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The Spectral Index — Flux Density Relation and the Cosmological Evolution of Radio Sources

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Structure and Evolution of Active Galactic Nuclei

Part of the book series: Astrophysics and Space Science Library ((ASSL,volume 121))

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Abstract

A careful redetermination of the α-S relation for radio sources selected from metre-wavelengths surveys does not show any significant flattening of αmedian below S408 ~ 1 Jy contrary to earlier claims. Constraints on evolutionary models of the luminosity function are briefly discussed.

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References

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Author information

Authors and Affiliations

  1. T.I.F.R Centre, Post Box 1234, Bangalore, 560 012, India

    V. K. Kapahi

  2. Radio Astronomy Centre, Post Box 8, Ootacamund, 643 001, India

    V. K. Kulkarni

Authors
  1. V. K. Kapahi
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  2. V. K. Kulkarni
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Editor information

Editors and Affiliations

  1. Dipartimento di Astronomia, Università degli Studi di Trieste, Italy

    G. Giuricin , M. Mezzetti  & M. Ramella ,  & 

  2. Osservatorio Astronomico di Trieste, Italy

    F. Mardirossian

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© 1986 Springer Science+Business Media Dordrecht

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Kapahi, V.K., Kulkarni, V.K. (1986). The Spectral Index — Flux Density Relation and the Cosmological Evolution of Radio Sources. In: Giuricin, G., Mardirossian, F., Mezzetti, M., Ramella, M. (eds) Structure and Evolution of Active Galactic Nuclei. Astrophysics and Space Science Library, vol 121. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-4562-3_51

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  • DOI: https://doi.org/10.1007/978-94-009-4562-3_51

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-010-8528-1

  • Online ISBN: 978-94-009-4562-3

  • eBook Packages: Springer Book Archive

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