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Whatareplumes??
Arethereflowsinplumes?
aretheypresentatalltimes
oronlyoccasionally?
Areplumesdetectableinthe
distantsolarwind?
Canweestimatetheplume
contributiontothewindCourtesyoftheESA/Proba2
massflux?Consortium/IAP,,S.Koutyy/J.Mpuette
SolarWind14June22-26,2015,
Weihai,
Arethereflowsinplumes?Directevidence
WecandetectflowsbyeithermeasurementsofDopplershifts
orbyusingtheDopplerDimmingtechnique(DD).
Hassler,Dsch,Lemaire,etal.
Science,283,810,1999
Likely,plumehavenoorinsignificant
roleinsolarwind
Teriaca,Poletto,Romoli,ApJ588,566,2003Above1.6solarradiiplumesflow
Seealso,e.g.,Giordanoetal,2000;ataslowerspeedthaninterplumes
PatsourakosandVial,2000;Gabrieletal.
2003,2005;Raouafietal.,20073
Arethereflowsinplumes?Furtherdirectevidence
Fu,Xia,Lietal.,ApJ794,109,2014
Outflowsfromtheobservedblueshiftsreaseswith
heightfrom10km/sat1.02to25km/sat1.05Rsun.The
authorplumescontributesubstantiallytoSW
SolarWind14June22-26,2015,4
Weihai,
Arethereflowsinplumes?Indirectevidence
BecauseplumesoccurHs,whicharesourcesofthefast
wind,bycomparingplumeand
fastwindelementabundancewe
mayhaveanindicationofthe
presenceofplumesinfastwind.
Firstmeasurements(Widing&
Feldman,1992)favor
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