Author : Odo Juliana Nwakego1, Chima Abraham Iheanyichukwu2 , Ayantunji Benjamin Gbenro3 and Haruna Mohammed Shehu3
In this work, the spin down parameters of frequently glitching pulsars are investigated on a large scale. 301 glitches from 27 pulsars were assembled and the glitches were separated according to the various manifestations of neutron stars in order to investigate their similarities and differences. We analyzed the glitch parameters to see how they correlate and if possible, to predict one from the other. Pulsar’s characteristic age - glitch events correlation was also investigated. The results showed that Radio Pulsars contributed 87% of the glitches. Pulsars of age bracket 103 to 106 years dominated the glitch events. The glitch size also depends on pulsars’ characteristic age, though some are due to generic factors. A correlation coefficient 0.78 was obtained for the variation of log and log indicating that large frequency spin-up is generally associated with large frequency derivative jump. That of log and log shows moderate correlation (r = 0.50), though the result is an indication that they have a form of power law relationship. The result for Glitch Activity is in line with literature. Moreover, it is observed that the glitch events in the pulsar PSR J0537-6910 has a continuous distribution unlike many other pulsars. Glitches from PSR J1740-3015 appeared in group suggesting that two glitch mechanisms are working at a regular interval in this pulsar. Finally, due to the frequency of glitch in some pulsars and the glitch sizes, the plausible mechanisms for glitch still remains those involving the transfer of angular momentum.
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