| Auteur(s) supplémentaire(s) | Boris Filippov, Jean- Marc Lecleire, Nicolas Lefaudeux, Jean Mouette, François Sevre, Ehsan Tavabi and Christian Viladrich |
Abstract | The total solar eclipse of 21 Aug. 2017 was observed by our teams in excellent conditions for almost 1 hour (from Oregon at 17h12, Idaho 17h27, Wyoming 17h36 and Missouri, 18h12 U.T.).
Excellent images were recorded, including a sequence at very high spatiotemporal resolution covering dynamical phenomena related to an exceptionally slow CME that evolved over the E- limb.
i) The overall polarized K- corona, from linearly polarized images taken in 12 positions, is analyzed, to be compared to the latest quantitative magnetic dynamical coronal modeling.
ii) The Polar Regions are specially considered to compare the well observed W-L plumes with the EUV plumes simultaneously observed using the AIA of the SDO mission; we integrate 60 successive AIA images taken with the 171, the 193 and the 211 filters to improve the S/N ratio. The new view of dynamical polar plumes is illustrated at different temperature regimes. Some evidence of fast propagating transverse waves is obtained using deep spatially filtered W-L imaging of long linear polar filaments for larger radial distances.
iii) The E- limb slow CME that shown a constant 250 km/s velocity is analyzed in W-L with HR eclipse images and with images from SECCHI of the STEREO mission, with AIA of the SDO mission and with LASCO of the SoHO mission. Very small scale moving and curved W-L features at r> 2 Rs are analyzed for the 1st time with a 20 sec resolution; in addition, falling back remnants of the high latitude erupted prominence at the feet of the CME are detected in W-L, well after the eruption started.
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