Solar abundances from gamma-ray spectroscopy: Comparisons with energetic particle, photospheric, and coronal abundances

R. J. Murphy*, R. Ramaty, B. Kozlovsky, D. V. Reames

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

We have derived accelerated particle and ambient gas abundances using solar flare gamma-ray spectroscopy. We compare the results with photospheric and coronal abundances, as well as with solar energetic particle abundances. This is the first time that the compositon of accelerated particles interacting in an astrophysical source has been compared with the composition of particles escaping from the source. Our analysis shows that the derived composition of the accelerated particles is different from the compositon of particles observed in large proton flares; rather, it resembles the composition observed in 3He-rich flares. Our analysis also suggests an ambient gas composition which differs from the composition of both the photosphere and the corona.

Original languageEnglish
Pages (from-to)793-803
Number of pages11
JournalAstrophysical Journal
Volume371
Issue number2
DOIs
StatePublished - 20 Apr 1991

Keywords

  • Gamma rays: general
  • Sun: abundances
  • Sun: flares
  • Sun: particle emission

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