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Physicists describe sun's electric field


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IMAGE: University of Iowa physicists have gained new insights about the sun s electric field. The researchers measured electrons streaming from the sun, a main constituent of the solar wind, to determine.
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Credit: Jasper Halekas lab, University of Iowa
As the Parker Solar Probe ventures closer to the sun, we are learning new things about our home star.
In a new study, physicists led by the University of Iowa report the first definitive measurements of the sun s electric field, and how the electric field interacts with the solar wind, the fast-flowing current of charged particles that can affect activities on Earth, from satellites to telecommunications. ....

France General , United States , University Of Iowa , Smithsonian Observatory , Robert Macdowall , Phyllis Whittlesey , Michael Stevens , Marc Pulupa , Stuart Bale , Davin Larson , Laura Bercic , Justin Kasper , Jasper Halekas , University College London , Goddard Space Flight Center , University Of California , University Of Paris , Department Of Physics , University Of Michigan , Parker Solar Probe , Solar Wind Electrons , Matthieu Berthomier , Smithsonian Astrophysical Observatory , Anthony Case , Space Flight , ஒன்றுபட்டது மாநிலங்களில் ,

Which way does the solar wind blow?


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IMAGE: (Top panel, from left to right) July 12, 2012 coronal mass ejection seen in STEREO B Cor2, SOHO C2, and STEREO A Cor2 coronagraphs, respectively. (Bottom panel) The same images.
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Credit: Talwinder Singh, Mehmet S. Yalim, Nikolai V. Pogorelov, and Nat Gopalswamy
The surface of the sun churns with energy and frequently ejects masses of highly-magnetized plasma towards Earth. Sometimes these ejections are strong enough to crash through the magnetosphere the natural magnetic shield that protects the Earth damaging satellites or electrical grids. Such space weather events can be catastrophic.
Astronomers have studied the sun s activity for centuries with greater and greater understanding. Today, computers are central to the quest to understand the sun s behavior and its role in space weather events. ....

San Diego , United States , Mangala Sharma , Nikolai Pogorelov , Vadim Roytershteyn Space Science Institute , University Of Alabama , Texas Advanced Computing Center , Space Systems Research Corporation , National Science Foundation , Lawrence Berkeley National Laboratory , Geospace Sciences , Division Of Atmospheric , Marshall Space Flight Centers , Predictive Science Inc , San Diego Supercomputing Center , Promoting Research , Space Weather , Space Science , Program Director , Predictive Science , Space Systems Research , Astrophysical Journal , Michael Gedalin , Ben Gurion University , Vadim Roytershteyn , Space Science Institute ,