ocr: SOHO RESULTS In: this picture (lerf) MDI results for outer Jayers are combined with VIRGO results for the deep interior. Red areas are hotter and blue are cooler than expected. Virgo observes oscillations in the Sun's brightness due to the internal sound waves. Sound speeds deviate most from theoretical expectations in the level (red) where the urbulent outer region of the Sun meets the calmer interior. Whole-Sun frequencies by GOLF (right). These frequencies are remarka- bly free from background noise, espe- cially at the lower frequency range. From these trequency measurements, scientists ca ...
