A VLA gravitational lens surveyA 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.
Document ID
19880042442
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Hewitt, J. N. (MIT, Cambridge; Haystack Observatory, Westford MA, United States)
Turner, E. L. (Princeton University NJ, United States)
Burke, B. F. (MIT Cambridge, MA, United States)
Lawrence, C. R. (California Institute of Technology Pasadena, United States)
Bennett, C. L. (NASA Goddard Space Flight Center Greenbelt, MD, United States)