Statistical properties of giant pulses from the Crab pulsar

Abstract

We have studied the statistics of giant pulses from the Crab pulsar for the first time with particular reference to their widths. We have analyzed data collected during 3.5 hours of observations conducted with the Westerbork Synthesis Radio Telescope operated in a tied-array mode at a frequency of 1200 MHz. The PuMa pulsar backend provided voltage recording of X and Y linear polarization states in two conjugate 10 MHz bands. We restricted the time resolution to 4 microseconds to match the scattering on the interstellar inhomogeneities. In total about 18000 giant pulses (GP) were detected in full intensity with a threshold level of 6 sigma. Cumulative probability distributions (CPD) of giant pulse energies were analyzed for groups of GPs with different effective widths in the range 4 to 65 microseconds. The CPDs were found to manifest notable differences for the different GP width groups. The slope of a power-law fit to the high-energy portion of the CPDs evolves from -1.7 to -3.2 when going from the shortest to the longest GPs. There are breaks in the CPD power-law fits indicating flattening at low energies with indices varying from -1.0 to -1.9 for the short and long GPs respectively. The GPs with a stronger peak flux density were found to be of shorter duration. We compare our results with previously published data and discuss the importance of these peculiarities in the statistical properties of GPs for the heoretical understanding of the emission mechanism responsible for GP generation.

arXiv comment5 pages, 2 figures. Accepted by Astronomy and Astrophysics

References in corpus (12)

• The Brightest Pulses in the Universe: Multifrequency Observations of the Crab Pulsar's Giant Pulses
• Multifrequency Radio Observations of the Crab Pulsar
• Giant Pulses from the Millisecond Pulsar B1821-24
• Giant Pulses from PSR B1937+21 with widths <= 15 nanoseconds and T_b >= 5 x 10^39 K, the Highest Brightness Temperature Observed in the Universe
• The Radio Spectral Index of the Crab Nebula
• High time-resolution observations of the Vela pulsar
• High-resolution single-pulse studies of the Vela Pulsar
• Multifrequency Observations of Giant Radio Pulses from the Millisecond Pulsar B1937+21
• Green Bank Telescope Studies of Giant Pulses from Millisecond Pulsars
• A search for giant pulses in Vela-like pulsars
• Properties and Interpretations of Giant Micropulses and Giant Pulses from Pulsars
• Radio and X-ray Observations of PSR B0540-69

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