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arXiv · 1110.0396

Calibrating 15 years of GOLF data

Guy R. Davies·Rafael A. García
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Abstract

The GOLF resonant scattering spectrophotometer aboard SoHO has now provided 15 years of continuous high precision Sun-as-a-star radial-velocity measurements. This length of time series provides very high resolution in the frequency domain and is combined with very good long-term instrumental stability. These are the requirements for measuring the low-l low-frequency global oscillations of the Sun that will unlock the secrets of the solar core. However, before the scientifically interesting gravity and mixed modes of oscillation fully reveal themselves, a correction and calibration of the whole data set is required. Here we present work towards producing a 15 year GOLF data set corrected for instrumental ageing and thermal variation.

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Guy R. Davies, Rafael A. García. 2011-10-03. Calibrating 15 years of GOLF data. https://arxiv.org/abs/1110.0396

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