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Structure in Galaxy Distribution. III. Fourier Transforming the Universe
Jeffrey D. Scargle, Michael Way, Paul Gazis
We demonstrate the effectiveness of a relatively straightforward analysis of the complex 3D Fourier transform of galaxy coordinates derived from redshift surveys. Numerical demonst…
Structure in the 3D Galaxy Distribution: II. Voids and Watersheds of Local Maxima and Minima
M. J. Way, P. R. Gazis, Jeffrey D. Scargle
The major uncertainties in studies of the multi-scale structure of the Universe arise not from observational errors but from the variety of legitimate definitions and detection met…
Structure in the 3D Galaxy Distribution: I. Methods and Example Results
M. J. Way, P. R. Gazis, Jeffrey D. Scargle
Three methods for detecting and characterizing structure in point data, such as that generated by redshift surveys, are described: classification using self-organizing maps, segmen…