How to listen to what exotic Pulsars are telling us! ... Pulsar timing Pulsar evolution Test of gravitational theories using binary pulsars Probing the equation of state of super-dense matter 1 Pulsar timing How regularly do pulsars spin? ... 2 Pulsar timing For an isolated pulsar, the main parameters measured by timing are: 1. dispersion measure (DM) 2. 3. 4. position in the sky rotational period first derivative of rotation period. ... Pulsar timing However, rotational periods are not constant. ...

... 2.3 Data acquisition Spectra generated by the Multibeam correlator contain the usual structure seen in spectra from other H i instruments: a bandpass spectrum which is the sum of the sky , ground and receiver temperatures multiplied by the product of the filters in the receiver chain; superimposed on this is a noise ... Note also that sources extended much beyond ,40 arcmin can be imaged poorly in HIPASS images because of the bandpass sidelobe effect described in Section 3.3. ...