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3He-Rich Solar Energetic Particles: Solar Sources View all abstracts by submitter

Radoslav Bučík   Submitted: 2020-03-02 10:25

3He-rich solar energetic particles (SEPs), showing up to a 10,000-fold abundance enhancement of rare elements like 3He or ultra-heavy nuclei, have been a puzzle for more than 50 years. One reason for the current lack of understanding of 3He-rich SEPs is the difficulty resolving the source regions of these commonly occurring events. Since their discovery, there has been strong evidence that 3He-rich SEP production is associated with flares on the Sun. Anomalous abundances of 3He-rich SEPs have been attributed to a unique acceleration mechanism that must routinely operate at flare sites. Flares associated with 3He-rich SEPs have been often observed in jet-like forms indicating an acceleration in magnetic reconnection involving field lines open to interplanetary space. Owing to a fleet of spacecraft around the Sun, providing a greatly improved resolution of solar imaging observations, 3He-rich SEP sources are now explored in unprecedented detail. This paper outlines the current understanding of 3He-rich SEPs, mainly focusing on their solar sources.

Authors: Bučík, R.

Publication Status: Space Sci Rev 216, 24 (2020)
Last Modified: 2020-03-12 14:25
Go to main E-Print page  Response of SDO/HMI observables to heating of the solar atmosphere by precipitating high-energy electrons   Statistical Study of Hard X-Ray Emitting Electrons Associated with Flare-related Coronal Jets   Edit Entry  Download Preprint  Submitter's Homepage Delete Entry 

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