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Gravitational Lenses

  • Conference paper
Extragalactic Radio Sources

Part of the book series: International Astronomical Union ((IAUS,volume 175))

Abstract

In approximately half the systems currently recognized as strongly gravitationally lensed, the background object is an extragalactic radio source. Radio observations have played an important role in the identification of lensed systems, and the properties of radio sources allow some of the astrophysical applications of lensing to be realized. High redshift galaxies can be studied through lens modeling and by observing more than one ray path through the lens. The morphological, spectral, and polarization information of high resolution radio images provides strong constraints on the mass distribution in the lensing galaxies. On cosmological scales, radio variability has been applied to the time delay measurement of angular diameter distance.

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Author information

Authors and Affiliations

  1. Department of Physics and Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts, 01239, USA

    J. N. Hewitt

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  1. J. N. Hewitt
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Editor information

Editors and Affiliations

  1. Australia Telescope, CSIRO, Epping, Australia

    R. Ekers

  2. Istituto di Radioastronomia, CNR, Bologna, Italy

    C. Fanti  & L. Padrielli  & 

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© 1996 International Astronomical Union

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Hewitt, J.N. (1996). Gravitational Lenses. In: Ekers, R., Fanti, C., Padrielli, L. (eds) Extragalactic Radio Sources. International Astronomical Union, vol 175. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-0295-4_43

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  • DOI: https://doi.org/10.1007/978-94-009-0295-4_43

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-0-7923-4122-2

  • Online ISBN: 978-94-009-0295-4

  • eBook Packages: Springer Book Archive

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