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August 26, 2025National Science ReviewOpen Access

The delayed arrival of faster solar energetic particles as a probe into the shock acceleration process

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Authors

YLYuncong LiJGJingnan GuoDPDaniel Pacheco

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Overview

Observations reveal that high-energy particles arrive later than low-energy ones during solar eruptions, suggesting shock acceleration mechanisms.

Key Points

  • Inverse velocity dispersion has been observed in 10 solar energetic proton events, challenging existing theories.
  • High-energy particles arrived later than expected, indicating a complex particle acceleration process.
  • Analysis focused on shock diffusive acceleration and magnetic reconnection during solar eruptions.
  • Findings highlight the need for understanding the time scales in the shock acceleration process.

Cite This Study

Li et al. (2025) studied this question.

synapsesocial.com/papers/68af63ddad7bf08b1eae403dhttps://doi.org/10.1093/nsr/nwaf348
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