Venusian DC Electric Fields Using PSP; A Look into Different Sources and their Uncertainties

Authors: Dylan Conner (West Virginia University), Katherine Goodrich (West Virginia University), Harriet George (University of Colorado), David Malaspina (University of Colorado), John W Bonnell (SSL, UC Berkeley), Shannon Curry (SSL, UC Berkeley), Davin Larson (SSL, UC Berkeley), Roberto Livi (SSL, UC Berkeley), Phyllis Whittlesey (SSL, UC Berkeley), Yingjuan Ma (UCLA), Michael Stevens (Harvard University), Justin Bowman (West Virginia University), Justin Riggs (West Virginia University)

Parker Solar Probe (PSP), while engaging in gravity assist maneuvers with Venus, obtained several plasma measurements, including differential voltages, ion velocities, and magnetic fields. By using the observations from PSP, we can calculate DC vector electric fields in the Venusian induced magnetosphere. The derivation of these electric fields, however, is challenging due to the instrumental requirements placed on PSP to observe the near-Sun environment. It has been shown that specialized calibration and analysis of PSP electric field data is required within the Venusian plasma environment. We present calibration findings, specifically comparison between calibration methods of a –(vxB) approach using SPC and SPAN-Ion instrument velocities, along with initial MHD simulation electric fields for comparison. With these findings, examination of fully calibrated Venusian electric fields and further analysis become feasible.