2006/09/15 by B. A. Jacoby, M. Bailes, S. M. Ord +2 · 3 citations
Physics and Astronomy · #Astronomy #Astrophysics #Binary pulsar #Galactic plane #Galaxy #Gamma-ray bursts and supernovae #Millisecond pulsar #Physics #Pulsar #Pulsar planet #Pulsars and Gravitational Waves Research #Radio Astronomy Observations and Technology #Radio telescope #Sky #Stars #Telescope #White dwarf #astro-ph
paper · pdf · doi:10.1086/509312
published as Astrophys.J.656:408-413,2007 · 15 pages, 3 figures, accepted for publication in ApJ
arxiv created 2006/09/15 · openalex publication_date 2007/02/03 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We present five recycled pulsars discovered during a 21 cm survey of approximately 4150 deg 2 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 deg 2 of sky. The variability of these sources implies that there are more millisecond pulsars that might be found by repeating this survey.