Up: Determination of the
- Even in a worst-case foreground scenario the
PLANCK baseline is able to achieve an accuracy in the
measurement of CMBR fluctuations of
.
- The dynamic range is wide, meaning that even severe limitations
in our knowledge of the foreground parameters, at a given point in the
sky, will not affect the above stated accuracy.
- Increased knowledge of the foregrounds and exploitation of
the spatial correlations in the foregrounds will provide even better
results than those stated above. Using the results from spectral fitting
as shown here could be used as input for the optimal Wiener filtering
technique
outlined by Tegmark & Efstathiou (1996) to yield truly stunning results.
- The present PLANCK frequency band baseline is
optimal regarding both instrumental limitations, scientific objectives, which
are not just cosmological but also include the desire to map the sky and
especially the
Galaxy at hitherto unobserved frequencies and finally the need of
"spectral redundancy'' both in case of unexpected phenomena turning up and
in case of failure of one or more detectors.
Acknowledgements
We would like to thank Dr. Stephan S. Meyer from the University of
Chicago, and the members of the PLANCK Science Team for fruitful discussions.
Copyright by the European Southern Observatory (ESO)