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Can slow pulsars in Milky Way globular clusters form via partial recycling?
Kyle Kremer, Claire S. Ye, Craig O. Heinke +3
Alongside the population of several hundred radio millisecond pulsars currently known in Milky Way globular clusters, a subset of six slowly spinning pulsars (spin periods $0.3-4\,…
The Anomalous Acceleration of PSR J2043+1711: Long-Period Orbital Companion or Stellar Flyby?
Thomas Donlon, Sukanya Chakrabarti, Michael T. Lam +53
Based on the rate of change of its orbital period, PSR J2043+1711 has a substantial peculiar acceleration of 3.5 0.8 mm/s/yr, which deviates from the acceleration predicted b…
Bayesian Solar Wind Modeling with Pulsar Timing Arrays
Jeffrey S. Hazboun, Joseph Simon, Dustin R. Madison +27
Using Bayesian analyses we study the solar electron density with the NANOGrav 11-year pulsar timing array (PTA) dataset. Our model of the solar wind is incorporated into a global f…
The NANOGrav 12.5-Year Data Set: Polarimetry and Faraday Rotation Measures from Observations of Millisecond Pulsars with the Green Bank Telescope
Haley M. Wahl, Maura McLaughlin, Peter A. Gentile +28
In this work, we present polarization profiles for 23 millisecond pulsars observed at 820 MHz and 1500 MHz with the Green Bank Telescope as part of the NANOGrav pulsar timing array…
Mass measurements for two binary pulsars discovered in the PALFA survey
W. W. Zhu, P. C. C. Freire, B. Knispel +15
In this paper, we present the results of timing observations of PSRs J1949+3106 and J1950+2414, two binary millisecond pulsars discovered in data from the Arecibo ALFA pulsar surve…
The NANOGrav 11-year Data Set: Solar Wind Sounding Through Pulsar Timing
D. R. Madison, J. M. Cordes, Z. Arzoumanian +28
The North American Nanohertz Observatory for Gravitational Waves (NANOGrav) has observed dozens of millisecond pulsars for over a decade. We have accrued a large collection of disp…
Using long-term millisecond pulsar timing to obtain physical characteristics of the bulge globular cluster Terzan 5
Brian Prager, Scott Ransom, Paulo Freire +4
Over the past decade the discovery of three unique stellar populations and a large number of confirmed pulsars within the globular cluster Terzan 5 has raised questions over its cl…
Discovery of a millisecond pulsar in the 5.4 day binary 3FGL J1417.5-4402: observing the late phase of pulsar recycling
F. Camilo, J. E. Reynolds, S. M. Ransom +8
In a search of the unidentified Fermi gamma-ray source 3FGL J1417.5-4402 with the Parkes radio telescope, we discovered PSR J1417-4402, a 2.66 ms pulsar having the same 5.4 day orb…
Properties and Evolution of the Redback Millisecond Pulsar Binary PSR J2129-0429
Eric C. Bellm, David L. Kaplan, Rene P. Breton +19
PSR J2129-0429 is a "redback" eclipsing millisecond pulsar binary with an unusually long 15.2 hour orbit. It was discovered by the Green Bank Telescope in a targeted search of unid…
The GMRT High Resolution Southern Sky Survey for pulsars and transients -I. Survey description and initial discoveries
Bhaswati Bhattacharyya, Sally Cooper, Mateusz Malenta +8
We are conducting a survey for pulsars and transients using the Giant Metrewave Radio Telescope (GMRT). The GMRT High Resolution Southern Sky (GHRSS) survey is an off-Galactic-plan…
Radio Timing and Optical Photometry of the Black Widow System PSR J1953+1846A in the Globular Cluster M71
M. Cadelano, C. Pallanca, F. R. Ferraro +6
We report on the determination of the astrometric, spin and orbital parameters for PSR J1953+1846A, a "black widow" binary millisecond pulsar in the globular cluster M71. By using…
Testing Theories of Gravitation Using 21-Year Timing of Pulsar Binary J1713+0747
W. W. Zhu, I. H. Stairs, P. B. Demorest +17
