Timing analysis for 20 millisecond pulsars in the Parkes Pulsar Timing Array

Understand

We present timing models for 20 millisecond pulsars in the Parkes Pulsar Timing Array.

• The precision of the parameter measurements in these models has been improved over earlier results by using longer data sets and modelling the non-stationary noise.
• We describe a new noise modelling procedure and demonstrate its effectiveness using simulated data.
• Our methodology includes the addition of annual dispersion measure (DM) variations to the timing models of some pulsars.