Timing of five millisecond pulsars discovered in the PALFA survey

Scholz, P., Kaspi, V. M., Lyne, A. G., Stappers, B. W., Bogdanov, S., Cordes, J. M., Crawford, F., Ferdman, R. D., Freire, P. C. C., Hessels, J. W. T., Lorimer, D. R., Stairs, I. H., Allen, B., Brazier, A., Camilo, F., Cardoso, R. F., Chatterjee, S., Deneva, J. S., Jenet, F. A., Karako-Argaman, C., Knispel, B., Lazarus, P., Lee, K. J., van Leeuwen, J., Lynch, R., Madsen, E. C., McLaughlin, M. A., Ransom, S. M., Siemens, X., Spitler, L. G., Stovall, K., Swiggum, J. K., Venkataraman, A. and Zhu, W. W. (2015) Timing of five millisecond pulsars discovered in the PALFA survey. Astrophysical Journal, 800 (2). ISSN 0004-637X

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Abstract

We present the discovery of five millisecond pulsars (MSPs) from the PALFA Galactic plane survey using Arecibo. Four of these (PSRs J0557+1551, J1850+0244, J1902+0300, and J1943+2210) are binary pulsars whose companions are likely white dwarfs, and one (PSR J1905+0453) is isolated. Phase-coherent timing solutions, ranging from similar to 1 to similar to 3 yr in length, and based on observations from the Jodrell Bank and Arecibo telescopes, provide precise determinations of spin, orbital, and astrometric parameters. All five pulsars have large dispersion measures (>100 pc cm(-3), within the top 20% of all known Galactic field MSPs) and are faint (1.4 GHz flux density less than or similar to 0.1 mJy,within the faintest 5% of all known Galactic field MSPs), illustrating PALFA's ability to find increasingly faint, distant MSPs in the Galactic plane. In particular, PSR J1850+0244 has a dispersion measure of 540 pc cm(-3), the highest of all known MSPs. Such distant, faint MSPs are important input for accurately modeling the total Galactic MSP population.

Item Type: Article
Uncontrolled Keywords: general pulsars,individual pulsars (psr j0557+1551, psr j1850+0244, psr j1902+0300, psr j1905+0453, psr j1943+221)
Depositing User: LivePure Connector
Date Deposited: 10 Jul 2018 15:30
Last Modified: 29 Jul 2020 23:44
URI: https://ueaeprints.uea.ac.uk/id/eprint/67567
DOI: 10.1088/0004-637X/800/2/123

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