Comparison of GONG and MDI solar p-mode background

Details Comparison of GONG and MDI solar p-mode background Comparison of GONG and MDI solar p-mode background

Apr 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004soph..220..399b&link_type=abstract

Solar Physics, Volume 220, Issue 2, pp.399-402

Physics

3

Scientific paper

Using Severino's model, we estimate the amount of coherent correlated and uncorrelated background and incoherent noise components needed to reproduce the following four helioseismic spectra: V power, I power, V I phase difference and V I coherence, using GONG and MDI data. We confirm that a coherent correlated component of 10-15% of the total background and noise is needed in both V and I and that a larger amount of coherent uncorrelated background is needed for MDI data compared to GONG data to compensate for a smaller incoherent noise.

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