Pulsar fluctuation spectra and the generalized drifting-subpulse phenomenon. II

Astronomy and Astrophysics – Astronomy

Scientific paper

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Periodic Variations, Pulsars, Radio Astronomy, Stellar Spectra, Variance (Statistics), Broadband, Polarization Characteristics, Radiant Flux Density, Spectral Energy Distribution, Statistical Analysis

Scientific paper

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.

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