A 5% difference in rotation. I wonder how they can measure the rotation of the interior?
They can’t.
But they think they can.
Just like parallax.
Doesn’t work at the astronomical distances they claim.
But they think it does.
“I wonder how they can measure the rotation of the interior?”
It’s the same monitoring system they use here on Earth to watch man made global warming. It’s really very accurate. I read where the UN will mandate a sun ray tax to offset the difference.
The core has a different temperature than the surface. Even the temperature can vary, so they probably have taken thousands of measurements to measure the speed.
"Features revealed by helioseismology include that the outer convective zone and the inner radiative zone rotate at different speeds, which is thought to generate the main magnetic field of the Sun by a dynamo effect, and that the convective zone has "jet streams" of plasma (more precisely, torsional oscillations) thousands of kilometers below the surface."