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A WSRT search for HI at z=3.35

Published online by Cambridge University Press:  03 August 2017

A.G. de Bruyn ,
M.H. Wieringa ,
P. Katgert  and
R. Sancisi
A.G. de Bruyn
Affiliation:
Netherlands Foundation for Radio Astronomy, Dwingeloo
M.H. Wieringa
Affiliation:
Leiden Observatory
P. Katgert
Affiliation:
Leiden Observatory
R. Sancisi
Affiliation:
Kapteyn Laboratory, Groningen

Extract

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The origin and evolution of the large-scale structures in the universe (from galaxies up to superclusters) forms one of the outstanding problems of present-day cosmology. Several attempts have been made to observe the precursors of the structures observed today, at epochs as early as possible. Results of a search for redshifted HI associated with “protoclusters” or “pancakes” were first reported by Davies et al. (1978). They used the Jodrell Bank Mark 1A-telescope at frequencies of 328 and 240 MHz (z=3.3 and 4.9 respectively). More recently Bebbington (1986) used the Cambridge 6C synthesis radio telescope for a search at 151 MHz (z=8.4). Both experiments gave negative results and raised the question whether the observations were matched to the “expected” properties of the structures that they looked for.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 130: Large Scale Structures of the Universe , 1988 , pp. 211 - 213
Copyright
Copyright © Reidel 1988 

References

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