Tracking Solar Gravity Modes: The Dynamics of the Solar Core
Publication date: 04 May 2007
Authors: García, R.A. et al
Journal: Science Magazine Online
Year: 2007
Copyright: American Association for the Advancement of Science
The solar gravity modes have not been conclusively detected in the Sun as yet due to their small surface amplitudes. They have been actively searched for because they directly probe the solar burning core (below 0.2 solar radius). Using data from the Global Oscillation at Low Frequency instrument we detect a periodic structure, which is in agreement with the period separation predicted by the theory for gravity dipole modes. The detailed study of this structure, compared to simulations including the best physics of the Sun determined through the acoustic modes, would favor a faster core rotation rate than in the rest of the radiative zone.
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