An investigation of short period oscillations of the solar irradiance and their time variations

Details An investigation of short period oscillations of the solar irradiance and their time variations An investigation of short period oscillations of the solar irradiance and their time variations

Aug 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987sao..rept.....n&link_type=abstract

Final Technical Report, 15 Feb. 1985 - 14 Dec. 1986 Smithsonian Astrophysical Observatory, Cambridge, MA.

Astronomy and Astrophysics

Astrophysics

Irradiance, Oscillations, P Waves, Solar Magnetic Field, Sunspots, Wave Propagation, Data Processing, Fast Fourier Transformations, Radiometers, Solar Maximum Mission

Scientific paper

Measurements of solar irradiance fluctuations by the Active Cavity Radiometer (ACRIM) instrument onboard the Solar Maximum Mission (SMM) show variations on a time scale of about 5 minutes due to solar p-mode oscillations, as well as longer-term variations related to solar magnetic activity. The question was studied whether the p-mode frequencies change with time as a result of changing solar structure associated with the activity cycle. The ACRIM data on SMM are particularly well-suited for this purpose, because the instrument operated continuously from February 1980 to December 1980 and again from May 1984 to the present. The main activity entailed a detailed study of the observational data to determine if a change in the p-mode frequencies is evident from the time of solar maximum to that of solar minimum. It was concluded that the measured eigenfrequencies were significantly higher during the 1980 time frame than during the 1984 to 1986 time frame. The conclusion that there is significant change in the eigenfrequencies with the activity cycle remains only tentative, and needs confirmation from analysis of more data during the upcoming solar maximum.

Affiliated with

Also associated with

No associations

Rating

An investigation of short period oscillations of the solar irradiance and their time variations 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 investigation of short period oscillations of the solar irradiance and their time variations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and An investigation of short period oscillations of the solar irradiance and their time variations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1342671