منابع مشابه
Structure of pulsar beams : conal versus patchy
Structure of mean pulsar radiation patterns is discussed within the nested-cones and patchy beam models. Observational predictions of both these models are analyzed and compared with available data on pulsar waveforms. It is argued that observational properties of pulsar waveforms are highly consistent with the nestedcone model and, in general, inconsistent with the patchy beam model.
متن کاملAn inverse Compton scattering (ICS) model of pulsar emission I. Core and conal emission beams
Core and conal emission beams of radio pulsars have been identified observationally (Rankin 1983,1993; Lyne and Manchester 1988), In the inner gap model (Ruderman and Sutherland 1975, hereafter RS75), the gap continually breaks down (sparking) by forming electron-positron pairs on a time scale of a few microseconds (RS75). This makes a large amplitude low frequency wave to be produced and which...
متن کاملCore and Conal Component Analysis of Pulsar B 1237 + 25
The paper provides a new analysis of this famous five-component (M) pulsar. In addition to the star’s core-active “abnormal” mode, we find two distinct behaviors within its “normal” mode, a “quiet-normal” mode with regular 2.8-period subpulse modulation and little or no core activity, and a “flare-normal” mode, where the core is regularly bright and a nearly 4-period modulation is maintained. T...
متن کاملToward An Empirical Theory of Pulsar Emission VIII: Subbeam Circulation and the Polarization-Modal Structure of Conal Beams
The average polarization properties of conal single and double profiles directly reflect the polarization-modal structure of the emission beams which produce them. Conal component pairs exhibit large fractional linear polarization on their inside edges and virtually complete depolarization on their outside edges; whereas profiles resulting from sightline encounters with the outer conal edge are...
متن کاملThe shape of pulsar radio beams
Using all available multi-component radio pulse profiles for pulsars with medium to long periods and good polarisation data, we have constructed a two-dimensional image of the mean radio beamshape. This shows a peak near the centre of the beam but is otherwise relatively uniform with only mild enhancements in a few regions. This result supports the patchy-beam model for emission beams in which ...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1996
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/280.1.143