Pulsar PSR B2303+30: a single system of drifting subpulses, moding and nulling |
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Authors: | Stephen L Redman Geoffrey A E Wright Joanna M Rankin |
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Institution: | Physics Department, University of Vermont, Burlington, VT 05405, USA;Astronomy Centre, University of Sussex, Falmer, Brighton BN1 9QJ |
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Abstract: | Analyses of multiple pulse sequences of the pulsar PSR B2303+30 reveal two distinct emission modes. One mode (B) follows a steady even–odd pattern and is more intense. The second mode (Q) is characteristically weak, but has intermittent drift bands with a periodicity of approximately 3 P 1/cycle, and nulls much more frequently than the B mode. Both modes occur with roughly equal frequency, and their profiles have a similar single-humped form with a slight asymmetry. Our observations and analyses strongly suggest that the subpulse drift rates in both modes are linked in a series of cycles, which can be modelled as relaxing oscillations in the underlying circulation rate. |
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Keywords: | MHD plasmas polarization radiation mechanisms: non-thermal pulsars: general pulsars: individual: B2303+30 |
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