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Sub-Luminal Motions in the Nucleus of M 87
Published online by Cambridge University Press: 04 August 2017
Extract
We have observed the nucleus of the elliptical galaxy M87 with VLBI arrays at 18 cm wavelength at two epochs separated by about two years. The results of the first epoch observations taken at 1980.12 are described in detail by Reid et al (1982, Ap. J. 263, pp 615-623). They indicated that the nucleus of M87 exhibited a highly asymmetric emission pattern with a bright “core” and long, thin “jet” extending for more than 0.05 arcsec towards the 20 arcsec jet seen in radio, optical, and X-ray radiation. This morphology is remarkably similar to that seen in the quasar 3C273. Asymmetric core-jet structures, possibly coupled with super-luminal motions as in 3C273, have been interpreted in the framework of relativistic beaming models (cf. Blandford, McKee, and Rees: 1977, Nature 267, pp 211–216). Therefore, we conducted second epoch observations of M87 at 1982.27 to look for such motions.
- Type
- Research Article
- Information
- Symposium - International Astronomical Union , Volume 110: VLBI and Compact Radio Sources , 1984 , pp. 145 - 146
- Copyright
- Copyright © Reidel 1984