Investigation of the Radio Source 3C 273 By The Method of Lunar Occultations

  title={Investigation of the Radio Source 3C 273 By The Method of Lunar Occultations},
  author={Cyril Hazard and M. B. Mackey and A. J. Shimmins},
The road to quasars
  • K. Kellermann
  • Physics
    Proceedings of the International Astronomical Union
  • 2014
Abstract Although the extragalactic nature of 3C 48 and other quasi stellar radio sources was discussed as early as 1960 by John Bolton and others, it was rejected largely because of preconceived
The Sequence of Events that led to the 1963 Publications in Nature of 3C 273, the First Quasar and the First Extragalactic Radio Jet
Abstract We have undertaken a detailed investigation, based on the available evidence, of the sequence of events that led to the historical discovery of the first quasar, 3C 273.
Probabilistic selection of high-redshift quasars
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RTT-150 TFOSC Tayfsal Gözlemleri ile Keşfedilen Kuazarlar
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Eleanor Margaret Burbidge. 12 August 1919—5 April 2020
Margaret Burbidge was one of the great observational astronomers of the twentieth century. She had a natural aptitude for instrumentation, observation and the interpretation of spectroscopic data,
History of Astronomy in Australia: Big-Impact Astronomy from World War II until the Lunar Landing (1945–1969)
Radio astronomy commenced in earnest after World War II, with Australia keenly engaged through the Council for Scientific and Industrial Research. At this juncture, Australia’s Commonwealth Solar
Multiwavelength analysis of the variability of the blazar 3C 273.
It is found that the optical emission in this source is dominated by the accretion disc during the entire time-frame of study, and in contrast with the observed behaviour in other blazars, 3C 273 does not show a correlation between the Gamma-ray spectral index and the gamma-ray luminosity.


On the Use of Lunar Occultations for Investigating the Angular Structure of Radio Sources
It is shown that it is possible, in principle, to recover the strip distribution of brightness aeross a radio source from the Fresnel diffraction pattern which is observed. as a. source is occulted.
Radio observations of the lunar atmosphere
Abstract On January 24, 1956 observations were made at a wavelength of 3.7 metres, of the lunar occultation of the Crab Nebula. A comparison of the time of obscuration of the nebula with the computed
Measurement of Interplanetary Electron Density from the Earth
The possibility of using radio wave occultation to measure the electron distribution in interplanetary space is discussed. Scattering in the solar corona and measurement of the lunar electron
Lunar Occultation of a Radio Source
AT present only a small number of radio sources have been satisfactorily identified with photographic objects. The important task of establishing further identifications faces a serious difficulty