Gravitational Lensing: Proceedings of a Workshop Held in Toulouse, France September 13–15, 1989

Pictures of gravitational lensing....Pages 1-12
Determination of cosmological parameters by the gravitational lens effect....Pages 13-15
Cosmic gravitational diagnostics....Pages 16-28
Gravitational redshifts and lensing by large scale structures....Pages 29-38
What the present observed lens systems tell about the lensing agent....Pages 39-45
Gravitational lens models with elliptical geometry....Pages 46-48
Amplification near a gravitational lens macro-caustic....Pages 49-50
Statistics of lensing on extended sources....Pages 51-53
Observational aspects of gravitational lensing....Pages 55-72
Quasar-galaxy associations....Pages 73-82
A search for gravitational lensing among highly luminous quasars : observational strategy and survey....Pages 83-87
A search for gravitational lensing among highly luminous quasars: new results....Pages 88-92
Gravitational magnification effects on distant 3CR galaxies....Pages 93-95
0957+561: The time delay revisited....Pages 96-101
The time delay of Q0957-+-561 A,B from 10 years of optical monitoring....Pages 102-107
Application of image processing techniques in a search for gravitational lenses and quasar pairs....Pages 108-110
A search for gravitational lenses and quasar pairs and the discovery of a new multiple QSO system....Pages 111-116
Evolution and gravitational lensing in quasar absorption line systems....Pages 117-121
Preliminary analysis of high-resolution spectra for UM 673 A & B....Pages 122-123
Bidimensional spectrography of the “clover leaf” H1413+117 at sub-arcsec. Spatial resolution....Pages 124-126
The MIT search program for gravitational lenses....Pages 127-135
First epoch VLBI observations of the gravitational lens system 2016+112....Pages 136-140
X-ray observations of gravitational lenses....Pages 141-162
Consequences of gravitational lensing for gamma radiation from 3C273....Pages 163-165
Searching for cosmic strings (A la recherche des cordes perdues)....Pages 166-171
Microlensing....Pages 173-185
Microlensing calculations with a hierarchical tree code: New results....Pages 186-191
Statistical investigations of the amplification near gravitational lens caustics....Pages 192-197
The deconvolution of the quasar structure from the lightcurve of a high amplification event with the regularisation method....Pages 198-202
The Hamburg quasar monitoring program at Calar Alto: Analyses of micro-lensing variability....Pages 203-205
Photometric monitoring of 2237+0305....Pages 206-209
Spectrophotometry of 0957+561 and the micro-lensing effect....Pages 210-215
IR imaging and the light curve of 2237+030....Pages 216-217
Clusters of galaxies: A new observable class of gravitational lenses....Pages 219-229
Lensing the background population of galaxies....Pages 230-235
The redshift distribution of faint galaxies — Implications for gravitational lensing....Pages 236-243
The theory and practice of radio ring lenses....Pages 244-253
Lens and source models for ARCS in cluster Abell 370 and Cl 2244....Pages 254-260
Modeling the giant arcs in A370 and A2390....Pages 261-270
New results from the gravitational telescope....Pages 271-274
Probing rich galaxy clusters with mini-arcs....Pages 275-279
Gravitationally lensed arcs as galaxy redshift indicators....Pages 280-283
Spatial correlation in gravitationally lensed images....Pages 284-287
Optical-infrared studies of arcs in Abell 370....Pages 288-290
Spectroscopy of arcs in Cl2244-02 and A370 (A5)....Pages 291-292
First results on the spectroscopy of the arc-like object in Abell 2390....Pages 293-294
Deep photometry of C1.2244-02 in U colour with an electronographic camera....Pages 295-297
Concluding remarks....Pages 299-308
Gravitational lens candidates....Pages 309-315