Detecting individual gravity modes in the Sun: Chimera or reality?

Details Detecting individual gravity modes in the Sun: Chimera or reality? Detecting individual gravity modes in the Sun: Chimera or reality?

2009-11-30

arxiv.org/abs/0911.5716v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

Highlight of Astronomy (HoA) proceedings of the JD-11, IAU 2009. 2 pages, 1 figure

Scientific paper

Over the past 15 years, our knowledge of the interior of the Sun has tremendously progressed by the use of helioseismic measurements. However, to go further in our understanding of the solar core, we need to measure gravity (g) modes. Thanks to the high quality of the Doppler-velocity signal measured by GOLF/SoHO, it has been possible to unveil the signature of the asymptotic properties of the solar g modes, thus obtaining a hint of the rotation rate in the core. However, the quest for the detection of individual g modes is not yet over. In this work, we apply the latest theoretical developments to guide our research using GOLF velocity time series. In contrary to what was thought till now, we are maybe starting to identify individual low-frequency g modes...

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