Publicly available data - released May 2002
The original results were released in May 2002. Click Here
to download the latest results.
The compact array full power spectrum:
VSA-0204.tar.gz
This data has been formatted so that the input file can be used in
Antony Lewis's cosmomc
program. There are ten data points, corresponding to the final power
spectrum.
The format of the full dataset is ASCII and simple. The units are
microK^2.
VSA.dataset is a self-explanatory root file. There is no beam
uncertainity for VSA data and the overall calibration uncertainity is
7%. After the header, there are ten data points corresponding to the
peak of the likelihood of the power spectrum.
VSA_x.dat The x-factors for the VSA dataset (as explained in astro-ph/9808264, for
example).
VSA_matrix.dat is the Hessian matrix of the VSA dataset in the
log-offset variables. 10^2=100 numbers are given. Because the matrix is
symmetric, the order does not matter.
The chi^2 is given by
where B_i are theoretical bandpowers, x_i are the x-factors
and O_i are the observed powers in the offset-log-normal variables
(O_i=log(O_i0+x_i))
(Note that the values for the 9th bin and covariances were
wrong in the first version of the paper - now correct in this version, and the corrected version
is now on astro-ph.)
windows/VSA* are 10 files with window functions corresponding
to datapoints. Each window file has two columns, the l value and the
corresponding weight.
Please contact Anze Slosar for
any queries regarding the interpretation of the above numbers.
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Last Modified 17 Jan 2003
Webpage Administrator.