The status of October 2001
The hare-hound exercise is not yet finishd but much work has been done already. Three simulated time series have been constructed by teams A,B,C, using theoretical frequencies of models of stars satisfying the constraints and introducing amplitudes and life times of the modes, stellar and instrumental noise accordint to the available litterature. Some inclination of the rotation axis relatively to the line of sight has also been introduced. These time serries have been named respectively:
The initial theoretical set of frequencies and the way the time series have been obtained will not be commented here, but at the end of the exercise.Nice-Toutain; Meudon-Appourchaux Roxburgh-Barban
The simulated time series have been analysed and, up to now four sets of frequencies have been extracted by each team named:
Let us note that two different sets of frequencies have been extracted from the same simulated time series. This will allow fruitful comparisons between data analysis methods. Different presentations concerning the way the sets have been obtained were given during the Corotweeks of September 2001.Meudon-Appourchaux-Toutain Meudon-Appourchaux-IAS Nice-Toutain-Appourchaux
As far as the interpretation of the set of frequencies in terms of internal structure and rotation of the star are concerned, some work has started and preliminary results were presented during the Corotweeks of September 2001.
In conclusion, this exercise has raised a lot of interest due to the fact that it is a good way to progress in preparing the analysis and interpretation of the future seismic COROT observations.
Last updated by Thierry
Appourchaux on October 29, 2001