Modeling Solar Energetic Neutral Atoms from Solar Flares and CME-driven Shocks
Abstract
We examine the production of energetic neutral atoms (ENAs) in solar flares and coronal mass ejection (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 acceleration sites: large loops in solar flares and downstream of CME-driven shocks, in large SEP events.
Additional Information
© 2023. The Author(s). Published by the American Astronomical Society. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. This work is supported in part by NASA grants 80NSSC19K0075, 80NSSC19K0079, and 80NSSC20K1783 at UAH. Work at SwRI is partially supported by NASA LWS grants 80NSSC19K0079 and 80NSSC20K1815. Work at APL is partially supported by NASA contract 80MSFC19F0002.Attached Files
Published - Li_2023_ApJ_944_196.pdf
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Additional details
- Eprint ID
- 120072
- Resolver ID
- CaltechAUTHORS:20230315-645491100.4
- NASA
- 80NSSC19K0075
- NASA
- 80NSSC19K0079
- NASA
- 80NSSC20K1783
- NASA
- 80NSSC20K1815
- NASA
- 80MSFC19F0002
- Created
-
2023-05-16Created from EPrint's datestamp field
- Updated
-
2023-05-16Created from EPrint's last_modified field
- Caltech groups
- Space Radiation Laboratory