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Discovery of Five Recycled Pulsars in a High Galactic Latitude Survey


Jacoby, BA and Bailes, M and Ord, SM and Knight, HS and Hotan, AW, Discovery of Five Recycled Pulsars in a High Galactic Latitude Survey, The Astrophysical Journal, 656, (1) pp. 408-413. ISSN 0004-637X (2007) [Refereed Article]

DOI: doi:10.1086/509312


We present five recycled pulsars discovered during a 21 cm survey of approximately 4150 deg2 between 15° and 30° from the Galactic plane using the Parkes radio telescope. One new pulsar, PSR J1528-3146, has a 61 ms spin period and a massive white dwarf companion. Like many recycled pulsars with heavy companions, the orbital eccentricity is relatively high (∼0.0002), consistent with evolutionary models that predict less time for circularization. The four remaining pulsars have short spin periods (3 ms < P < 6 ms); three of these have probable white dwarf binary companions and one (PSR J2010-1323) is isolated. PSR J1600-3053 is relatively bright for its dispersion measure of 52.3 pc cm-3 and promises good timing precision thanks to an intrinsically narrow feature in its pulse profile, resolvable through coherent dedispersion. In this survey, the recycled pulsar discovery rate was 1 per 4 days of telescope time or 1 per 600 deg2 of sky. The variability of these sources implies that there are more millisecond pulsars that might be found by repeating this survey. © 2007. The American Astronomical Society. All rights reserved.

Item Details

Item Type:Refereed Article
Research Division:Physical Sciences
Research Group:Astronomical sciences
Research Field:Galactic astronomy
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the physical sciences
UTAS Author:Hotan, AW (Dr Aidan Hotan)
ID Code:45561
Year Published:2007
Web of Science® Times Cited:34
Deposited By:Physics
Deposited On:2007-08-01
Last Modified:2008-04-04

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