ball1.gif QMAP

Devlin et al. (QMAP I) and Herbig et al. (QMAP II) use Ka band (centered on 30 GHz) and Q band (centered on 40 GHz) data from the balloon-borne QMAP 1996 flights to constrain CMBR anisotropy.

The window function file were provided by L. Page. The first column in the window function file is $\ell$, which runs from 2 to 500. The next two columns are the QMAP I Ka and Q zero-lag $W_\ell$'s while the last three columns are the QMAP II Ka1, Ka2, and Q zero-lag $W_\ell$'s.


Table: QMAP zero-lag Window Function Parameters
  $\ell_{e^{-0.5}}$ $\ell_{\rm e}$ $\ell_{\rm m}$ $\ell_{e^{-0.5}}$ $\sqrt{I(W_\ell)}$
QMAP I Ka 56 92.0 107 159 0.996
QMAP I Q 43 83.7 88 146 0.996
QMAP II Ka1 60 91.1 122 165 0.996
QMAP II Ka2 141 145.2 184 224 0.997
QMAP II Q 76 125.4 148 228 0.997

The quoted bandtemperature values are computed for a flat bandpower spectrum. They are from Devlin et al. and Herbig et al., with the Ka results corrected to account for foreground contamination (following de Oliveira-Costa et al.), with 11%(12%) added in quadrature to their statistical 1 $\sigma$ error bars to account for the 1 $\sigma$ I Ka and II Q (I Q and II Ka) calibration uncertainty.

Fig.: QMAP zero-lag window functions. (Postscript version here.) win_QMAP-IandII.gif

REFERENCES

ball22.gifball23.gifLinks to the experiment webpages.

A. de Oliveira-Costa, et al., ``Galactic Contamination in the QMAP Experiment", astro-ph/0003090v2.

M.J. Devlin, A. de Oliveira-Costa, T. Herbig, A.D. Miller, C.B. Netterfield, L.A. Page, and M. Tegmark, ``Mapping the Cosmic Microwave Background Anisotropy: The First Flight of the QMAP Experiment", Astrophys. J. Lett. 509, L69 (1998).

T. Herbig, A. de Oliveira-Costa, M.J. Devlin, A.D. Miller, L.A. Page, and M. Tegmark, ``Mapping the Cosmic Microwave Background Anisotropy: The Second Flight of the QMAP Experiment", Astrophys. J. Lett. 509, L73 (1998).


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