec 3 2012, 07:03 PM
- - Tesheiner   News release: NASA Voyager 1 Encounters New Region...   Dec 3 2012, 07:31 PM
- - 0101Morpheus   So much for there being a clear cutoff point   Dec 6 2012, 08:07 PM
- - djellison   What would you call this? http://voyager.gsfc.nasa...   Dec 7 2012, 02:26 AM
- - Explorer1   I think this time they're very sure this is th...   Dec 7 2012, 06:49 AM
- - djellison   There will be no sharp cut off of gravity - why do...   Dec 7 2012, 12:07 PM
|- - Explorer1   I was replying to 0101Morpheus about whether there...   Dec 7 2012, 05:28 PM
- - 0101Morpheus   What I meant is that the scientists told us there ...   Dec 7 2012, 05:27 PM
- - 0101Morpheus   Seems we got our replies mixed up. Yes I know ...   Dec 7 2012, 05:32 PM
- - TheAnt   In the data for Voyager 2 we got a dip for the par...   Dec 24 2012, 09:17 PM
- - djellison   V2 is clearly in a very different environment to V...   Dec 24 2012, 09:34 PM
|- - TheAnt   QUOTE (djellison @ Dec 24 2012, 10:34 PM)...   Jan 1 2013, 10:50 AM
- - Explorer1   Until New Horizons gets out there, these two are t...   Dec 25 2012, 12:34 AM
- - stevesliva   QUOTE (Explorer1 @ Dec 24 2012, 07:34 PM)...   Dec 25 2012, 02:40 AM
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