Analysis of the Internal Structure of the Streamer Blow Out Observed the Parker Solar Probe during the First Solar Encounter
Résumé
We will present the analysis of the internal structure of a flux rope observed by the in-situ instruments onboard the Parker Solar Probe mission during the first solar encounter. On November 11th 2018, 23:53 UT, the FIELDS magnetometer recorded an increase of the magnetic field strength and monotonic change in the magnetic field direction. Simultaneously, SWEAP observed the low proton temperature and signatures of bidirectionality in the electron pitch angle distribution. The event was also observed remotely by the STEREO A/SECCHI instruments and identified as a streamer blow out first observed in COR2 on November 10th 2018 at 15:30 UT. The detailed reconstruction of the magnetic field configuration reveals deviations from an ideal flux rope 3D topology. Our study attempts to explore the causes of these deviations by exploring the possibility of distortion of the flux rope morphology, effects of magnetic field erosion, force imbalance on the active evolution, and local magnetic reconnection. Our findings will aid to determine the morphology, dynamics and survival of such structures in their journey from the solar source out in to the heliosphere.