heliopause


Also found in: Thesaurus, Encyclopedia, Wikipedia.
Related to heliopause: termination shock, Bow shock

he·li·o·pause

 (hē′lē-ə-pôz′)
n.
The outer boundary of the heliosphere.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

heliopause

(ˈhiːlɪəʊˌpɔːz)
n
(Astronomy) the boundary between the region of space dominated by the solar wind and the interstellar medium
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.heliopause - the boundary marking the edge of the sun's influence; the boundary (roughly 100 AU from the sun) between the interplanetary medium and the interstellar medium; where the solar wind from the sun and the radiation from other stars meet
boundary, bounds, bound - the line or plane indicating the limit or extent of something
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations
References in periodicals archive ?
The boundary crossed by the intrepid probe as it journeys a bit more than 11 billion miles (18 billion km) from Earth is called the heliopause, a place where the hot solar wind runs up against the interstellar medium, the soup of stuff residing between the stars of our Milky Way galaxy.
The announcement came six years after its twin spacecraft, Voyager 1, broke the outer boundary of the heliopause, where the hot solar wind meets the cold, dense space between stars, known as the interstellar medium.
This outer edge is called the heliopause and this is where the tenuous, hot solar wind meets the cold and dense interstellar medium.
Eventually, it reaches pressure balance with the local interstellar medium at a boundary called the heliopause; the transition region between these boundaries is called the inner heliosheath.
Scientists hope the far-flung twins will survive until one of them crosses the heliopause, the outer limit of the Sun's magnetic influence, and moves into interstellar space."
The line up includes Dundrum's Tom Mc Shane, members of Junk Drawer, Richard Davis (Heliopause), The Mad Dalton and Pixie Saytar - all of them incredible artistes in their own right.
(https://voyager.jpl.nasa.gov/mission/interstellar-mission/) According to NASA , the two probes are now looking to find the heliopause boundary (boundary between the Sun's solar wind and interstellar medium), essentially the limits of the Sun's magnetic field and of its solar wind.
This simulation shows the origin of ribbon particles of different energies or speeds outside the heliopause (labeled HP).
"And the reason for this doubt is that when the spacecraft supposedly broke through the heliopause we should have seen some sort of distinctive shift in the magnetic field from one medium to the other," Schwadron says.
It is also three years to the day that Voyager I crossed the "heliopause", left our solar system and entered interstellar space.