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Article
A counterjet in the elliptical galaxy M87
JETS in radio galaxies have a variety of observed morphologies, in particular appearing in both one-sided and two-sided forms. It is not known whether jets can be intrinsically one-sided, or if the one-sided a...
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Article
Absorption lines in the optical spectrum of quasar AO0827+24
IN January 1977 the radio source AO0827+24 (ref. 1) was observed at 90 GHz by F. Owen, S. Mufson, R. Porcas and T. Moffett with the NRAO 36-foot antenna at Kitt Peak, during observations of several flat spectr...
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Article
Another major change in the radio source associated with Cyg X-1
THE sudden appearance1,2 of a faint radio source inside the probable position region for the X-ray source Cyg X-1 was associated with major changes in the X-ray emission observed3 during the period February–May 1...