ball1.gif Saskatoon 1995

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

The window functions were provided by B. Netterfield. There are three files,the two with NCP cap window function (c1 &c2) and one with the NCP ring window function. The first column in each window function file is $\ell$, which runs from 2 to 699. The last nine columns in the first cap file are the zero-lag $W_\ell$'s for the 3, 4, ..., 11 point chops. The last eight columns in the second cap file are the zero-lag $W_\ell$'s for the 12, 13, ..., 19 point chops. The last four columns in the ring file are the zero-lag $W_\ell$'s for the 3, 4, 5, and 6 point chops.


Table: Saskatoon 1995 Cap zero-lag Window Function Parameters
  $\ell_{e^{-0.5}}$ $\ell_{\rm e}$ $\ell_{\rm m}$ $\ell_{e^{-0.5}}$ $\sqrt{I(W_\ell)}$
3pt 37 63.7 54 76 1.28
4pt 54 83.0 73 96 1.02
5pt 76 107.9 94 115 0.809
6pt 97 135.0 117 141 0.754
7pt 119 157.5 140 165 0.666
8pt 140 177.6 160 184 0.594
9pt 159 197.2 180 204 0.543
10pt 178 216.8 199 222 0.496
11pt 199 236.6 220 244 0.461
12pt 221 257.0 241 265 0.425
13pt 241 277.1 262 286 0.398
14pt 263 297.1 283 307 0.371
15pt 282 316.0 302 326 0.352
16pt 301 333.5 322 345 0.334
17pt 325 357.4 346 369 0.312
18pt 352 382.3 371 393 0.288
19pt 374 403.6 394 416 0.274

Fig.: First set of Saskatoon 1995 Cap zero-lag window functions. (Postscript version here.) win_Saskatoon95c1.gif
Fig.: Second set of Saskatoon95 Cap zero-lag window functions. (Postscript version here.) win_Saskatoon95c2.gif

Table: Saskatoon 1995 Ring zero-lag Window Function Parameters
  $\ell_{e^{-0.5}}$ $\ell_{\rm e}$ $\ell_{\rm m}$ $\ell_{e^{-0.5}}$ $\sqrt{I(W_\ell)}$
3pt 115 169.7 171 236 1.13
4pt 182 234.2 237 301 0.852
5pt 247 286.4 302 365 0.702
6pt 315 331.9 369 431 0.585

Fig.: Saskatoon 1995 Ring zero-lag window functions. (Postscript version here.) win_Saskatoon95r.gif

The quoted bandtemperature values are computed for a flat bandpower spectrum. They are from Netterfield et al., 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.

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).

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