Determination of physical parameters in dark mottles.

Astronomy and Astrophysics – Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

27

Sun:Chromosphere, Fine Structure, Mottles, Spicules

Scientific paper

The application of the cloud model to measurements of the contrast as a function of wavelength in the Hα line has recently enabled us to derive numerical values for various parameters (such as velocity, source function, Doppler width and optical depth) of dark mottles observed near the center of the solar disk. The values of these parameters are used together with the calculations of Poland et al. (1971SPh....18..391P) and Yakovkin and Zel'dina (1975SPh....45..319Y) in order to determine the physical conditions in these structures. Thus population densities at levels 1, 2, 3 (N_1_, N_2_, N_3_), total particle density of hydrogen N_H_, electron density N_e_, electron temperature T_e_, gas pressure, total column mass, mass density and degree of hydrogen ionization can be determined. The values obtained are comparable with estimates obtained for spicules and mottles by different authors in the past and, furthermore, offer the prospect of putting observational constraints on non-LTE two-dimensional modelling of dark mottles observed in the Hα line which is currently in progress.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Determination of physical parameters in dark mottles. 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 Determination of physical parameters in dark mottles., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Determination of physical parameters in dark mottles. will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1877769

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.