Detection and limb brightening of the H bt I n=20-19 Rydberg line in the submillimetre spectrum of the Sun

Details Detection and limb brightening of the H bt I n=20-19 Rydberg line in the submillimetre spectrum of the Sun Detection and limb brightening of the H bt I n=20-19 Rydberg line in the submillimetre spectrum of the Sun

May 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000a%26a...357..757c&link_type=abstract

Astronomy and Astrophysics, v.357, p.757-762 (2000)

Astronomy and Astrophysics

Astrophysics

5

Line: Identification, Sun: General, Sun: Atmosphere, Sun: Infrared

Scientific paper

Submillimetre spectra taken near to the solar limb with a polarizing interferometer on the James Clerk Maxwell Telescope have been compared with disk-centre spectra to reveal a limb-brightened feature whose peak intensity occurs at the predicted frequency of the n=20-19 Rydberg transition in H I at 29.622 cm-1. A shoulder on this peak, at 29.65 cm-1, has been tentatively assigned to the equivalent transition in Mg I. The H I line exhibits limb brightening of up to 9% of the disk-centre continuum intensity. The intensity of the Mg I line is about half of the H I line intensity across the observed region near to the limb. Widths of the H I line are between 0.020 and 0.027 cm-1, smaller than predicted by current models of this line in the Sun's spectrum. These measurements represent the highest-n Rydberg lines detected to date in the solar spectrum. The measured line intensity, line width, limb brightening and the relative heights of the contributions from H I and Mg I place constraints upon further modelling of the solar atmosphere.

Affiliated with

Also associated with

No associations

Rating

Detection and limb brightening of the H bt I n=20-19 Rydberg line in the submillimetre spectrum 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 Detection and limb brightening of the H bt I n=20-19 Rydberg line in the submillimetre spectrum of the Sun, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detection and limb brightening of the H bt I n=20-19 Rydberg line in the submillimetre spectrum of the Sun will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1121688