Physics
Scientific paper
May 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agusmsp51b..08m&link_type=abstract
American Geophysical Union, Spring Meeting 2005, abstract #SP51B-08
Physics
7507 Chromosphere, 7511 Coronal Holes, 7594 Instruments And Techniques
Scientific paper
The He 1083 nm line (He), formed in the upper chromosphere, is used for observations of coronal holes (CH) near their origins at the solar surface. Weak He 1083 nm profiles in CHs show some peculiarities such as asymmetry, broadening, and a different ratio between the spectral components. These effects are small so that the influence of disturbing noise and approximations in reduction processes are important for the results. In this research we have used low noise and high spectral resolution observations carried out at the Kitt Peak McMath-Pierce telescope to establish the key characteristics of the He profile in CHs. For accurate reduction we corrected the He profile for spectral blending from water vapor and weak solar lines. We confirm our previous result, based on imaging-spectroscopy data from the Kitt Peak Vacuum Telescope, regarding broadening of the He line in CHs and explain previous instability of CH contrast in our procedure for CH recognition as an influence of hidden photospheric lines.
Jones Philip H.
Livingston Willam
Malanushenko Olena
Malanushenko V. P.
No associations
LandOfFree
The He I 1083 nm line in Coronal Holes, a study with high spectral resolution. 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 He I 1083 nm line in Coronal Holes, a study with high spectral resolution., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The He I 1083 nm line in Coronal Holes, a study with high spectral resolution. will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1699882