Impact of low-frequency p modes on the inversions of the internal rotation of the Sun

Details Impact of low-frequency p modes on the inversions of the internal rotation of the Sun Impact of low-frequency p modes on the inversions of the internal rotation of the Sun

2008-11-11

arxiv.org/abs/0811.1745v1

Astronomy and Astrophysics

Astrophysics

4 pages, 5 figures, Conference proceeding GONG 2008 / SOHO XXI Meeting

Scientific paper

We used the m-averaged spectrum technique ("collapsogram") to extract the low-frequency solar p-mode parameters of low- and intermediate-angular degrees (l \leq 35) in long time series of GONG and MDI observations. Rotational splittings and central frequencies have been measured down to ~850\muHz, including predicted modes which have not been measured previously. Both GONG and MDI frequency splitting data sets were numerically inverted to extract the internal solar rotation rate. The impact of the very low-frequency observables and the differences between GONG and MDI data sets on the inversion results are also analyzed.

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