Wobbly Universe
Post details: About 150 and 75 day Cycles in Sun's Brightness
20/04/07
About 150 and 75 day Cycles in Sun's Brightness
Below is a graphic showing plot of daily measurements of solar irradiance (effectively brightness) from 1979 to 1993 as measured by Nimbus 7 (upper graph). It is noticeable that as well as the broad sweep of the 11 year solar cycle, the irradiance of the Sun shows very sudden drops of up to 0.25% that last just a few days.
I have marked in red two regions where these drops are quite regular, and the periods found are ~150 and ~75 days. These periods are near commonly reported solar cycles of 154 and 77 days reported in a variety of solar measurements. The shape of the cycle is very far from sinosoidal, being very lopsided so that the dips are very short compared to the peaks. Such shape is characteristic of behaviour that flips between two quite different forces such as a bouncing ball where gravity controls one part of the motion and compression the other.
Interestingly the longer period occurs near solar minimum and the shorter one near solar maximum. This is an indication of an underlying process that has switched to twice the frequency (harmonic) under more intense conditions, a quite common physical response.
A search for cycles of about 155 days in Solar irradiance does show a number of articles:
http://www.google.co/search?q=140..170+day+cycle+solar+irradiance
as does about 77 days http://www.google.co/search?num=100&hl=en&q=70..85+day+cycle+solar+irradiance
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Wobbly Universe
Blog of Ray Tomes research on cycles, news reports on cycles, my original research on the Harmonics Theory and discussion of these matters.
There are cycles in everything. There are cycles in the weather, the economy, the sun, wars, geological formations, atomic vibrations, climate, human moods, the motions of the planets, populations of animals, the occurrence of diseases, the prices of commodities and shares and the large scale structure of the universe. None of these are independent of each other.
Research shows that very different disciplines often find the same cycle periods in their data. The inter-relatedness of all things is an idea who's time has come. The study of cycles is an excellent way to understand this because the periods of cycles are as easy to recognise as fingerprints or DNA sequences.
"The universe, believe it or not, is nothing other than a giant musical instrument with a very special but predictable pattern of harmonically related oscillations which determine the structure of everything from galactic clusters to subatomic particles and we are just parts of the various vibration modes."
The single axiom of the Harmonics Theory is that:
The Universe consists of a standing wave which develops harmonically related standing waves and each of these does the same.
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