Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...308l..21m&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 308, Sept. 1, 1986, p. L21-L25.
Astronomy and Astrophysics
Astrophysics
17
Energetic Particles, Ion Charge, Solar Corpuscular Radiation, Solar Flares, Solar X-Rays, Photoionization, Solar Corona, Solar Wind
Scientific paper
Ionic charge states of solar energetic particles (SEP) from three flares have been reported by Luhn et al. (1984). Interpretations of the mean charges in terms of a source temperature Ts (assuming collisional ionization equilibrium) yield inconsistent results. For Mg, the required Ts (up to 8 x 10 to the 6th K) are larger than for N and Si by factors of up to 5. Here it is pointed out that flare X-rays photoionize the ambient corona, causing apparent ionization temperatures there to exceed the local electron temperature, Te. Using realistic flare X-ray fluxes, it is shown that the charge data for six elements (C, N, Ne, Mg, Si, and S) can be fitted if the source is at coronal temperatures (Te = 1-2 x 10 to the 6th K), but the ionization equilibrium is radiation dominated. For oxygen, a slight inconsistency persists in the three flares.
Mullan Dermott J.
Waldron Wayne L.
No associations
LandOfFree
Ionic charge states of solar energetic particles - Effects of flare X-rays does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Ionic charge states of solar energetic particles - Effects of flare X-rays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ionic charge states of solar energetic particles - Effects of flare X-rays will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1291076