Discovery and Timing of Millisecond Pulsars with the Arecibo 327 MHz Drift-Scan Survey

Evan F. Lewis; Timothy E. E. Olszanski; Julia S. Deneva; Paulo C. C. Freire; Maura A. McLaughlin; Kevin Stovall; Manjari Bagchi; Jose G. Martinez; Benetge B. P. Perera

doi:10.3847/1538-4357/acf99d

arXiv · 2306.10156

Discovery and Timing of Millisecond Pulsars with the Arecibo 327 MHz Drift-Scan Survey

Evan F. Lewis·Timothy E. E. Olszanski·Julia S. Deneva·Paulo C. C. Freire·Maura A. McLaughlin·Kevin Stovall·Manjari Bagchi·Jose G. Martinez·Benetge B. P. Perera

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Abstract

We present the discovery and timing solutions of four millisecond pulsars (MSPs) discovered in the Arecibo 327 MHz Drift-Scan Pulsar Survey. Three of these pulsars are in binary systems, consisting of a redback (PSR J2055+1545), a black widow (PSR J1630+3550), and a neutron star-white dwarf binary (PSR J2116+1345). The fourth MSP, PSR J2212+2450, is isolated. We present the multiyear timing solutions as well as polarization properties across a range of radio frequencies for each pulsar. We perform a multiwavelength search for emission from these systems and find an optical counterpart for PSR J2055+1545 in Gaia DR3, as well as a gamma-ray counterpart for PSR J2116+1345 with the Fermi-LAT telescope. Despite the close colocation of PSR J2055+1545 with a Fermi source, we are unable to detect gamma-ray pulsations, likely due to the large orbital variability of the system. This work presents the first two binaries found by this survey with orbital periods shorter than a day; we expect to find more in the 40% of the survey data that have yet to be searched.

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Evan F. Lewis, Timothy E. E. Olszanski, Julia S. Deneva, Paulo C. C. Freire, Maura A. McLaughlin, Kevin Stovall, Manjari Bagchi, Jose G. Martinez, Benetge B. P. Perera. 2023-10-19. Discovery and Timing of Millisecond Pulsars with the Arecibo 327 MHz Drift-Scan Survey. https://doi.org/10.3847/1538-4357%2Facf99d

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