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  Einstein@Home Discovery of 24 Pulsars in the Parkes Multi-beam Pulsar Survey

Knispel, B., Eatough, R. P., Kim, H., Keane, E. F., Allen, B., Anderson, D., et al. (2013). Einstein@Home Discovery of 24 Pulsars in the Parkes Multi-beam Pulsar Survey. Astrophysical Journal, 774(2): 93. doi:10.1088/0004-637X/774/2/93.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000E-B307-C Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0014-A17D-9
Genre: Journal Article

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 Creators:
Knispel, B.1, Author              
Eatough, R. P., Author
Kim, H., Author
Keane, E. F., Author
Allen, B.1, Author              
Anderson, D., Author
Aulbert, C.1, Author              
Bock, O.1, Author              
Crawford, F., Author
Eggenstein, H. -B., Author
Fehrmann, H.1, Author              
Hammer, D., Author
Kramer, M., Author
Lyne, A. G., Author
Machenschalk, B.1, Author              
Miller, R. B., Author
Papa, M. A.2, Author              
Rastawicki, D., Author
Sarkissian, J., Author
Siemens, X., Author
Stappers, B. W., Author more..
Affiliations:
1Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24011              
2Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24013              

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Free keywords: Astrophysics, Galaxy Astrophysics, astro-ph.GA, Astrophysics, Instrumentation and Methods for Astrophysics, astro-ph.IM,General Relativity and Quantum Cosmology, gr-qc
 Abstract: We have conducted a new search for radio pulsars in compact binary systems in the Parkes multi-beam pulsar survey (PMPS) data, employing novel methods to remove the Doppler modulation from binary motion. This has yielded unparalleled sensitivity to pulsars in compact binaries. The required computation time of approximately 17 000 CPU core years was provided by the distributed volunteer computing project Einstein@Home, which has a sustained computing power of about one PFlop/s. We discovered 24 new pulsars in our search, of which 18 were isolated pulsars, and six were members of binary systems. Despite the wide filterbank channels and relatively slow sampling time of the PMPS data, we found pulsars with very large ratios of dispersion measure (DM) to spin period. Among those is PSR J1748-3009, the millisecond pulsar with the highest known DM (420 pc cm^{-3}). We also discovered PSR J1840-0643, which is in a binary system with an orbital period of 937 days, the fourth largest known. The new pulsar J1750-2531 likely belongs to the rare class of intermediate-mass binary pulsars. Three of the isolated pulsars show long-term nulling or intermittency in their emission, further increasing this growing family. Our discoveries demonstrate the value of distributed volunteer computing for data-driven astronomy and the importance of applying new analysis methods to extensively searched data.

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 Dates: 2013-02-032013
 Publication Status: Published in print
 Pages: 16 pages, 9 figures, 3 tables; submitted to ApJ
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1302.0467
DOI: 10.1088/0004-637X/774/2/93
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Title: Astrophysical Journal
Source Genre: Journal
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Publ. Info: Chicago, IL : University of Chicago Press for the American Astronomical Society
Pages: - Volume / Issue: 774 (2) Sequence Number: 93 Start / End Page: - Identifier: ISSN: 0004-637X
CoNE: https://pure.mpg.de/cone/journals/resource/954922828215_2