Spectral Diagnostics of Non-Thermal Particles in the Solar Chromosphere

Details Spectral Diagnostics of Non-Thermal Particles in the Solar Chromosphere Spectral Diagnostics of Non-Thermal Particles in the Solar Chromosphere

Jun 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003jkas...36s..55f&link_type=abstract

Journal of the Korean Astronomical Society, vol. 36, S1, pp. S55-S61

Astronomy and Astrophysics

Astronomy

1

Sun: Chromosphere, Sun: Particle Beam, Line: Diagnostics

Scientific paper

There are at least three effects of the non-thermal particle bombardment on the solar atmosphere: (1) non-thermal ionization and excitation; (2) proton-hydrogen charge exchange; (3) impact line polarization. Due to the non-thermal ionization and excitation effects of electron bombardments in flares, Hα line is widely broadened and shows a strong central reversal. Significant enhancements at the line wings of Lyα and Lyβ are also predicted. In the case of proton bombardment, less strong broadening and no large central reversal are expected. However, due to proton-hydrogen charge exchange, the enhancements at the red wings of Lyα and especially of Lyβ lines at the early impulsive phase of flares are significant. Electron beam can also in some cases generates visible and UV continuum emission in white-light flares. However, at the onset phase, a negative ``black'' flare may appear in several seconds, due to the increase of the H- opacity. The impact polarization of atomic lines can provide complementary information on the energetic particles, the energy transport and deposit in the solar chromosphere. New results of spectropolarimetric analysis for the major flare on July 23, 2002 are also given in the paper.

Affiliated with

Also associated with

No associations

Rating

Spectral Diagnostics of Non-Thermal Particles in the Solar Chromosphere 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 Spectral Diagnostics of Non-Thermal Particles in the Solar Chromosphere, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectral Diagnostics of Non-Thermal Particles in the Solar Chromosphere will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1525760