Spatial correlation of H-alpha filaments and photospheric velocity

Details Spatial correlation of H-alpha filaments and photospheric velocity Spatial correlation of H-alpha filaments and photospheric velocity

Jan 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976soph...46..137m&link_type=abstract

Solar Physics, vol. 46, Jan. 1976, p. 137-148.

Physics

6

H Alpha Line, Photosphere, Solar Prominences, Solar Spectra, Line Spectra, Metal Ions, Solar Magnetic Field, Sunspots

Scientific paper

The relationship between H-alpha structures and the photospheric line of sight component of both the magnetic and velocity field is studied. The velocity charts were plotted from the Doppler shift observed for the Fe I 5576 A line (which is insensitive to the effects of the magnetic field). Simultaneous observations of the magnetic field in the Fe I 5250 A line and continuum were also used. Observations were carried out at 2-arcsec intervals across the disk. The H-alpha structures used for comparison were obtained from spectroheliograms. The spatial location of H-alpha structures was determined with respect to sunspots. It is found that in most cases the isophote corresponding to 87% of the continuum background outlines the edges of visible penumbra in Ca II (K(1v) line) while the 58% isophote corresponds to umbra.

Affiliated with

Also associated with

No associations

Rating

Spatial correlation of H-alpha filaments and photospheric velocity 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 Spatial correlation of H-alpha filaments and photospheric velocity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spatial correlation of H-alpha filaments and photospheric velocity will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1574597