Search of 160 minutes oscillations in the Earth rotation spectrum

There were speculations in the past that there exists a universal 160 minutes period in the Universe. It was found that the Sun have oscillations with the period of about 160 minutes. There were reports that these oscillations are observed in another phenomena. NB: 160 minutes corresponds to S9 -- 9 times solar day frequency.

I have estimated the spectrum of the Earth orientation in the band [ -6.554*10-4, -6.536*10-4 ] and [ 6.536*10-4, 6.554*10-4 ] rad/sec using 20 years of VLBI data. I've bet with the Christian that there is no statistically significant signal there.

Results of the solution heo_02e are here:

    Table of the spectral estimates in plain ascii format.

    Table of spectral estimates in HEO format.

    Plot of spectral power of prograde polar motion.

    Plot of spectral power of retrograde polar motion.

    Plot of spectral power of UT1.

Well, what is your opinion, who has won the bet?

Back to Leonid Petrov's discussion page.

Last update: 06-APR-2004 20:35:13