Parker Solar Probe discovers unexpected high-energy particle source in the solar corona, challenging existing models

Summary

NASA's Parker Solar Probe detected unexpectedly high-energy protons while passing through the solar corona during perihelion encounters at the heliospheric current sheet. These energetic particles far exceeded what existing models of particle acceleration could predict. A research team led by Mihir Desai at the Southwest Research Institute, including scientists from the University of Maryland, published their analysis in The Astrophysical Journal Letters, identifying a previously unknown source of high-energy particles.

Source

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