An observational search for large-scale organization of five-minute oscillations on the sun

Details An observational search for large-scale organization of five-minute oscillations on the sun An observational search for large-scale organization of five-minute oscillations on the sun

Jul 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977stin...7822996d&link_type=abstract

Unknown

Computer Science

Sound

Solar Activity, Solar Corona, Solar Observatories, Solar Velocity, Magnetic Fields, Power Spectra, Sound Waves, Sunspots

Scientific paper

The large-scale solar velocity field has been measured over an aperture of radius 0.8 R on 121 days between April and Sept., 1976. Measurements are made in the line FeI 5123.730A, employing a velocity subtraction technique similar to that of Severny et al. (1976). Comparisons of the amplitude and frequency of the five-minute resonant oscillations with the geomagnetic C9 index and magnetic sector boundaries show no evidence of any relationship between the oscillations and coronal holes or sector structure. The average period measured for the five-minute oscillation is 312.0 plus or minus 0.9 sec, which is longer than the average 296.1 plus or minus 1.3 sec period originally reported by Noyes and Leighton (1963) from measurements in the line CaI 6103. The average amplitude is 2.0 m/s, which agrees reasonably with the 2.4 m/s value reported by Fossat and Ricort (1975). This amplitude is larger than might have been expected from an extrapolation of the work of Tanenbaum et al. (1969) to a large aperture, and is evidence of a large horizontal wavelength for the oscillations.

Affiliated with

Also associated with

No associations

Rating

An observational search for large-scale organization of five-minute oscillations on 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 An observational search for large-scale organization of five-minute oscillations on the sun, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and An observational search for large-scale organization of five-minute oscillations on the sun will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1562228