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Sensitivity of solar wind mass flux to coronal temperature

AuthorStansby, D.; Bercic, L.; Matteini, L.; Owen, C.; French, R.; Baker, D.; Badman, S.;
KeywordsParker Data Used; parker solar probe; Solar Probe Plus
AbstractSolar wind models predict that the mass flux carried away from the Sun in the solar wind should be extremely sensitive to the temperature in the corona, where the solar wind is accelerated. We perform a direct test of this prediction in coronal holes and active regions using a combination of in situ and remote sensing observations. For coronal holes, a 50\% increase in temperature from 0.8 to 1.2 MK is associated with a tripling of the coronal mass flux. This trend is maintained within active regions at temperatures over 2 MK, with a four-fold increase in temperature corresponding to a 200-fold increase in coronal mass flux. \\Code to reproduce the figures presented in this Letter is available at PSP and WIND data are available from, GONG data from https://gong2.ns, SDO and SOHO data from, and EIS data from http://sol
Year of Publication2020
JournalAstronomy and Astrophysics
Number of PagesL2
Date Publishedjun