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Observations of pulsar radio emission. I - Total-intensity measurements of individual pulses

1975; IOP Publishing; Volume: 195; Linguagem: Inglês

10.1086/153351

1538-4357

J. H. Taylor, R. N. Manchester, G. R. Huguenin,

Geophysics and Gravity Measurements

view Abstract Citations (113) References (30) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Observations of pulsar radio emission. I. Total intensity measurements of individual pulses. Taylor, J. H. ; Manchester, R. N. ; Huguenin, G. R. Abstract The total intensities of individual pulses and subpulses were measured for 16 pulsars by using a multichannel, de-dispersing receiver and the NRAO 300-foot telescope. Some of the data are presented in the form of 'longitude-time diagrams' which display the complex patterns of subpulse intensity variations characteristic of most pulsars. Drifting subpulses are observed and analyzed in several of the sources, but a two-dimensional autocorrelation analysis failed to produce evidence of latent drifting behavior in most of the other pulsars. The separation between adjacent subpulses in the 'drifting subpulse' sources varies approximately inversely as the fourth root of the frequency. Fluctuation statistics are analyzed as a function of pulsar longitude, and cross-correlation analyses show that fluctuations observed in different parts of the pulse window are sometimes, but not always, closely related. These results are consistent with a pulsar model in which the radio emission arises from charged-particle bunches streaming along curved field lines above the pulsar magnetic pole. Publication: The Astrophysical Journal Pub Date: January 1975 DOI: 10.1086/153351 Bibcode: 1975ApJ...195..513T Keywords: Microwave Emission; Pulsars; Radiant Flux Density; Radio Astronomy; Data Processing; Fluctuation Theory; Pulse Duration; Radio Telescopes; Statistical Analysis; Time Response; Astrophysics full text sources ADS |