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SUMMARY:The Grand Challenge Questions of Solar Wind Physics  - Nicholeen V
 iall (NASA Goddard Space Flight Center)
DTSTART:20230309T160000Z
DTEND:20230309T170000Z
UID:TALK213019@talks.cam.ac.uk
CONTACT:88984
DESCRIPTION:The solar atmosphere is heated to millions of Kelvin\, which i
 s several orders of magnitude hotter than the visible solar surface below.
  This hot atmosphere is a plasma\, and flows outwards\, forming a super Al
 fvénic solar wind that defines the heliosphere. The solar wind is compris
 ed of structures across a range of scales\, with complexity among the stru
 ctures due to a competition between those structures that are imposed and 
 injected directly from the solar atmosphere\, and dynamical evolution as t
 he solar wind flows outwards. There have been remote observations of the s
 olar corona for centuries\, and in situ measurements of the solar wind for
  almost 60 years. Computer simulation capabilities have commenced\, and si
 mulation techniques of the cross-scale and cross-regional coupling continu
 e to advance. Yet there are longstanding\, major unsolved pieces of this p
 uzzle\, involving universal physical processes such as magnetic reconnecti
 on\, turbulence\, and waves. In this talk\, we discuss these grand challen
 ge questions and discuss progress and future prospects with recent result 
 from Parker Solar Probe\, and Solar Orbiter\, as well as the expected resu
 lts from the upcoming Polarimeter to Unify the Corona and Heliosphere miss
 ion.  
LOCATION:Hoyle Lecture Theatre\, IoA (tea at 3:30 pm)
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