Solar abundances from gamma-ray spectroscopy - Comparisons with energetic particle, photospheric, and coronal abundances
- 1. Tel Aviv University (Israel)
- 2. NASA, Goddard Space Flight Center, Greenbelt, MD (USA)
- 3. Universities Space Research Association, Greenbelt, MD (USA)
- 4. NASA, Goddard Space Flight Center (USA)
Description
Accelerated particle and ambient gas abundances have been derived using solar flare gamma-ray spectroscopy. The results with photospheric and coronal abundances, as well as with solar energetic particle abundances. This is the first time that the composition of accelerated particles interacting in an astrophysical source has been compared with the composition of particles escaping from the source. The analysis shows that the derived composition of the accelerated particles is different from the composition of particles observed in large proton flares; rather, it resembles the composition observed in He-3-rich flares. The analysis also suggests an ambient gas composition which differs from the composition of both the photosphere and the corona. 28 refs
Additional details
Publishing Information
- Journal Title
- Astrophysical Journal
- Journal Volume
- 371
- Series
- Astrophys. J.
- Journal Page Range
- 793-803
- ISSN
- 0004-637X
- CODEN
- ASJOA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 22078517
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Descriptors DEI
- ACCELERATION; CHEMICAL COMPOSITION; COMPARATIVE EVALUATIONS; ELEMENT ABUNDANCE; GAMMA SPECTRA; PHOTOSPHERE; SOLAR ATMOSPHERE; SOLAR CORONA; SOLAR FLARES; SOLAR PARTICLES
- Descriptors DEC
- ATMOSPHERES; EVALUATION; QUANTITY RATIO; RADIATIONS; SOLAR ACTIVITY; SOLAR RADIATION; SPECTRA; STELLAR ACTIVITY; STELLAR ATMOSPHERES; STELLAR CORONAE; STELLAR FLARES; STELLAR RADIATION