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  • ASTROPHYSICS  (2)
  • 1975-1979  (2)
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  • 1
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    Unknown
    Pulsar average wave forms and hollow-cone beam models (1976)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: Pulsar wave forms have been analyzed from observations conducted over a wide radio-frequency range to assess the wave-form morphologies and to measure wave-form widths. The results of the analysis compare favorably with the predictions of a model with a hollow-cone beam of fixed dimensions and with random orientation of both the observer and the cone axis with respect to the pulsar spin axis. A class of three-component wave forms is included in the model by adding a central pencil beam to the hollow-cone hypothesis. The consequences of a number of discrepancies between observations and quantitative predictions of the model are discussed.
    Keywords: ASTROPHYSICS
    Type: Astrophysical Journal; 209; Nov. 1
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 2
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    Pulsar fluctuation spectra and the generalized drifting-subpulse phenomenon. II (1975)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: Pulsar observations at meter wavelengths have been analyzed to investigate pulse-to-pulse variations and to identify regions of the pulse profile which display distinct statistical properties. Fluctuation spectra of eight recently discovered pulsars are presented along with a description of the drifting-subpulse phenomenon in several objects with quasiperiodic responses in their fluctuation spectra. A quantitative analysis of the drifting-subpulse phenomenon in PSR 0031-07 and PSR 0809+74 is given which emphasizes the broad-band nature of the phenomenon. A summary of the memory exhibited by pulsars with time scales of about 50 periods is given.
    Keywords: ASTROPHYSICS
    Type: Astrophysical Journal; 197; Apr. 15
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
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