Observations of six glitches in PSR B1737−30 |
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| Authors: | W Z Zou N Wang R N Manchester J O Urama G Hobbs Z Y Liu J P Yuan |
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| Institution: | Urumqi Observatory, NAO-CAS, 40-5 South Beijing Road, Urumqi 830011, China;Australia Telescope National Facility, CSIRO, PO Box 76, Epping, NSW 1710, Australia;Department of Physics and Astronomy, University of Nigeria, Nsukka;Graduate School of CAS, 19 Yuquan Road, Beijing 100039, China |
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| Abstract: | 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 yr, it is one of the most frequently glitching pulsars of the ∼1750 known pulsars. Glitch amplitudes are very variable with fractional increases in rotation rate ranging from 10−9 to 10−6. Interglitch 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  , 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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| Keywords: | stars: neutron pulsars: individual: PSR B1737−30 |
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