Quasilinear Response in a Glitching Pulsar

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

The frequently glitching pulsar PSR 1737-30 is well-fitted by a simple linear-response model, which suggests that part of the pulsar (the core, presumably) has a period about 200 μs faster than the rest of the pulsar. The glitches come often enough that the pulsar timing period (of the crust, presumably) always exceeds its equilibrium rate by about 2 μs, giving an excess slowing down between glitches of about 5 × 10-15. The pulsar would recover (were it not for intervening glitches) with a time constant slightly greater than 13 yr. If so, the true slowing down rate is 461.25 × 10-15. If the effects of the glitches can be so removed, it may be possible to measure the deceleration index even in the presence of such activity.

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