The Parkes Multibeam Pulsar Survey: V. Finding binary and millisecond pulsars

Details The Parkes Multibeam Pulsar Survey: V. Finding binary and millisecond pulsars The Parkes Multibeam Pulsar Survey: V. Finding binary and millisecond pulsars

2004-08-12

arxiv.org/abs/astro-ph/0408228v1

Astronomy and Astrophysics

Astrophysics

13 Pages, 9 figures, 4 tables. Accepted for publication in MNRAS

Scientific paper

10.1111/j.1365-2966.2004.08310.x

The Parkes Multibeam Pulsar Survey is the most successful survey of the Galactic plane ever performed, finding over 600 pulsars in the initial processing. We report on reprocessing of all 40,000 beams with a number of algorithms, including conventional frequency-domain searches and an acceleration search for fast binary pulsars. The very large volume of results coupled with the need to distinguish new candidates from known pulsars and their many harmonics, often with multiple detections from different search algorithms, necessitated the development of a new graphical selection tool tightly linked to a web-based results database. We discuss and demonstrate the benefits of these software systems which are specifically designed for large survey projects. The results of this processing have been encouraging; we have discovered 128 new pulsars including 11 binary and 15 millisecond pulsars, in addition to those previously found in the survey, we have thus far discovered 737 pulsars. In this paper we discuss the discoveries of PSR J1744-3922, a 172 ms mildly recycled pulsar in a 4.6 hr orbit that exhibits nulling behaviour, not previously observed in recycled or binary objects; PSR J1802-2124, an intermediate mass binary pulsar (IMBP) and PSR J1801-1417, a solitary millisecond pulsar.

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