The sun's internal angular velocity is estimated from observations of rotational splitting of low-order, low-degree global oscillations detected as fluctuations in the limb-darkening function. The inferred rapid rotation implies a unitless grativational quadrupole moment, J2, of (5.5±1.3)×10-6. When this result is combined with two published planetary radar results, values of 0.987±0.006 and 0.991±0.006 are obtained for 13(2+2γ-β), a quantity equal to 1 in the general theory of relativity.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)