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  1. No Access

    Chapter and Conference Paper

    CO (1–0) Maps of NGC7027

    NGC7027 is a very young planetary nebula in which the ionization of the red giant wind is only partially complete. Previous measurements of the CO (1–0) emission at 115 GHz from NGC7027 (Mufson, Lyon, Marioni,...

    C. R. Masson, K. W. Cheung, G. L. Berge, M. J. Claussen… in Mass Loss from Red Giants (1985)

  2. No Access

    Article

    Very long baseline interferometry at a wavelength of 3.4 mm

    In recent years the angular distribution of intensity of the compact cores of quasars and radio galaxies has been mapped in detail by very long baseline interferometry (VLBI) arrays1,2. These observations have sh...

    A. C. S. Readhead, C. R. Masson, A. T. Moffet, T. J. Pearson, G. A. Seielstad… in Nature (1983)

  3. No Access

    Article

    Low-frequency variability and predicted superluminal motion in 3C147

    VLBI observations of 3C147 reveal that its core is a low-frequency variable radio source which has brightened by a factor of 2 in 6 years. In combination with X-ray observations, this implies that bulk relativ...

    R. S. Simon, A. C. S. Readhead, A. T. Moffet, P. N. Wilkinson, B. Allen… in Nature (1983)

  4. No Access

    Chapter

    Radio Astronomy

    This report covers surveys of radio sources, basic measurements of source parameters and new developments in radio telescopes, instrumental techniques and data processing. The period covered is approximately l...

    G. Swarup, R. Fanti, I. I. K. Pauliny-Toth, A. Bridle… in Reports on Astronomy (1982)

  5. No Access

    Article

    Radio sources with superluminal velocities

    Radio data from four extragalactic sources, three quasars and one galaxy, show evidence for an apparent expansion faster than the speed of light. The data on these ‘superluminal’ sources are reviewed, and thei...

    M. H. Cohen, K. I. Kellermann, D. B. Shaffer, R. P. Linfield, A. T. Moffet… in Nature (1977)

  6. No Access

    Article

    High resolution observations of NGC1275 with a four-element intercontinental radio interferometer

    The radio nucleus of NGC1275 (3C84) is found to consist of three apparently stationary centres of emission extending over 0.006″ (3pc) along position angle −9°. One or more of these centres have changed their ...

    I. I. K. Pauliny-Toth, E. Preuss, A. Witzel, K. I. Kellermann, D. B. Shaffer… in Nature (1976)

  7. No Access

    Article

    Variations of Small Quasar Components at 2,300 MHz

    IN a previous article1 we reported long-baseline interferometer measurements of several quasi-stellar radio sources using stations of the NASA/JPL Deep Space Network in Australia and California. Comparison of thr...

    J. GUBBAY, A. J. LEGG, D. S. ROBERTSON, A. T. MOFFET, R. D. EKERS, B. SEIDEL in Nature (1969)

  8. No Access

    Article

    Trans-Pacific Interferometer Measurements at 2,300 MHz

    Interferometer observations of ten radio sources, most of them quasars, with a baseline between California and Australia.

    J. GUBBAY, A. J. LEGG, D. S. ROBERTSON, A. T. MOFFET, B. SEIDEL in Nature (1969)

  9. No Access

    Article

    Further Observations of Pulsating Radio Sources at 13 cm

    This article describes a series of measurements of the pulsating radio CP 0834, CP 0950, CP 1133 and CP 1919.

    R. D. EKERS, A. T. MOFFET in Nature (1968)

  10. No Access

    Article

    Detection of the Pulsed Radio Source CP 1919 at 13 cm Wavelength

    High-frequency measurements suggest that the spectrum of the pulsating radio source is extremely steep.

    A. T. MOFFET, R. D. EKERS in Nature (1968)

  11. No Access

    Chapter

    Detection of the Pulsed Radio Source CP 1919 at 13 cm Wavelength

    The pulsed radio source discovered at 3·68 m wavelength1 has been studied at various other wavelengths between 2 m and 73 cm2,3. The latter report states that the individual pulses have widths of about 35 ms with...

    A. T. Moffet, R. D. Ekers in Pulsating Stars (1968)

  12. No Access

    Article

    Distribution of Brightness in Extragalactic Radio Sources

    A. T. MOFFET, P. MALTBY in Nature (1961)