We report 21-yr timing of one of the most precise pulsars: PSR J1713+0747. Its pulse times of arrival are well modeled by a comprehensive pulsar binary model including its three-di…
Probing the neutron star interior and the Equation of State of cold dense matter with the SKA
Anna Watts, Renxin Xu, Cristobal Espinoza +15
With an average density higher than the nuclear density, neutron stars (NS) provide a unique test-ground for nuclear physics, quantum chromodynamics (QCD), and nuclear superfluidit…
A broadband radio study of the average profile and giant pulses from PSR B1821-24A
A. V. Bilous, T. T. Pennucci, P. Demorest +1
We present the results of wide-band (720-2400 MHz) study of PSR B1821-24A (J1824-2452A, M28A), an energetic millisecond pulsar visible in radio, X-rays and gamma-rays. In radio, th…
The Binary Companion of Young, Relativistic Pulsar J1906+0746
Joeri van Leeuwen, Laura Kasian, Ingrid H. Stairs +13
PSR J1906+0746 is a young pulsar in the relativistic binary with the second-shortest known orbital period, of 3.98 hours. We here present a timing study based on five years of obse…
Radio timing and optical photometry of the black widow system PSR J1518+0204C in the globular cluster M5
C. Pallanca, S. M. Ransom, F. R. Ferraro +5
We report on the determination of astrometric, spin and orbital parameters for PSR J1518+0204C, a "black widow" binary millisecond pulsar in the globular cluster M5. The accurate p…
A 1.05 Companion to PSR J2222-0137: The Coolest Known White Dwarf?
David L. Kaplan, Jason Boyles, Bart H. Dunlap +5
The recycled pulsar PSR J2222-0137 is one of the closest known neutron stars, with a parallax distance of pc and an edge-on orbit. We measure the Shapiro delay…
Arecibo Pulsar Survey Using ALFA. III. Precursor Survey and Population Synthesis
J. K. Swiggum, D. R. Lorimer, M. A. McLaughlin +33
The Pulsar Arecibo L-band Feed Array (PALFA) Survey uses the ALFA 7-beam receiver to search both inner and outer Galactic sectors visible from Arecibo ($32^{\circ}\lesssim \ell \le…
Interstellar Scintillation of the Double Pulsar J07373039
B. J. Rickett, W. A. Coles, C. F. Nava +8
We report here a series of observations of the interstellar scintillation (ISS) of the double pulsar J07373039 over the course of 18 months. As in earlier work (Coles et al., 20…
Spectroscopy of the inner companion of the pulsar PSR J0337+1715
David L. Kaplan, Marten H. van Kerkwijk, Detlev Koester +5
The hierarchical triple system PSR J0337+1715 offers an unprecedented laboratory to study secular evolution of interacting systems and to explore the complicated mass-transfer hist…
A millisecond pulsar in a stellar triple system
S. M. Ransom, I. H. Stairs, A. M. Archibald +18
Gravitationally bound three-body systems have been studied for hundreds of years and are common in our Galaxy. They show complex orbital interactions, which can constrain the compo…
VLBI astrometry of PSR J2222-0137: a pulsar distance measured to 0.4% accuracy
A. T. Deller, J. Boyles, D. R. Lorimer +5
The binary pulsar J2222-0137 is an enigmatic system containing a partially recycled millisecond pulsar and a companion of unknown nature. Whilst the low eccentricity of the system…
Timing and Interstellar Scattering of Thirty-five Distant Pulsars Discovered in the PALFA Survey
D. J. Nice, E. Altiere, S. Bogdanov +34
We have made extensive observations of 35 distant slow (non-recycled) pulsars discovered in the ongoing Arecibo PALFA pulsar survey. Timing observations of these pulsars over sever…
Chandra Observations of Black-Widow Pulsars
Peter Gentile, Maura McLaughlin, Mallory Roberts +6
We describe the first X-ray observations of binary millisecond pulsars PSRs J0023+0923, J1810+1744, J2215+5135, and J2256-1024. All four are Fermi gamma-ray sources and three are '…