A model to interpret the intensity-velocity and velocity-velocity phase differences from solar observations obtained with magneto-optical filters
INAF, Osservatorio Astronomico di Capodimonte, via Moiarello 16, 80131 Napoli, Italy
Corresponding author: P. F. Moretti, email@example.com
Accepted: 16 February 2004
The intensity (I) and velocity (V) signals obtained using magneto-optical filters (MOF), are not independent of each other. The induced spurious signals affect the intensity-velocity phase difference measurements and the effect is referred to as a crosstalk (Moretti & Severino [CITE]). We show a new model to interpret the phase measurements and, in particular, its application to the interpretation of the data obtained with sodium MOF systems. The model can also be applied to correct the velocity-velocity phase from multi layer observations.
Key words: Sun: oscillations / instrumentation: miscellaneous
© ESO, 2004