Possible Interpretation of Pulses from a Radio Source

Details Possible Interpretation of Pulses from a Radio Source Possible Interpretation of Pulses from a Radio Source

Jun 1968

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1968natur.218.1037k&link_type=abstract

Nature, Volume 218, Issue 5146, pp. 1037-1038 (1968).

Physics

6

Scientific paper

THE Cambridge group1 recently announced the recording of pulses from a local object, lasting for about 0.016 s and repeating with extreme regularity with a period of 1.337 s, the accuracy being one part in 107. There have been further observations from Cambridge2 and from Jodrell Bank3. The amplitude of the pulses varies randomly, the pulses appearing and disappearing for periods of a few minutes. There is also a fine structure superimposed on the main pulse. Despite the regularity of the pulses, the power emitted varies significantly over all periods. Furthermore, observations indicate a frequency drift of -5 MHz s-1. The absence of any proper motion of the source, and the interpretation of the frequency drift in terms of dispersion through the interstellar plasma, limit the distance of the source to the range 103 A.U.

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