The NANOGrav 11-year Data Set: High-precision Timing of 45 Millisecond Pulsars
Zaven Arzoumanian et al 2018 ApJS 235 37
High-precision timing data for 45 millisecond pulsars observed over 11 years provide new parallax, Shapiro-delay, and orbital-period-variation measurements, as well as constraints on the gravitational-wave background.