Tucker et al. use 3.1-9.2 cm data from the balloon-borne BAM
(Balloon-borne Anisotropy Measurement) experiment to constrain CMBR
anisotropy.

The FWHM of the beam, assumed to be gaussian, is
. The zero-lag window function of the two-beam experiment is

where , is a Legendre polynomial of order , and is half of the peak-to-peak chop angle.

The first column in the window function file
is , which runs from
2 to 600. The second column is .

The quoted bandtemperature values are from Tucker et al., with 20% added
in quadrature to their statistical 1 error bars to account for the
BAM 1 calibration uncertainty.

**Link to the experiment webpage.**

G.S. Tucker, H.P. Gush, M. Halpern, I. Shinkoda, and W. Towlson,
``Anisotropy in the Microwave Sky: Results from the First Flight of the
Balloon-Borne Anisotropy Measurement (BAM)", *Astrophys. J. Lett.*
**475**, L73 (1997).

Department of Physics, Kansas State University

Last updated: 2000-08-31