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We present analysis of the rate of giant radio pulses (GPs) emission from theCrab pulsar (B0531+21). Results of our 9 years daily observations with theLarge Phased Array radio telescope of Pushchino Radio Astronomy Observatory at111 MHz were used. Limited sample of 8753 strong individual pulses in 2004observational sessions was further analysed. It was shown that the observedmonthly averaged rate of GPs emission was highly unstable during the entirespan of observations and changes by about two orders of magnitude forhigh-energy pulses. Data were further analysed to search for the possibleconnection between pulsar glitches and the process of GP emission. We havefound a significant increase in the rate of emission of high-energy GPs afterMJD 58064, when the largest glitch ever observed in the Crab pulsar washappened. Although considerable changes in GPs emission rate could have beencaused by the propagation effects in the nebula itself, we have found that thepulsar had demonstrated high degree of intrinsic irregularity of high-energypulses emission over long time intervals.

Irregularities in the rate of generation of giant pulses from the Crab pulsar observed at 111 MHz