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Pulsating Radio Source at α = 19h19m, δ = + 22°

  • J. G. Davies
  • P. W. Horton
  • A. G. Lyne
  • B. J. Rickett
  • F. G. Smith

Abstract

At the time of publication of the remarkable discovery by a group of Cambridge radio astronomers1 of the pulsating radio source at α = 19h19m39s ± 3s, δ= +22° ± 30′ (1950), the mark I radio telescope was equipped for reception at frequencies of 151, 240 and 408 MHz. The receivers were intended for studies of flare stars and interplanetary scintillations, and an Argus 400 digital computer was in use for the on-line analysis of the receiver outputs. It was therefore decided to search for radio pulses from this source at these receiver frequencies, which were above that of the original observation at 81 MHz. Radio pulses were found at all three frequencies, the first observation being on February 24, 1968. The position of the source agreed well with the original observations; the declination was measured as 21° 40′ ± 7′ (1950).

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References

  1. 1.
    Hewish, A., Bell, S. J., Pilkington, J. D. H., Scott, P. F., and Collins, R. A., Nature, 217, 709 (1968), (Paper 1).ADSCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1968

Authors and Affiliations

  • J. G. Davies
    • 1
  • P. W. Horton
    • 1
  • A. G. Lyne
    • 1
  • B. J. Rickett
    • 1
  • F. G. Smith
    • 1
  1. 1.Nuffield Radio Astronomy LaboratoriesUniversity of ManchesterJodrell BankUK

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