Analysis of the large scale structure with deep pencil beam surveys

Details Analysis of the large scale structure with deep pencil beam surveys Analysis of the large scale structure with deep pencil beam surveys

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aipc..222..261s&link_type=abstract

After the first three minutes. AIP Conference Proceedings, Volume 222, pp. 261-275 (1991).

Computer Science

16

Observational Cosmology

Scientific paper

Recent observations of the large scale structure of the universe suggest inhomogeneities on scales larger than previously thought. A deep redshift survey with a `pencil beam' geometry of galaxies at the Galactic Poles indicates strong clustering, with a provocative regularity on a scale exceeding 100 h-1 Mpc. We examine in detail the role of such deep `pencil beam' surveys in studies of the large scale structure using the 1-D power spectrum of the distribution to illustrate the statistical significance of the feature claimed by Broadhurst et al (1990). We demonstrate how deep probes complement sparse-sampled wide angle local surveys providing new information on large scales. To test the results found from our original survey, we examine future sampling strategies that would delineate the topology more clearly and briefly discuss the implications of such results in theories accounting for the origin of structure. We quantify the sensitivity of pencil beam surveys to the topology of large-scale structures and compare them to sparse sampled wide-angle l ocal surveys. In particular, we also present a more detailed statistical analysis for the Galactic Pole data set, and show that it remains significant at the 2×10-4 level.

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