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  Two Millisecond Pulsars Discovered by the PALFA Survey and a Shapiro Delay Measurement

Deneva, J. S., Freire, P. C. C., Cordes, J. M., Lyne, A. G., Ransom, S. M., Cognard, I., et al. (2012). Two Millisecond Pulsars Discovered by the PALFA Survey and a Shapiro Delay Measurement. Astrophysical Journal, 757: 89. doi:10.1088/0004-637X/757/1/89.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000E-B319-4 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000E-B31A-2
Genre: Journal Article

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 Creators:
Deneva, J. S., Author
Freire, P. C. C., Author
Cordes, J. M., Author
Lyne, A. G., Author
Ransom, S. M., Author
Cognard, I., Author
Camilo, F., Author
Nice, D. J., Author
Stairs, I. H., Author
Allen, B.1, Author              
Bhat, N. D. R., Author
Bogdanov, S., Author
Brazier, A., Author
Champion, D. J., Author
Chatterjee, S., Author
Crawford, F., Author
Desvignes, G., Author
Hessels, J. W. T., Author
Jenet, F. A., Author
Kaspi, V. M., Author
Knispel, B., AuthorKramer, M., AuthorLazarus, P., Authorvan Leeuwen, J., AuthorLorimer, D. R., AuthorLynch, R. S., AuthorMcLaughlin, M. A., AuthorScholz, P., AuthorSiemens, X., 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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Free keywords: Astrophysics, Solar and Stellar Astrophysics, astro-ph.SR
 Abstract: We present two millisecond pulsar discoveries from the PALFA survey of the Galactic plane with the Arecibo telescope. PSR J1955+2527 is an isolated pulsar with a period of 4.87 ms, and PSR J1949+3106 has a period of 13.14 ms and is in a 1.9-day binary system with a massive companion. Their timing solutions, based on 4 years of timing measurements with the Arecibo, Green Bank, Nan\c{c}ay and Jodrell Bank telescopes, allow precise determination of spin and astrometric parameters, including precise determinations of their proper motions. For PSR J1949+3106, we can clearly detect the Shapiro delay. From this we measure the pulsar mass to be 1.47(+0.43/-0.31) solar masses, the companion mass to be 0.85(+0.14/-0.11) solar masses and the orbital inclination to be i = 79.9(+1.6/-1.9) degrees, where uncertainties correspond to +/- 1-\sigma\ confidence levels. With continued timing, we expect to also be able to detect the advance of periastron for the J1949+3106 system. This effect, combined with the Shapiro delay, will eventually provide very precise mass measurements for this system and a test of general relativity.

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 Dates: 2012-08-062012
 Publication Status: Published in print
 Pages: 29 pages, 4 tables, 7 figures; accepted for publication to The Astrophysical Journal
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1208.1228
DOI: 10.1088/0004-637X/757/1/89
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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: 757 Sequence Number: 89 Start / End Page: - Identifier: ISSN: 0004-637X
CoNE: https://pure.mpg.de/cone/journals/resource/954922828215_2