Huge thanks to astrophysicist Ian Wilson for this guest post which asks the questions overlooked or avoided by researchers in the mainstream of (sub)’standard’ model solar physics. Although Ian ‘frames no hypotheses’ regarding the physical mechanism(s) underlying the connection between solar variation and planetary motion, he continues to ask the searching questions which demand further investigation. The chance of these relationships holding across centuries by pure chance is so ridiculously low that the continued deliberate ignorance of them is less and less excusable as more and better correlations are discovered. Ian’s untiring effort to improve our knowledge is an inspiration to us all.
Why Does the Solar Cycle Keep Re-synchronizing Itself With the Gravitational Force of Jupiter That is Tangentially Pushing and Pulling Upon the Venus-Earth Tidal Bulge in the Sun’s Convective Layer?
Ian Wilson Phd (Astrophysics) April 2012
is based upon the idea that the gravitational force of Jupiter
acts upon the Venus-Earth tidal bulge that periodically
forms in the convective layer of the Sun. The cumulative effects
of Jupiter’s gravitational force (acting on the tidally induced
asymmetry) produces a tidal torquing that systematically
slows and then speeds up the rotation rate of a thin shell of the
Sun’s convective zone. The model proposes that it is these
changes in rotation rate that modulate the level of activity of
the sunspot cycle and possibly produce the torsional oscillation
that are observed in the Sun’s convective layer.
The blue curve in figures 1a, 1b, 1c, and 1d, shown below, is
the time-rate of change of the gravitational force of Jupiter,
tangential to the Sun’s surface, that acts upon the periodically
induced tidal bulge produced by the alignments of Venus and the
Earth every 1.599 years. The brown curve is simply the 1,2,1
binomial filtered version of the blue curve. Superimposed on
each of these figures are green vertical lines showing the dates
of solar minimum.
Figure 1a shows the period from 1740 to 1820, figure 1b the
period from 1810 to 1890, figure 1c the period from 1880 to
1960, and figure 1d the period from 1950 to 2030. The cycle
number for each solar sunspot cycle is displayed in each of the
Note: The vertical axis is the time-rate of change of the
gravitational force of Jupiter, acting tangential to the Sun’s
surface, that pulls and pushes upon the periodically induced
tidal bulge produced by the alignments of Venus and the Earth.
The units are metres per second^(2) per 1.599 years and it is
assumed that Jupiter’s gravitational force is acting upon one
percent of the mass of the convective layer of the Sun
(=0.0002 % of the mass of the Sun).
The two exceptions to this rule, are the minima at
the start of cycle 4 (see figure 1a) and cycle 23
(see figure 1d). In each case there is a clear loss
of synchronization between the rate of change of
Jupiter’s tangential acceleration and the timing of
the first minimum for that solar cycle. The loss of
synchronization is in the sense that the sunspot
minimum takes place more than ~ 3 years earlier
than the zero point in the change in Jupiter’s
The thing that makes cycles 4 and 23 stand out
from all the other sunspot cycles is the fact that
they are the longest sunspot cycles between 1750
and 2012, with cycle 4 lasting 13.7 years and
cycle 23 lasting 13.4 years. Additionally, both
of these cycles were long lasting because the decay
of each from their respective maximum sunspot
number was considerably longer than normal.
It also important to note that Cycle 4 was followed
by a two weak solar cycles (cycles 5 and 6) known
as the the Dalton Minimum. Many now believe that
the same thing is happening again with Cycles 24
and perhaps cycle 25 being historically weaker than
Note: There is a weak loss of synchronization for
the first minima of cycles 14, 15 and 16, with
re-synchronization occurring for the first minimum
of cycle 17. This corresponds with a series of
weak solar cycles which is sometimes called the
On the two occasions where synchronization is
significantly disrupted ( > 3 years - at the start
of cycles 4 and 23), the timing of the first sunspot
minimum of the next cycle immediately
re-synchronizes with the timing of the minimum
change in Jupiter’s tangential force acting upon
Venus-Earth tidal bulge.
This raises the important question:
Why does the Solar sunspot cycle re-synchronize itself
with the gravitational force of Jupiter that is tangentially
pushing and pulling upon the Venus-Earth tidal bulge in
the Sun’s convective layer?
The simplest explanation is that tidal torquing of Jupiter
upon the Venus-Earth tidal bulge must play a role in
determining the long-term changes in the overall level of
activity of the sunspot cycle.
Ian’s original article is at this link