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Spectral analysis of the large-scale radio emission of M 87

  • H. Rottmann
  • N. Kassim
  • K.-H. Mack
  • U. Klein
  • R. Perley
Conference paper
Part of the Lecture Notes in Physics book series (LNP, volume 530)

Abstract

We present first results from a spectral analysis of the outer radio halo of M 87. Radio observations at 4 frequencies (333 MHz, 1.6 GHz, 4.8 GHz and 10.55 GHz) have been used to construct spectral index and break frequency distributions. Implications on the possible mechanisms for the formation of the halo are discussed.

Keywords

Spectral Index Break Frequency Radio Observation Flat Spectrum Outer Lobe 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 1999

Authors and Affiliations

  • H. Rottmann
    • 1
    • 2
  • N. Kassim
    • 3
  • K.-H. Mack
    • 4
    • 2
  • U. Klein
    • 2
  • R. Perley
    • 5
  1. 1.Max-Planck-Institut für RadioastronomieBonnGermany
  2. 2.Radioastronomisches Institut der Universität BonnBonnGermany
  3. 3.Remote Sensing DivisionNaval Research LaboratoryWashington, DCUSA
  4. 4.Istituto di Radioastronomia del CNRBolognaItaly
  5. 5.National Radio Astronomy ObservatorySocorroUSA

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