VIRGO: The solar monitor experiment on SOHO

Froehlich, C.; Andersen, Bo Nyborg; Berthomieu, G.; Crommelynck, D.; Delache, Philippe; Domingo, V.; Jimenez, A.; Jones, A. R.; Roca Cortés, Teodoro; Wehrli, Ch.
Referencia bibliográfica

In ESA, Seismology of the Sun and Sun-Like Stars p 371-374 (SEE N89-25819 19-92)

Fecha de publicación:
12
1988
Número de autores
10
Número de autores del IAC
0
Número de citas
2
Número de citas referidas
2
Descripción
The VIRGO Experiment (Variability of solar IRradiance and Gravity Oscillations) contains two types of active cavity radiometers for monitoring of the solar constant, two three-channel Sun photometers 335, 500, and 865 nm, and a low resolution imager (LOI) with 12 pixels. The main scientific objective is probing the solar interior by helioseismology with p- and g-mode solar oscillations determined from spectral irradiance (SPM) and radiance (LOI) variations on time scales of minutes to the mission time. The measurements of the variability of the solar constant and spectral irradiance over periods of days to the mission time will yield information about the convection zone, as will the comparison of the amplitudes and phases of the oscillations as manifested in irradiance and radiance (from VIRGO) and velocity (from GOLF and SOI).