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Comparison OF Noise Properties Of GONG And MDI Time-Distance Helioseismic Data

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Abstract

The recently upgraded system of the ground-based Global Oscillation Network Group (GONG) network of helioseismic observatories has started to provide higher-resolution solar oscillation measurements suitable for local helioseismic studies. Selecting simultaneously observed regions on the Sun by both GONG and the space-borne Michelson Doppler Imager (MDI) instrument on board the Solar and Heliospheric Observatory (SOHO), we perform a comparative analysis of time-distance measurements focussing on the noise properties.

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Authors and Affiliations

  1. Space and Atmospheric Physics Group, The Blackett Laboratory, Imperial College, London, SW7 2BW, UK

    S.P. Rajaguru, S.J. Hughes & M.J. Thompson

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  1. S.P. Rajaguru
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  2. S.J. Hughes
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  3. M.J. Thompson
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Rajaguru, S., Hughes, S. & Thompson, M. Comparison OF Noise Properties Of GONG And MDI Time-Distance Helioseismic Data. Solar Physics 220, 381–398 (2004). https://doi.org/10.1023/B:SOLA.0000031396.28529.2e

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  • DOI: https://doi.org/10.1023/B:SOLA.0000031396.28529.2e

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