Timing of Five PALFA-Discovered Millisecond Pulsars

Stovall, K.; Allen, B.; Bogdanov, S.; Brazier, A.; Camilo, F.; Cardoso, F.; Chatterjee, S.; Cordes, J. M.; Crawford, F.; Deneva, J. S.; Ferdman, R.; Freire, P. C. C.; Hessels, J. W. T.; Jenet, F.; Kaplan, D. L.; Karako-Argaman, C.; Kaspi, V. M.; Knispel, B.; Kotulla, R.; Lazarus, P.; Lee, K. J.; van Leeuwen, J.; Lynch, R.; Lyne, A. G.; Madsen, E.; McLaughlin, M. A.; Patel, C.; Ransom, S. M.; Scholz, P.; Siemens, X.; Stairs, I. H.; Stappers, B. W.; Swiggum, J.; Zhu, W. W.; Venkataraman, A.

doi:10.3847/1538-4357/833/2/192

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Timing of Five PALFA-Discovered Millisecond Pulsars

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Allen, B.
Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Knispel, B.
Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Stovall, K., Allen, B., Bogdanov, S., Brazier, A., Camilo, F., Cardoso, F., et al. (2016). Timing of Five PALFA-Discovered Millisecond Pulsars. The Astrophysical Journal, 833(2): 192. doi:10.3847/1538-4357/833/2/192.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002C-5CF4-0

Abstract

We report the discovery and timing results for five millisecond pulsars (MSPs) from the Arecibo PALFA survey: PSRs J1906+0055, J1914+0659, J1933+1726, J1938+2516, and J1957+2516. Timing observations of the 5 pulsars were conducted with the Arecibo and Lovell telescopes for time spans ranging from 1.5 to 3.3 yr. All of the MSPs except one (PSR J1914+0659) are in binary systems with low eccentricities. PSR J1957+2516 is likely a redback pulsar, with a ~0.1 $M_\odot$ companion and possible eclipses that last ~10% of the orbit. The position of PSR J1957+2516 is also coincident with a NIR source. All 5 MSPs are distant (>3.1 kpc) as determined from their dispersion measures, and none of them show evidence of $\gamma$-ray pulsations in a search of Fermi Gamma-Ray Space Telescope data. These 5 MSPs bring the total number of MSPs discovered by the PALFA survey to 26 and further demonstrate the power of this survey in finding distant, highly dispersed MSPs deep in the Galactic plane.