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  Arecibo PALFA Survey and Einstein@Home: Binary Pulsar Discovery by Volunteer Computing

Knispel, B., Lazarus, P., Allen, B., Anderson, D., Aulbert, C., Bhat, N., et al. (2011). Arecibo PALFA Survey and Einstein@Home: Binary Pulsar Discovery by Volunteer Computing. The Astrophysical Journal Letters, 732(1), L1-L5. doi:10.1088/2041-8205/732/1/L1.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0011-5117-1 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0011-5118-0
Genre: Journal Article

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 Creators:
Knispel, Benjamin1, Author              
Lazarus, P., Author
Allen, B.1, Author              
Anderson, D., Author
Aulbert, C.1, Author              
Bhat, N.D.R., Author
Bock, O., Author
Bogdanov, S., Author
Brazier, A., Author
Camilo, F., Author
Chatterjee, S., Author
Cordes, J.M., Author
Crawford, F., Author
Deneva, J.S., Author
Desvignes, G., Author
Fehrmann, H., Author
Freire, P.C.C., Author
Hammer, D., Author
Hessels, J.W.T., Author
Jenet, F.A., Author
Kaspi, V.M., AuthorKramer, M., Authorvan Leeuwen, J., AuthorLorimer, D.R., AuthorLyne, A.G., AuthorMachenschalk, B.1, Author              McLaughlin, M.A., AuthorMessenger, C., AuthorNice, D.J., AuthorPapa, M.A., AuthorPletsch, H.J., AuthorPrix, R.1, Author              Ransom, S.M., AuthorSiemens, X., AuthorStairs, I.H., AuthorStappers, B.W., AuthorStovall, K., AuthorVenkataraman, A., Author more..
Affiliations:
1Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24011              

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 Abstract: We report the discovery of the 20.7 ms binary pulsar J1952+2630, made using the distributed computing project Einstein@Home in Pulsar ALFA survey observations with the Arecibo telescope. Follow-up observations with the Arecibo telescope confirm the binary nature of the system. We obtain a circular orbital solution with an orbital period of 9.4 hr, a projected orbital radius of 2.8 lt-s, and a mass function of f = 0.15 M sun by analysis of spin period measurements. No evidence of orbital eccentricity is apparent; we set a 2σ upper limit e lsim 1.7 × 10–3. The orbital parameters suggest a massive white dwarf companion with a minimum mass of 0.95 M sun, assuming a pulsar mass of 1.4 M sun. Most likely, this pulsar belongs to the rare class of intermediate-mass binary pulsars. Future timing observations will aim to determine the parameters of this system further, measure relativistic effects, and elucidate the nature of the companion star.

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 Dates: 2011
 Publication Status: Published in print
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 Identifiers: DOI: 10.1088/2041-8205/732/1/L1
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Title: The Astrophysical Journal Letters
  Other : Astrophys. J. Lett.
Source Genre: Journal
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Publ. Info: Chicago, IL : University of Chicago Press for the American Astronomical Society
Pages: - Volume / Issue: 732 (1) Sequence Number: - Start / End Page: L1 - L5 Identifier: ISSN: 0004-637X
CoNE: /journals/resource/954922828215