Two-dimensional radiative transfer. II - The wings of CA K and MG K

Details Two-dimensional radiative transfer. II - The wings of CA K and MG K Two-dimensional radiative transfer. II - The wings of CA K and MG K

Oct 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...241..448o&link_type=abstract

Astrophysical Journal, Part 1, vol. 241, Oct. 1, 1980, p. 448-458.

Physics

14

K Lines, Radiative Transfer, Solar Atmosphere, Solar Spectra, Atmospheric Models, Calcium, Magnesium, Solar Physics

Scientific paper

The effect of horizontal radiative transfer on the Ca K and Mg k line wing intensities in two-component models of the solar atmosphere is investigated. No significant influence on the spatially unresolved wing profiles of either line was found, even for models in which the lateral variation was extreme over distances approaching a vertical scale height. Horizontal contrast as measured by the spatially resolved Mg k profile was found to be markedly reduced by lateral transfer over scales at or below the current resolution limit. Contrast as measured in the Ca K wing was relatively unaffected and was maintained down to lateral sizes approaching a vertical scale height. The behavior of Ca K relative to Mg k is attributed to the larger amount of photon destruction by incoherent scattering in the Ca K wing, which limits the distance that photons can diffuse laterally and forces the line to be formed near LTE. It is therefore concluded that the small-scale photospheric temperature structure predicted by many models can be detected in Ca K, and that efforts toward reducing seeing limitations on the resolution of solar observations should be encouraged.

Affiliated with

Also associated with

No associations

Rating

Two-dimensional radiative transfer. II - The wings of CA K and MG K 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 Two-dimensional radiative transfer. II - The wings of CA K and MG K, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two-dimensional radiative transfer. II - The wings of CA K and MG K will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-947551