The acoustic low-degree modes of the Sun measured with 14 years of continuous GOLF & VIRGO measurements
García, R. A.; Mathur, S.; Jiménez, A.; Ballot, J.; Salabert, D.; Sato, K.
France, Spain, United States
Abstract
The helioseismic Global Oscillation at Low Frequency (GOLF) and the Variability of solar Irradiance and Gravity Oscillations (VIRGO) instruments onboard SoHO, have been observing the Sun continuously for the last 14 years. In this preliminary work, we characterize the acoustic modes over the entire p-mode range in both, Doppler velocity and luminosity, with a special care for the low-frequency modes taking advantage of the stability and the high duty cycle of space observations.