ball1.gif ATCA

Subrahmanyan et al. (1998 [ATCA1], 2000 [ATCA2]) use 8.7 GHz data from the ground-based ATCA (Australia Telescope Compact Array) experiment, in conjunction with foreground contamination data, to constrain CMBR anisotropy.

The window function was provided by R. Subrahmanyan. The first column in the window function file is $\ell$, which runs from 2 to 9999. The second and third columns are the ATCA1 and ATCA2 zero-lag $W_\ell$'s.


Table: ATCA zero-lag Window Function Parameters
  $\ell_{e^{-0.5}}$ $\ell_{\rm e}$ $\ell_{\rm m}$ $\ell_{e^{-0.5}}$ $\sqrt{I(W_\ell)}$
ATCA1 3525 4367.7 4677 5847 0.565
ATCA2 3734 4568.0 4906 6004 0.545

The quoted bandtemperature values are from Subrahmanyan et al. (1998, 2000). They were computed assuming a flat bandpower spectrum.

Fig.: ATCA zero-lag window functions. (Postscript version here.) win_ATCA.gif

REFERENCES

ball23.gifLink to the experiment webpage.

R. Subrahmanyan, M.J. Kesteven, R.D. Ekers, M. Sinclair, and J. Silk, ``The Australia Telescope Search for Cosmic Microwave Background Anisotropy", MNRAS 298, 1189 (1998).

R. Subrahmanyan, M.J. Kesteven, R.D. Ekers, M. Sinclair, and J. Silk, ``An Australia Telescope Survey for CMB Anisotropies",astro-ph/0002467.


Bharat Ratra and Tarun Souradeep
Department of Physics, Kansas State University
Last updated: 2000-08-31