Solar Gravity Modes from Acrim/Smm Irradiance Data

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


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.


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.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Berthomieu,G., G.Gonczi, Ph.Graff, J.Provost and A.Rocca: 1978, Astron. Astrophys. 70, 579.ADSGoogle Scholar
  2. Berthomieu,G.: 1983, Observatoire de Nice, private communication.Google Scholar
  3. Däppen, W., R.L.Gilliland & J.Christensen-Dalsgaard: 1986, Nature, 321, p. 229.ADSCrossRefGoogle Scholar
  4. Delache,Ph. & P.Scherrer: 1983, Nature, 306, p. 651.ADSCrossRefGoogle Scholar
  5. Duval T.L.Jr. & J.W.Harvey: 1984, Nature, 310, p. 22.ADSCrossRefGoogle Scholar
  6. Faulkner,J., D.O.Gough & M.N.Vahia: 1986, Nature, 321, p. 226.ADSCrossRefGoogle Scholar
  7. Fröhlich, C. and Ph.Delache: 1984a, Mem.S.AJt., 55, p. 99.ADSGoogle Scholar
  8. Fröhlich, C. and Ph.Delache: 1984b, JPL PubL 84-84, Dec.1984, p. 183.Google Scholar
  9. Isaak, G.R., H.B. van der Raay, P.L. Pallé, T.Roca Cortés and Ph. Delache: 1984, Mem. S.A. lt., 55, p. 91.ADSGoogle Scholar
  10. Kotov V.A., A.B.Severny and T.T.Tsap: 1984, Mem.S.AJt, 55, p. 117.ADSGoogle Scholar
  11. Pallé, P.L. and T.Roca Cortés, these proceedings.Google Scholar
  12. Seherrer, P.: 1986, these proceedings.Google Scholar
  13. Tassoul, M.: 1980, Astroph.J., 43, p. 469.ADSCrossRefGoogle Scholar

Copyright information

© International Astronomical Union 1988

Authors and Affiliations

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

Personalised recommendations