NASA NTRS · 19880042442
A VLA gravitational lens survey
Abstract
A VLA survey designed to detect gravitational lensing on sub-arc second and arc second scales is described, and preliminary results of radio data are presented. In particular, it is found that the density of matter in the form of a uniform comoving number density of 10 to the 11th - 10 to the 12th solar mass compact objects, luminous or dark, must be substantially less than the critical density. Data obtained for the radio source 1042+178 are briefly examined.
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Hewitt, J. N., Turner, E. L., Burke, B. F., Lawrence, C. R., Bennett, C. L.. 1987-01-01. A VLA gravitational lens survey. https://ntrs.nasa.gov/citations/19880042442
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