Background solar irradiance spectrum at high and low phases of the solar activity cycle

Vázquez Ramió, H.; Roca-Cortés, T.; Régulo, C.
Referencia bibliográfica

In: Solar variability: from core to outer frontiers. The 10th European Solar Physics Meeting, 9 - 14 September 2002, Prague, Czech Republic. Ed. A. Wilson. ESA SP-506, Vol. 2. Noordwijk: ESA Publications Division, ISBN 92-9092-816-6, 2002, p. 897 - 900

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Two data series of disk integrated solar irradiance, taken by the Variability of the solar IRradiance and Gravity Oscillations (VIRGO) experiment on board the Solar and Heliospheric Observatory (SoHO) mission, corresponding to epochs of minimum and maximum solar activity have been analysed in order to study the background signal of the associated power spectra. We fit the most apparent convective structures that appear at low frequencies in the spectrum as well as non-periodic components. We aim to compare the results found in the three observed bands (centered in λ=402nm, λ=500nm and λ=862nm) as well as to find dependences of the non-periodic convective structures parameters with the solar cycle.