- 1University of California, Berkeley, Space Sciences Laboratory, Berkeley, United States of America (bale@berkeley.edu)
- 2Smithsonian Astrophysical Observatory, Cambridge, MA 02138 USA
- 3LPC2E/CNRS, UMR 7328, 45071 Orleans, France
- 4School of Physics and Astronomy, University of Minnesota, Minneapolis, MN 55455, USA
- 5The Blackett Laboratory, Imperial College London, London, SW7 2AZ, UK
- 6Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO 80303, USA
- 7Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723, USA
- 8Department of Earth, Planetary and Space Sciences, University of California, Los Angeles, CA, USA
Parker Solar Probe had its lowest-ever perihelion of 9.86 solar radii on December 24, 2024 ('Encounter 22') and another on March 22, 2025 (Encounter 23). We will present data from these Encounters, focusing on magnetic field measurements, solar connectivity, and Heliospheric Current Sheet (HCS) crossings as the spacecraft crossed nearly halfway around the Sun in just 4 days. We also compare E22/E23 measurements of the radial magnetic field and field magnitude to trends from earlier Encounters showing increasing radially-normalized magnetic flux with altitude. We will review highlights of previous PSP solar encounters and compare to the latest encounters at the lowest-ever perihelion.
How to cite: Bale, S., Badman, S., Ervin, T., Dudok de Wit, T., Goetz, K., Horbury, T., Larson, D., Malaspina, D., Pulupa, M., Rawafi, N., Stevens, M., and Velli, M.: Parker Solar Probe at 9.86 solar radii: magnetic field structure, trends, and connectivity, EGU General Assembly 2025, Vienna, Austria, 27 Apr–2 May 2025, EGU25-4601, https://doi.org/10.5194/egusphere-egu25-4601, 2025.
