Title: ============== Study of the GOLF low frequency range spectra using MDI/SOI data to decontaminate the supergranulation contribution Lead Investigator: ======= Rafael A. Garc'ia, Instituto de Astrof'isica de Canarias, Spain, rgarcia@iac.es Team Members: ================== J. Patr'on, P. L. Pall'e, C. R'egulo and T. Roca Cort'es, Instituto de Astrof'isica de Canarias R. K. Ulrich (Open to colaborate with interested people) Local Coordinator: ================== Rick Bogart (or anybody you think is suitable) Lead Programmer: ===== Jim Aloise (or anybody you think is suitable) Technical Summary: ================== To analyze the low frequency solar oscillation spectra of the GOLF experiment by minimazing the effects of the supergranulation velocity field using the high resolution images from the MDI/SOI. Proposal Text: ======================= One of the most important goals for the helioseismic experiments onboard SOHO spacecraft is to find the g-modes. However, it is possible that the level of the background solar noise (Pall'e et al 1995) will be to high in this frequency range that the oscillations can not be seen directly. In this case, it will be necesary to correct from the supergranulation contribution which is the dominant velocity field at the region of interest. Several studies have been performed in that direction (Garc'ia et al 1993, Ulrich 1995). The idea of this proposal is to combine the high resolution images provided by MDI/SOI with the high stability GOLF measurements to produce a new data sets with a minimized contribution of the supergranulation to the power velocity spectra. See Also: ========= -Pall'e et al. 1995, ApJ. 441:952 -Garc'ia et al. 1993, Proceedings of the Vth IRIS workshop and GOLF'93 annual meeting, 39 -Ulrich, R. K., 1995 GOLF & VIRGO annual meeting.