Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995a%26a...297..574h&link_type=abstract
Astronomy and Astrophysics, v.297, p.574
Astronomy and Astrophysics
Astrophysics
13
Line: Profiles, Sun: Uv Radiation, Sun: Flares
Scientific paper
The Lyα and Lyβ line profiles, including the nonthermal excitation and ionization of hydrogen by electron or proton bombardment, have been computed for atmospheres with the temperature distributions of the semi-empirical models F_1_ and F_2_. These computations indicate that the intensities at the line wings are greatly enhanced by nonthermal effects, especially for an electron beam bombardment. These effects are the most obvious when the coronal column mass is relatively small. Thus, nonthermal effects should be the most pronounced just at the beginning of the impulsive phase. After the maximum of the impulsive phase, due to a fast increase of the coronal column mass, these effects will rapidly decrease.
Fang Chen
Gan Wei-Qun
Hénoux Jean-Claude
No associations
LandOfFree
Diagnostics of non-thermal processes in chromospheric flares. III. Lyα and Lyβ spectra for an atmosphere bombarded by electron or proton beams. 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 Diagnostics of non-thermal processes in chromospheric flares. III. Lyα and Lyβ spectra for an atmosphere bombarded by electron or proton beams., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Diagnostics of non-thermal processes in chromospheric flares. III. Lyα and Lyβ spectra for an atmosphere bombarded by electron or proton beams. will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1056213