PSR 2303+30: A single system of drifting subpulses, moding and nulling

Details PSR 2303+30: A single system of drifting subpulses, moding and nulling PSR 2303+30: A single system of drifting subpulses, moding and nulling

2004-07-27

arxiv.org/abs/astro-ph/0407540v2

Mon.Not.Roy.Astron.Soc. 357 (2005) 859-872

Astronomy and Astrophysics

Astrophysics

15 pages. 19 figures, submitted to MNRAS

Scientific paper

10.1111/j.1365-2966.2005.08672.x

Analyses of multiple pulse sequences of B2303+30 reveal that this pulsar has 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 driftbands with a periodicity of approximately 3 P/cycles, 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 driftrates 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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