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arXiv · 2212.00283

Modelling Solar Energetic Neutral Atoms from Solar Flares and CME-driven Shocks

Gang Li·Albert Y. Shih·Robert C. Allen·George Ho·Christina M. S. Cohen·Mihir Desai·Maher A. Dayeh·Glenn Mason
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Abstract

We examine the production of energetic neutral atoms (ENAs) in solar flares and CME-driven shocks and their subsequent propagation to 1 au. Time profiles and fluence spectra of solar ENAs at 1 au are computed for two scenarios: 1) ENAs are produced downstream at CME-driven shocks, and 2) ENAs are produced at large-scale post-flare loops in solar flares. Both the time profiles and fluence spectra for these two scenarios are vastly different. Our calculations indicate that we can use solar ENAs as a new probe to examine the underlying acceleration process of solar energetic particles (SEPs) and to differentiate the two accelertion sites: large loops in solar flares and downstream of CME-driven shocks, in large SEP events.

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Gang Li, Albert Y. Shih, Robert C. Allen, George Ho, Christina M. S. Cohen, Mihir Desai, Maher A. Dayeh, Glenn Mason. 2022-12-01. Modelling Solar Energetic Neutral Atoms from Solar Flares and CME-driven Shocks. https://doi.org/10.3847/1538-4357%2Facb494

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