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25th of January 2017
ATNF Colloquium
The most relativistic binary pulsar & pulsar searching in the time domain:
News from the HTRU-South Low Latitude pulsar survey.
by Andrew Cameron (MPIfR Bonn, Germany)
Abstract. The HTRU-South Low Latitude pulsar survey represents the most sensitive blind pulsar survey taken of the southern Galactic plane to date. With long integration times and a custom acceleration search pipeline, the aim of this survey has been to discover both new relativistic binary systems and low-luminosity pulsars, with 102 discoveries having been made thus far. Here we present our searching strategy and some of our discovery highlights. In particular, we report on the discovery of a new relativistic binary pulsar found as part of this survey. With a short orbital period of 4.4 hours and an eccentricity of 0.606, this double neutron star system represents the most relativistic binary pulsar discovered in our Galaxy to date, with the potential to set new limits on gravitational theories such as General Relativity. In conjunction with a recently submitted paper, we also report on the results of an investigation into the Fast Folding Algorithm, a time-based pulsar searching technique which presents advantages over the Fast Fourier Transform in the search for long-period pulsars (P > 1 second). This investigation includes a practical demonstration on pulsars taken from the HTRU-South Low Latitude survey.

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