Gravitational lenses : proceedings of a conference held at the Massachusetts Institute of Technology, Cambridge, Massachusetts, in honour of Bernard F. Burke's 60th birthday, June 20, 1988

Recollections of the career of Bernard Burke....Pages 3-8 0957+561: The unpublished story....Pages 11-22 History of gravitational lenses and the phenomena they produce....Pages 23-27 The versatile elliptical gravitational lens....Pages 31-37 Gravitational lens optics....Pages 38-52 Gravitational lensing of extended sources....Pages 53-58 Moving gravitational lenses....Pages 59-64 Explaining Burke and Shapiro to Newton....Pages 65-65 Recent optical observations of gravitational lenses....Pages 69-74 VLBI observations of gravitational lenses....Pages 75-76 VLBI phase reference mapping techniques and the search for the third image of 0957+561....Pages 77-81 First VLBI hybrid maps of 0957+561 A and B....Pages 82-83 VLA measurement of the time delay in the gravitationally lensed double quasar 0957+561....Pages 84-89 Optical determinations of the time delay in 0957+561....Pages 90-99 Resolution of galaxy and third image of gravitational lens 2016+112....Pages 100-105 Arcs in clusters of galaxies as gravitational lens images....Pages 109-126 A gravitational telescope in Abell 370: Indeed it works!....Pages 127-133 Observations of the blue arcs in Abell 963....Pages 134-139 Is the giant luminous arc due to lensing by a cosmic string?....Pages 140-143 Results of the VLA gravitational lens survey....Pages 147-158 Optical searches for gravitational lenses....Pages 159-172 An optical imaging survey for gravitational lenses and the discovery of a new lens candidate....Pages 173-178 Statistics of gravitational lenses: Galaxies and dark matter....Pages 179-187 Highly colinear radio sources and constraints on gravitational lens space density....Pages 188-191 Gravitational microlensing....Pages 195-205 Cosmic density estimate from microlensing....Pages 206-208 Micro-lensing model for QSO 2237+0305....Pages 209-215 A viable explanation for quasar-galaxy associations?....Pages 216-221 Reception photographs....Pages 223-231