p-mode profile asymmetry in GOLF data: variation with altitude

Details p-mode profile asymmetry in GOLF data: variation with altitude p-mode profile asymmetry in GOLF data: variation with altitude

Jan 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001esasp.464..681t&link_type=abstract

In: Proceedings of the SOHO 10/GONG 2000 Workshop: Helio- and asteroseismology at the dawn of the millennium, 2-6 October 2000,

Computer Science

6

Acoustic Mode Asymmetry, Correlated Noise

Scientific paper

We present here new results on the asymmetry of low degree p-mode profiles using GOLF and MDI data. The GOLF p-mode profiles asymmetry is found to be higher after the recovery of SOHO than it was before, whereas MDI profiles remained roughly the same. A complementary study of the phase difference between MDI and GOLF signals allows us to explain this behaviour. This study confirms the hypothesis of the influence of a correlated noise in GOLF data, and shows the dependency of this correlated noise with the observation altitude. The percentage of correlated noise in GOLF data is computed.

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