Quasars and gravitational lenses.


Despite the expenditure of large amounts of telescope time and other resources, most of the fundamental questions concerning quasi-stellar objects (quasars) remain unanswered. A complex phenomenology of radio, infrared, optical, and x-ray properties has accumulated but has not yielded even a satisfactory classification system. The large red shifts… (More)


Cite this paper

@article{Turner1984QuasarsAG, title={Quasars and gravitational lenses.}, author={Eric L. Turner}, journal={Science}, year={1984}, volume={223 4642}, pages={1255-9} }