Bibcode
Rajguru, Nutan; Myers, Steven T.; Battye, Richard A.; Bond, J. Richard; Cleary, Kieran; Contaldi, Carlo R.; Davies, Rod D.; Davis, Richard J.; Dickinson, Clive; Genova-Santos, Ricardo; Grainge, Keith; Hafez, Yaser A.; Hobson, Michael P.; Jones, Michael E.; Kneissl, Rüdiger; Lancaster, Katy; Lasenby, Anthony; Mason, Brian S.; Pearson, Timothy J.; Pooley, Guy G.; Readhead, Anthony C. S.; Rebolo, Rafael; Rocha, Graca; Rubiño-Martin, J. A.; Saunders, Richard D. E.; Savage, Richard S.; Scaife, Anna; Scott, Paul F.; Sievers, Jonathan L.; Slosar, Anže; Taylor, Angela C.; Titterington, David; Waldram, Elizabeth; Watson, Robert A.; Wilkinson, Althea
Bibliographical reference
Monthly Notices of the Royal Astronomical Society, Volume 363, Issue 4, pp. 1125-1135.
Advertised on:
11
2005
Citations
8
Refereed citations
6
Description
We present coincident observations of the cosmic microwave background
(CMB) from the Very Small Array (VSA) and Cosmic Background Imager (CBI)
telescopes. The consistency of the full data sets is tested in the map
plane and the Fourier plane, prior to the usual compression of CMB data
into flat bandpowers. Of the three mosaics observed by each group, two
are found to be in excellent agreement. In the third mosaic, there is a
2σ discrepancy between the correlation of the data and the level
expected from Monte Carlo simulations. This is shown to be consistent
with increased phase calibration errors on VSA data during summer
observations. We also consider the parameter estimation method of each
group. The key difference is the use of the variance window function in
place of the bandpower window function, an approximation used by the VSA
group. A re-evaluation of the VSA parameter estimates, using bandpower
windows, shows that the two methods yield consistent results.