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Sensitivity of p modes for constraining velocities of microscopic diffusion of the elements
Orlagh L. Creevey, Savita Mathur, Rafael A. García
Conventional astrophysical observations have failed to provide stringent constraints on physical processes operating in the interior of the stars. However, satellite missions now p…
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…
What can we learn on the structure and the dynamics of the solar core with g modes?
S. Mathur, J. Ballot, A Eff-Darwich +4
The detection of the signature of dipole gravity modes has opened the path to study the solar inner radiative zone. Indeed, g modes should be the best probes to infer the propertie…
GOLF: a new proxy for solar magnetism
S. Mathur, S. J. Jimenez-Reyes, R. A. Garcia
Solar magnetism is measured with different indexes: for instance the MPSI and the MWSI, number of sunspots, radio flux at 10.7 cm, Ca II K, Mg II K, EUV, He I or L_alpha. Bachmann…
Spatial Cross Spectrum: Reducing Incoherent Convective Background of Resolved Heloseismic Instruments
R. A. Garcia, S. Mathur, I. Gonzalez Hernandez +1
Measurements of low-order p modes and gravity modes are perturbed by the solar convective background. Such perturbation increases below 2mHz for intensity measurements and 1mHz for…
Laboratory performances of the solar multichannel resonant scattering spectrometer prototype of the GOLF-New Generation instrument
S. Turck-Chieze, P. H. Carton, S. Mathur +8
This article quickly summarizes the performances and results of the GOLF/SoHO resonant spectrometer, thus justifying to go a step further. We then recall the characteristics of the…