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The NANOGrav 11-Year Data Set: Limits on Gravitational Wave Memory
K. Aggarwal, Z. Arzoumanian, P. T. Baker +58
The mergers of supermassive black hole binaries (SMBHBs) promise to be incredible sources of gravitational waves (GWs). While the oscillatory part of the merger gravitational wavef…
The NANOGrav 11-year Data Set: Constraints on Planetary Masses Around 45 Millisecond Pulsars
E. A. Behrens, S. M. Ransom, D. R. Madison +27
We search for extrasolar planets around millisecond pulsars using pulsar timing data and seek to determine the minimum detectable planetary masses as a function of orbital period.…
A pulsar-based timescale from the International Pulsar Timing Array
G. Hobbs, L. Guo, R. N. Caballero +56
We have constructed a new timescale, TT(IPTA16), based on observations of radio pulsars presented in the first data release from the International Pulsar Timing Array (IPTA). We us…
Analysis of Multi-Hour Continuous Observations of Seven Millisecond Pulsars
Brent J. Shapiro-Albert, Maura A. McLaughlin, Michael T. Lam +2
Precision pulsar timing can be used for a variety of astrophysical tests from the detection of gravitational waves to probing the properties of the interstellar medium (ISM). Here…
The NANOGrav 11-Year Data Set: Evolution of Gravitational Wave Background Statistics
J. S. Hazboun, J. Simon, S. R. Taylor +60
An ensemble of inspiraling supermassive black hole binaries should produce a stochastic background of very low frequency gravitational waves. This stochastic background is predicte…
The Pulsar Search Collaboratory: Current Status and Future Prospects
Harsha Blumer, Maura A. McLaughlin, John Stewart +9
The Pulsar Search Collaboratory (PSC) is a collaboration between the Green Bank Observatory and West Virginia University, funded by the National Science Foundation. The PSC program…
The International Pulsar Timing Array: Second data release
B. B. P. Perera, M. E. DeCesar, P. B. Demorest +72
In this paper, we describe the International Pulsar Timing Array second data release, which includes recent pulsar timing data obtained by three regional consortia: the European Pu…
The Green Bank North Celestial Cap Pulsar Survey. V. Pulsar Census and Survey Sensitivity
Alexander McEwen, Renee Spiewak, Joseph Swiggum +23
The Green Bank North Celestial Cap (GBNCC) pulsar survey will cover the entire northern sky () at 350 MHz, and is one of the most uniform and sensitive all-sky pulsar…
Serendipitous Discovery of PSR J1431-6328 as a Highly-Polarized Point Source with the Australian SKA Pathfinder
David Kaplan, Shi Dai, Emil Lenc +10
We identified a highly-polarized, steep-spectrum radio source in a deep image with the Australian Square Kilometre Array Pathfinder (ASKAP) telescope at 888 MHz. After considering…
NANOGrav Education and Outreach: Growing a Diverse and Inclusive Collaboration for Low-Frequency Gravitational Wave Astronomy
The NANOGrav Collaboration, P. T. Baker, H. Blumer +25
The new field of gravitational wave astrophysics requires a growing pool of students and researchers with unique, interdisciplinary skill sets. It also offers an opportunity to bui…
Relativistic Shapiro delay measurements of an extremely massive millisecond pulsar
H. Thankful Cromartie, Emmanuel Fonseca, Scott M. Ransom +24
Despite its importance to our understanding of physics at supranuclear densities, the equation of state (EoS) of matter deep within neutron stars remains poorly understood. Millise…
The Green Bank North Celestial Cap Pulsar Survey. IV: Four New Timing Solutions
R. J. Aloisi, A. Cruz, L. Daniels +40
We present timing solutions for four pulsars discovered in the Green Bank Northern Celestial Cap (GBNCC) survey. All four pulsars are isolated with spin periods between 0.26s a…
High-Precision X-ray Timing of Three Millisecond Pulsars with NICER: Stability Estimates and Comparison with Radio
J. S. Deneva, P. S. Ray, A. Lommen +45
The Neutron Star Interior Composition Explorer (NICER) is an X-ray astrophysics payload on the International Space Station. It enables unprecedented high-precision timing of millis…