Reliability of P mode event classification using contemporaneous BiSON and GOLF observations

Details Reliability of P mode event classification using contemporaneous BiSON and GOLF observations Reliability of P mode event classification using contemporaneous BiSON and GOLF observations

2008-08-12

arxiv.org/abs/0808.1668v1

Astronomy and Astrophysics

Astrophysics

7 pages, HELAS II: Helioseismology, Asteroseismology, and MHD Connections, conference proceeding

Scientific paper

10.1088/1742-6596/118/1/012088

We carried out a comparison of the signals seen in contemporaneous BiSON and GOLF data sets. Both instruments perform Doppler shift velocity measurements in integrated sunlight, although BiSON perform measurements from the two wings of potassium absorption line and GOLF from one wing of the NaD1 line. Discrepancies between the two datasets have been observed. We show,in fact, that the relative power depends on the wing in which GOLF data observes. During the blue wing period, the relative power is much higher than in BiSON datasets, while a good agreement has been observed during the red period.

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