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Parker Solar Probe Confirms Long-Standing Solar Reconnection Theory In Situ

An SwRI-led Nature Astronomy study validated decades of reconnection modeling by analyzing PSP’s 2022 pass through a coronal eruption using complementary Solar Orbiter views.

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image: ©IngaNielsen | iStock

Overview

  • On September 6, 2022, Parker Solar Probe traversed a reconnection region in the Sun’s corona during a large eruption, directly sampling plasma and magnetic fields.
  • The measurements aligned with predictions from decades-old numerical models, providing strong empirical constraints for future simulations.
  • Findings bridge detailed reconnection physics observed by NASA’s MMS near Earth with the same process operating on solar scales.
  • Researchers combined in-situ diagnostics with imaging and ESA’s Solar Orbiter observations to identify and characterize the reconnection site.
  • The team plans targeted studies of turbulence, magnetic fluctuations, waves, and particle acceleration to sharpen space-weather forecasting.