Variation in Radiation Intensity of 26 Radio Pulsars at 111 MHz

Abstract

This article presents the results of processing observations of 26 radio pulsars of the Northern Hemisphere, obtained as part of the search and study of giant pulses at the Large Phased Array of the Pushchino Radio Astronomy Observatory at 111 MHz. Individual pulses with peak flux density 30 and more times higher than the peak flux density of dynamic average profile were found from the pulsars B0011+47, B0450+55, B0525+21, B0751+32, B0823+26, and B0917+63. Pulsars B0450+55, B0525+21, and B0751+32 generate individual pulses that meet the main criteria for giant pulses of pulsars. The analysis of the distributions of individual pulses of pulsars by the peak flux density relative to the average flux density in the session is carried out. From the analyzed sample, for 5 pulsars the distribution is lognormal, for 10 it is a combination of log-normal and power-law distributions. In other cases, it cannot be unambiguously approximated only by the lognormal distribution or by a combination of the lognormal and power-law distributions.