**AAS 196th Meeting, June 2000**

*Session 6. Cosmology and Large Scale Structure*

Display, Monday, June 5, 2000, 9:20am-6:30pm, Empire Hall South
[Previous] |
[Session 6] |
[Next]

## [6.05] Correlations in the Spatial Power Spectrum Inferred from Angular Clustering

*D.J. Eisenstein (University of Chicago, IAS), M. Zaldarriaga (Institute for Advanced Study)*

We reconsider the inference of spatial power spectra from
angular clustering data and show how to include correlations
in both the angular correlation function and the spatial
power spectrum. We present a new inversion technique based
on singular value decomposition that allows one to propagate
the covariance matrix on the angular correlation function
through to that of the spatial power spectrum and to
reconstruct smooth power spectra without underestimating the
errors. We apply our methods to the angular correlations of
the APM galaxy survey and show that inclusion of the full
covariance matrices loosens the constraints on large-scale
structure by over a factor of two relative to previous work.

D.J.E. and M.Z. are supported by NASA/STScI Hubble
Fellowships.

[Previous] |
[Session 6] |
[Next]