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A Large-Area Survey for Radio Pulsars at High Galactic Latitudes

Jacoby, B. A. and Bailes, M. and Ord, S. M. and Edwards, R. T. and Kulkarni, S. R. (2009) A Large-Area Survey for Radio Pulsars at High Galactic Latitudes. Astrophysical Journal, 699 (2). pp. 2009-2016. ISSN 0004-637X.

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We have completed a survey for pulsars at high Galactic latitudes with the 64 m Parkes radio telescope. Observing with the 13 beam multibeam receiver at a frequency of 1374 MHz, we covered ~4150 square degrees in the region –100° ≤ l ≤ 50°, 15° ≤ |b| ≤ 30° with 7232 pointings of 265 s each, thus extending the Swinburne Intermediate Latitude Pulsar Survey a further 15° on either side of the Galactic plane. The signal from each beam was processed by a 96 channel × 3 MHz × 2 polarization filterbank, with the detected power in the two polarizations of each frequency channel summed and digitized with 1 bit sampling every 125 μs, giving good sensitivity to millisecond pulsars with low or moderate dispersion measure. The resulting 2.4 TB data set was processed using standard pulsar search techniques with the workstation cluster at the Swinburne Centre for Astrophysics and Supercomputing. This survey resulted in the discovery of 26 new pulsars including seven binary and/or millisecond pulsars, and redetected 36 previously known pulsars. We describe the survey methodology and results, and present timing solutions for the 19 newly discovered slow pulsars, as well as for nine slow pulsars discovered the Swinburne Intermediate Latitude Pulsar Survey that had no previous timing solutions. Even with a small sampling interval, 1374 MHz center frequency, and a large mid-latitude survey volume we failed to detect any very rapidly spinning pulsars. Evidently, such "submillisecond" pulsars are rare.

Item Type:Article
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URLURL TypeDescription
Bailes, M.0000-0003-3294-3081
Kulkarni, S. R.0000-0001-5390-8563
Additional Information:© 2009. The American Astronomical Society. Received 2007 February 19; accepted 2009 May 12; published 2009 June 26. We thank H. Knight, A. Hotan, and W. van Straten for help with survey observations, and the Parkes Multibeam Pulsar Survey collaboration for making the data acquisition hardware and software used for this survey available to the community. The Parkes telescope is part of the Australia Telescope, which is funded by the Commonwealth of Australia for operation as a National Facility managed by CSIRO. B.A.J. and S.R.K. thank NSF and NASA for supporting their research. B.A.J. held a National Research Council Research Associateship Award at the Naval Research Laboratory (NRL) during part of this work. Basic research in radio astronomy at NRL is supported by the Office of Naval Research.
Funding AgencyGrant Number
Commonwealth of AustraliaUNSPECIFIED
Office of Naval ResearchUNSPECIFIED
Subject Keywords:pulsars: general; stars: neutron; surveys
Issue or Number:2
Record Number:CaltechAUTHORS:20090903-142316252
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Official Citation:A Large-Area Survey for Radio Pulsars at High Galactic Latitudes B. A. Jacoby, M. Bailes, S. M. Ord, R. T. Edwards, and S. R. Kulkarni 2009 ApJ 699 2009-2016 doi: 10.1088/0004-637X/699/2/2009
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:15584
Deposited By: Ruth Sustaita
Deposited On:14 Sep 2009 21:24
Last Modified:09 Mar 2020 13:18

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