The Swinburne intermediate-latitude pulsar survey

被引:128
作者
Edwards, RT [1 ]
Bailes, M [1 ]
van Straten, W [1 ]
Britton, MC [1 ]
机构
[1] Swinburne Univ Technol, Ctr Astrophys & Supercomp, Hawthorn, Vic 3122, Australia
关键词
methods : observational; surveys; pulsars : general;
D O I
10.1046/j.1365-8711.2001.04637.x
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We have conducted a survey of intermediate Galactic latitudes using the 13-beam 21-cm multibeam receiver of the Parkes 64-m radio telescope. The survey covered the region enclosed by 5 degrees < <vertical bar>b \ < 15<degrees> and - 100 degrees < l < 50 degrees with 4702 processed pointings of 265 s each, for a total of 14.5 d of integration time. 13 2 x 96-channel filterbanks provided 288 MHz of bandwidth at a centre frequency of 1374 MHz, one-bit sampled every 125 mus and incurring similar to DM/13.4 cm(-3) pc samples of dispersion smearing. The system was sensitive to slow and most millisecond pulsars in the region with flux densities greater than approximately 0.3-1.1 mJy. Offline analysis on the 64-node Swinburne workstation cluster resulted in the detection of 170 pulsars of which 69 were new discoveries. Eight of the new pulsars, by virtue of their small spin periods and period derivatives, may be recycled and have been reported elsewhere. The slow pulsars discovered are typical of those already known in the volume searched, being of intermediate to old age. Several pulsars experience pulse nulling and two display very regular drifting subpulses. We discuss the new discoveries and provide timing parameters for the 48 slow pulsars for which we have a phase-connected solution.
引用
收藏
页码:358 / 374
页数:17
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