terrestrial aurora: astrophysical laboratory for anomalous abundances in stellar systems
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ID: 196769
2014
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Abstract
The unique magnetic structure of the terrestrial aurora as a conduit of
information between the ionosphere and magnetosphere can be utilized as a
laboratory for physical processes at similar magnetic configurations and
applied to various evolutionary phases of the solar (stellar) system. The
most spectacular heliospheric abundance enhancement involves the 3He
isotope and selective heavy elements in impulsive solar flares. In situ
observations of electromagnetic waves on active aurora are extrapolated to
flaring corona in an analysis of solar acceleration processes of 3He,
the only element that may resonate strongly with the waves, as well as heavy
ions with specific charge-to-mass ratios, which may resonate weaker via their
higher gyroharmonics. These results are applied to two observed anomalous
astrophysical abundances: (1) enhanced abundance of 3He and possibly
13C in the late stellar evolutionary stages of planetary nebulae; and
(2) enhanced abundance of the observed fossil element 26Mg in meteorites
as a decay product of radioactive 26Al isotope due to interaction with
the flare-energized 3He in the early solar system.
| Reference Key |
roth2014annalesterrestrial
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|---|---|
| Authors | ;I. Roth |
| Journal | journal of food measurement and characterization |
| Year | 2014 |
| DOI |
10.5194/angeo-32-77-2014
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| URL | |
| Keywords |
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