ball1.gif Saskatoon 1994

Netterfield et al. (1995) use Ka band (centered on 30 GHz) and Q band (centered on 40 GHz) data from the ground-based Saskatoon 1994 experiment at Saskatoon to constrain CMBR anisotropy.

The window functions were provided by B. Netterfield. There are two files, one with the Ka window functions and one with the Q window functions. The first column in each window function file is $\ell$, which runs from 2 to 499. The next seven columns in each file are the zero-lag $W_\ell$'s for the 3, 4, ..., 9 point chops. Some of the $W_\ell$ values in these files are negative, due to numerical round-off errors. To deal with this, it suffices, for all practical purposes, to use $\vert W_\ell\vert$ instead of $W_\ell$ tabulated in these files.


Table: Saskatoon 1994 zero-lag Window Function Parameters
  $\ell_{e^{-0.5}}$ $\ell_{\rm e}$ $\ell_{\rm m}$ $\ell_{e^{-0.5}}$ $\sqrt{I(W_\ell)}$
Ka3 37 55.8 55 76 1.15
Q3 37 59.4 55 76 1.22
Ka4 57 76.5 75 96 0.881
Q4 57 80.6 75 97 0.930
Ka5 76 96.0 95 116 0.727
Q5 76 100.4 95 117 0.772
Ka6 95 115.2 115 136 0.620
Q6 95 119.7 115 136 0.665
Ka7 115 133.8 134 155 0.542
Q7 115 138.6 134 156 0.586
Ka8 134 152.3 153 175 0.481
Q8 134 157.4 154 176 0.524
Ka9 153 170.0 173 194 0.432
Q9 153 176.0 173 195 0.474

The quoted bandtemperature values are computed for a flat bandpower spectrum. They are from Netterfield et al. (1997), corrected according to the caption of Figure 3 of Torbet et al. (to account for re-calibration and foreground contamination), with 11% added in quadrature to their statistical 1 $\sigma$ error bars to account for the 1 $\sigma$ calibration uncertainty.

Fig.: Saskatoon 1994-Ka zero-lag window functions. (Postscript version here.) win_Saskatoon94-Ka.gif

Fig.: Saskatoon 1994-Q zero-lag window functions. (Postscript version here.) win_Saskatoon94-Q.gif

REFERENCES

ball23.gifLink to the experiment webpage.

C.B. Netterfield, M.J. Devlin, N. Jarosik, L. Page, and E.J. Wollack, ``A Measurement of the Angular Power Spectrum of the Anisotropy in the Cosmic Microwave Background",Astrophys. J. 474, 47 (1997).

C.B. Netterfield, N. Jarosik, L. Page, D. Wilkinson, and E. Wollack, ``The Anisotropy in the Cosmic Microwave Background at Degree Angular Scales", Astrophys. J. Lett. 445, L69 (1995).

E. Torbet, et al., ``A Measurement of the Angular Power Spectrum of the Microwave Background Made from the High Chilean Andes", astro-ph/9905100 v3.


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