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Solar Gravity Modes from Acrim/Smm Irradiance Data

  • Claus Fröhlich
Part of the International Astronomical Union / Union Astronomique Internationale book series (IAUS, volume 123)

Abstract

Solar irradiance data from the AC RIM solar constant experiment on board the Solar Maximum Mission satellite (SMM) have been used to search for solar gravity modes. The power spectra of the time series of 270 days in 1980 and of 240 days in 1984 are analysed using a statistical method for the determination of the basic g-mode period separation To and the rotational frequency v R. In the view of the proposal of weakly interacting massive particles (WIMP) in the solar core and their impact on T0 the search has been extended down to 25 minutes. The results of the analysis of both time series in the frequency range from 10 to 40 μHz are best fitted by a T0 of 29.85 minutes. This is close to the expected value for the WIMP model. The angular velocity in the center of the Sun inferred from the rotational splitting of the g-modes amounts to 6.6•10-6 per sec, which is 2.3 times the photospheric rate.

Keywords

Weakly Interact Massive Particle Synthetic Spectrum Irradiance Data Solar Maximum Mission Solar Core 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© International Astronomical Union 1988

Authors and Affiliations

  • Claus Fröhlich
    • 1
  1. 1.Physikalisch-Meteorologisches Observatorium Davos World Radiation CenterDavosSwitzerland

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