Solar Physics Division Meeting 2000, June 19-22
Session 1. Helioseismology, Magnetic Fields, Chromosphere and Transition Region
Display, Chair: C. U. Keller, Monday-Thursday, June 19, 2000, 8:00am-6:00pm, Forum Ballroom

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[1.02] Solar rotation From GOLF/LOWL

T. Corbard, S. J. Jiménez Reyes, S. Tomczyk (High Altitude Observatory / National Center for Atmospheric Research), GOLF Team

The solar core rotation is an important open question that can be addressed by using observations from the spacecraft SOHO and ground based instruments. In particular, GOLF experiment on board SoHO is dedicated to the observation of low-degree oscillations which penetrate the solar core and it has been operating for more than three years. Similarly, LOWL instrument has been collecting data from ground for both low and intermediate degrees for more than 6 years. It is now well established that the differential rotation observed at the surface persists in the convection zone and become mainly solid in the radiative interior through a transition zone called the tachocline. Nevertheless it is still controversial to know if the core is rotationg slower, faster or at the same rate than the radiative interior. We use new data acquired during the last years and recently analysed from GOLF and LOWL in order to give an up to date status of our knowledge on the solar core rotation.

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