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SUMMARY:Do in situ spacecraft observations contain signatures of intermitt
 ent solar wind acceleration from the Corona? - Lorenzo Matteini (Observato
 ry of Paris)
DTSTART:20171127T140000Z
DTEND:20171127T150000Z
UID:TALK94003@talks.cam.ac.uk
CONTACT:Dr William Béthune
DESCRIPTION:Two exciting new space missions approaching the Sun closer tha
 n ever will launch in the next future\, the NASA-Parker Solar Probe (PSP\,
  2018) and ESA-Solar Orbiter (SO\, 2020).\nThese missions will provide a n
 ovel vision of the Sun environment\, enabling a direct link between distan
 t Solar observations and in situ measurements of the solar wind\, the hot\
 , supersonic outflow that originates from the expansion of the Corona and 
 fills in the solar system\, carrying detailed information about the compos
 ition and thermodynamic state of the plasma in the Solar atmosphere.\nIn v
 iew of these forthcoming explorations\, we have performed a re-analysis of
  what today is still our closest approach to the Sun\, the Helios mission 
 that reached the orbit of Mercury (0.3AU). The Helios dataset\, although 4
 0-year old\, is still not fully exploited and is ideally suited for the mo
 delling of the PSP and SO missions and science predictions.\nI will discus
 s some new signatures of jet-like velocity shears observed in the solar wi
 nd close to the Sun\, possibly remnant of intermittent processes occurring
  in the Corona and Chromosphere and supporting the idea that the fast sola
 r wind acceleration region from coronal holes may be characterised by sign
 ificant shears and be less homogeneous than we think today. 
LOCATION:MR14\,  Centre for Mathematical Sciences\, Wilberforce Road\, Cam
 bridge
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