ball1.gif Tenerife

Gutiérrez et al. use 10 and 15 GHz data from the ground-based Tenerife experiment, in conjunction with diffuse foreground galactic contamination data, to constrain CMBR anisotropy.

The FWHM of the beam, assumed to be gaussian, is $\sigma_{\rm FWHM} =
5.1^\circ$. The zero-lag window function of the three-beam experiment is

W_\ell = e^{-\sigma_{\rm G}{}^2 (\ell + 0.5)^2}
[1.5 - 2 P...
...m cos}(\Phi_0)) + 0.5 P_\ell ({\rm cos}(2\Phi_0))] ,

where $\sigma_{\rm G} = \sigma_{\rm FWHM}/\sqrt{8 {\rm ln} 2}$, $P_\ell$ is a Legendre polynomial of order $\ell$, and $\Phi_0 = 8.1^\circ$ is half of the peak-to-peak chop angle.

The first column in the window function file is $\ell$, which runs from 2 to 130. The second column is $W_\ell$.

Table: Tenerife zero-lag Window Function Parameters
$\ell_{e^{-0.5}}$ $\ell_{\rm e}$ $\ell_{\rm m}$ $\ell_{e^{-0.5}}$ $\sqrt{I(W_\ell)}$
14 20.1 21 29 1.02

The quoted bandtemperature values are from Gutiérrez et al., with 10% added in quadrature to their statistical 1 $\sigma$ error bars to account for the Tenerife 1 $\sigma$ calibration uncertainty.

Fig.: Tenerife zero-lag window functions. (Postscript version here.) win_Tenerife.gif


ball23.gifball22.gifLinks to the experiment webpages.

C.M. Gutiérrez, R. Rebolo, R.A. Watson, R.D. Davies, A.W. Jones, and A.N. Lasenby, ``The Tenerife Cosmic Microwave Background Maps: Observations and First Analysis", Astrophys. J. 529, 47 (2000).

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