Observations of Six Glitches in PSR B1737-30

Details Observations of Six Glitches in PSR B1737-30 Observations of Six Glitches in PSR B1737-30

2007-11-08

arxiv.org/abs/0711.1196v2

Astronomy and Astrophysics

Astrophysics

7 pages, 10 figures

Scientific paper

10.1111/j.1365-2966.2007.12674.x

Six glitches have been recently observed in the rotational frequency of the young pulsar PSR B1737-30 (J1740-3015) using the 25-m Nanshan telescope of Urumqi Observatory. With a total of 20 glitches in 20 years, it is one of the most frequently glitching pulsars of the about 1750 known pulsars. Glitch amplitudes are very variable with fractional increases in rotation rate ranging from 10^{-9} to 10^{-6}. Inter-glitch intervals are also very variable, but no relationship is observed between interval and the size of the preceding glitch. There is a persistent increase in |\dot\nu|, opposite in sign to that expected from slowdown with a positive braking index, which may result from changes in the effective magnetic dipole moment of the star during the glitch.

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