The asymmetry of photospheric absorption lines. II - The asymmetry of medium-strong Fe I lines in quiet and active regions of the sun

Details The asymmetry of photospheric absorption lines. II - The asymmetry of medium-strong Fe I lines in quiet and active regions of the sun The asymmetry of photospheric absorption lines. II - The asymmetry of medium-strong Fe I lines in quiet and active regions of the sun

Jan 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...117..305k&link_type=abstract

Astronomy and Astrophysics, vol. 117, no. 2, Jan. 1983, p. 305-313.

Astronomy and Astrophysics

Astrophysics

35

Absorption Spectra, Iron, Line Spectra, Photosphere, Solar Spectra, Spectral Energy Distribution, Sunspots, Hydrodynamics, Perturbation Theory, Stellar Spectrophotometry, Wavelengths

Scientific paper

Significant differences in line asymmetry and wavelength shifts of line centers are obtained by photoelectric scans of six medium-strong Fe I lines in quiet and active regions close to the solar disk center. An I2-absorption tube was used for wavelength calibration. In addition, stronger line core blueshifts and smaller line flank blue bulges were shown by the bisectors in active regions around sunspots. These differences are interpreted in terms of a modification of the hydrodynamic structure of the photospheric layers beneath Ca(-)-plage regions. This interpretation is supported by both a second-order perturbation analysis quadratically relating line profile parameter variations with atmospheric quality variations, and a two-stream model representing atmospheric fluctuations by positive and negative rms values.

Affiliated with

Also associated with

No associations

Rating

The asymmetry of photospheric absorption lines. II - The asymmetry of medium-strong Fe I lines in quiet and active regions of the sun 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 The asymmetry of photospheric absorption lines. II - The asymmetry of medium-strong Fe I lines in quiet and active regions of the sun, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The asymmetry of photospheric absorption lines. II - The asymmetry of medium-strong Fe I lines in quiet and active regions of the sun will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1195074