{ "id": "1608.01950", "version": "v1", "published": "2016-08-05T17:38:40.000Z", "updated": "2016-08-05T17:38:40.000Z", "title": "Simultaneous Observations of Giant Pulses from Pulsar PSR B0031-07 at 38 MHz and 74 MHz", "authors": [ "Jr-Wei Tsai", "John H. Simonetti", "Brandon Bear", "Jonathan D. Gough", "Joseph R. Newton", "Michael Kavic" ], "comment": "17 pages, 8 figures", "journal": "The Astronomical Journal 151 (3), 65, 2016", "categories": [ "astro-ph.HE" ], "abstract": "The first station of the Long Wavelength Array (LWA1) was used to study PSR~B0031-07 with simultaneous observations at 38 and 74~MHz. We found that 158 (0.35\\%) of the observed pulses at 38~MHz and 221 (0.49\\%) of the observed pulses at 74~MHz qualified as giant pulses in a total of 12 hours of observations. Giant pulses are defined as having flux densities of a factor of $\\geq$ 90 times that of an average pulse at 38~MHz and $\\geq$ 80 times that of an average pulse at 74~MHz. The cumulative distribution of pulse strength follows a power law, with an index of $-$4.2 at 38~MHz and $-$4.9 at 74~MHz. This distribution has a much more gradual slope than would be expected if observing the tail of a Gaussian distribution of normal pulses. The dispersion measure value which resulted in the largest signal-to-noise for dedispersed pulses was DM $=10.9$~pc~cm$^{-3}$. No other transient pulses were detected in the data in the wide dispersion measure range from 1 to 5000~pc~cm$^{-3}$. There were 12 giant pulses detected within the same period from both 38 and 74~MHz, meaning that the majority of them are not generated in a wide band.", "revisions": [ { "version": "v1", "updated": "2016-08-05T17:38:40.000Z" } ], "analyses": { "keywords": [ "giant pulses", "simultaneous observations", "pulsar psr", "wide dispersion measure range", "average pulse" ], "tags": [ "journal article" ], "note": { "typesetting": "TeX", "pages": 17, "language": "en", "license": "arXiv", "status": "editable" } } }