SH047-07
Parker Solar Probe observations of the first three Venus flybys: foreshocks, shocks and particle acceleration

Tuesday, 15 December 2020: 16:44
Virtual
Shannon Curry1, Jacob Gruesbeck2, Katherine Goodrich3, Roberto Livi1, Phyllis L Whittlesey1, Ali Rahmati4, Chuanfei Dong5, Yingjuan Ma6, Stuart D Bale4, Marc Pulupa1, David Malaspina7, Justin Christophe Kasper8, Janet G Luhmann4, Anthony W Case9, Michael Louis Stevens9, Davin E Larson10, Trevor A Bowen11, Candace Gray12, John W Bonnell3, Glyn Collinson13, Robert J MacDowall14, Aleida Katherine Higginson15, Nour E. Raouafi16 and Peter Harvey17, (1)Space Sciences Laboratory, University of California Berkeley, Berkeley, CA, United States, (2)University of Maryland College Park, College Park, MD, United States, (3)University of California, Berkeley, Space Sciences Laboratory, Berkeley, CA, United States, (4)University of California Berkeley, Space Sciences Laboratory, Berkeley, CA, United States, (5)Princeton University, Princeton, NJ, United States, (6)University of California Los Angeles, Los Angeles, CA, United States, (7)University of Colorado, Astrophysical and Planetary Sciences Department, Boulder, CO, United States, (8)University of Michigan, Climate and Space Sciences and Engineering, Ann Arbor, MI, United States, (9)Smithsonian Astrophysical Observatory, Cambridge, MA, United States, (10)Space Sciences Laboratory, Berkeley, CA, United States, (11)University of California Berkeley, Berkeley, CA, United States, (12)New Mexico State University, Las Cruces, NM, United States, (13)NASA Goddard Space Flight Center, Greenbelt, United States, (14)NASA/Goddard Space Flight Center, Greenbelt, United States, (15)University of Michigan, AOSS, Ann Arbor, MI, United States, (16)Johns Hopkins University, Baltimore, MD, United States, (17)Space Sciences Laboratory, Berkeley, United States
Recorded Presentation
Abstract:
In order to study the solar corona, the Parker Solar Probe (PSP) mission will fly closer to the Sun than any spacecraft by performing seven gravity assists at Venus. These gravity assists provide a rare opportunity to study the induced magnetosphere and solar-wind interaction at Venus with the instrumentation aboard PSP. Using data from the Fields experiment (FIELDS) and the Solar Wind Electrons Alphas and Protons Investigation (SWEAP), we will present plasma and field observations from the first three PSP Venus flybys, including the highest resolution in-situ electric field observations to ever have been measured at Venus. The geometry of the first two Venus gravity assists was aligned along the quasi-parallel edge of the shock, while the third flyby crossed the induced magnetotail, providing a series of measurements that help determine the shape parameters and real time response of the shock to the upstream solar wind and interplanetary magnetic field. We will present foreshock observations and shock crossings from the different orbital geometries and compare those to Venus Express and Pioneer Venus Orbiter observations over similar parts of the solar cycle. We will also use the observed solar wind moments as upstream boundary inputs into a magnetohydrodynamic (MHD) model and present a global picture of the induced Venusian magnetosphere and the subsequent ion acceleration, as well as the magnetic topology throughout the first three flybys.
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