Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999a%26a...345.1027r&link_type=abstract
Astronomy and Astrophysics, v.345, p.1027-1037 (1999)
Astronomy and Astrophysics
Astrophysics
12
Sun: Oscillations, Methods: Data Analysis, Methods: Observational
Scientific paper
Low-degree solar p modes observed by the GONG network have been analysed for l <= 6, yielding accurate measurements of their frequencies, splittings and linewidths. The results obtained here show significant improvement on previous determinations, especially for increasing the number of identified modes with l <= 3 and for minimizing the bias on the splitting determination and the error bars. A more realistic approach was used to fit the helioseismic data assuming that the observed spectra are statistically dependent upon one another. This is in contrast to what is commonly done and the result is a better treatment of the leakage between the modes. Moreover, the effect of an imperfect knowledge of the leakage within the elements of the l=1 multiplets upon their splitting determination is analysed. In addition, the effect of the leakage between the modes of different degrees upon the p-mode parameters determination is shown, and a procedure for `cleaning' the spatial alias is described leading to splitting coefficients with smaller systematic errors than before.
Appourchaux Thierry
Rabello-Soares Maria Cristina
No associations
LandOfFree
Solar low-degree p-mode parameters from the GONG network 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 Solar low-degree p-mode parameters from the GONG network, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solar low-degree p-mode parameters from the GONG network will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1119381