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Impact of low-frequency p modes on the inversions of the internal rotation of the Sun
D. Salabert, A. Eff-Darwich, R. Howe +1
We used the m-averaged spectrum technique ("collapsogram") to extract the low-frequency solar p-mode parameters of low- and intermediate-angular degrees (l \leq 35) in long time se…
First performances of the GOLF-NG instrumental prototype observing the Sun in Tenerife
D. Salabert, S. Turck-Chieze, J. C. Barriere +14
The primary challenge of GOLF-NG (Global Oscillations at Low Frequency New Generation) is the detection of the low-frequency solar gravity and acoustic modes, as well as the possib…
Low-frequency solar p modes as seen by GOLF and GONG instruments
D. Salabert, R. A. Garcia
In the case of spatially-revolved helioseismic data (such as MDI, GONG, HMI), the usual mode-fitting analysis consists of fitting the 2l+1 individual m-spectra of a given multiplet…
Variation in p-mode power over solar cycle 23 as seen from BiSON and GOLF observations
R. Simoniello, D. Salabert, R. A. Garcia
We analyzed BiSON and GOLF/SoHO data with a new technique, to investigate p-mode power variation over solar cycle 23. We found a decrease in the mean velocity power of about 20% fo…
solarFLAG hare and hounds: estimation of p-mode frequencies from Sun-as-star helioseismology data
S. J. Jimenez-Reyes, W. J. Chaplin, R. A. Garcia +14
We report on the results of the latest solarFLAG hare-and-hounds exercise, which was concerned with testing methods for extraction of frequencies of low-degree solar p modes from d…
AsteroFLAG: first results from hare-and-hounds Exercise 1
W. J. Chaplin, T. Appourchaux, T. Arentoft +15
We report on initial results from the first phase of Exercise 1 of the asteroFLAG hare and hounds. The asteroFLAG group is helping to prepare for the asteroseismology component of…
Development of a new analysis technique to measure low radial-order p modes in spatially-resolved helioseismic data
David Salabert, John W. Leibacher, Thierry Appourchaux
In order to take full advantage of the long time series collected by the GONG and MDI helioseismic projects, we present here an adaptation of the rotation-corrected -averaged sp…
Sun-as-a-star observations: evidence for degree dependence of changes in damping of low-l p modes along the solar cycle
D. Salabert, W. J. Chaplin, Y. Elsworth +2
We use 9.5-yr of BiSON Sun-as-a-star data to search for dependence of solar-cycle parameter changes on the angular degree, l, of the data. The nature of the Sun-as-a-star observati…
Damping and excitation variations of the solar acoustic modes using LOWL observations
D. Salabert, S. J. Jiménez-Reyes
We have used observations made with the helioseismic instrument LOWL collected over 6 years to carry out an independent study of the variations of the p-mode damping and exc…
solarFLAG hare and hounds: on the extraction of rotational p-mode splittings from seismic, Sun-as-a-star data
W. J. Chaplin, T. Appourchaux, F. Baudin +18
We report on results from the first solar Fitting at Low-Angular degree Group (solar FLAG) hare-and-hounds exercise. The group is concerned with the development of methods for extr…