Physics
Scientific paper
Oct 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997soph..175..207g&link_type=abstract
Solar Physics, Volume 175, Issue 2, pp.207-226
Physics
75
Scientific paper
GOLF in-flight commissioning and calibration was carried out during the first four months, most of which represented the cruise phase of SOHO towards its final L1 orbit. The initial performance of GOLF is shown to be within the design specification, for the entire instrument as well as for the separate sub-systems. Malfunctioning of the polarising mechanisms after 3 to 4 months operation has led to the adoption of an unplanned operating sequence in which these mechanisms are no longer used. This mode, which measures only the blue wing of the solar sodium lines, detracts little from the detection and frequency measurements of global oscillations, but does make more difficult the absolute velocity calibration, which is currently of the order of 20%. Data continuity in the new mode is extremely high and the instrument is producing exceptionally noise-free p-mode spectra. The data set is particularly well suited to the study of effects due to the excitation mechanism of the modes, leading to temporal variations in their amplitudes. The g modes have not yet been detected in this limited data set. In the present mode of operation, there are no indications of any degradation which would limit the use of GOLF for up to 6 years or more.
Basu Sarbani
Baudin Francois
Bertello Luca
Boumier Patrick
Charra J.
No associations
LandOfFree
Performance and Early Results from the GOLF Instrument Flown on the SOHO Mission does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Performance and Early Results from the GOLF Instrument Flown on the SOHO Mission, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Performance and Early Results from the GOLF Instrument Flown on the SOHO Mission will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1158010