Binary pulsars
Require a further 4 terms to account for effects in the binary
system.
If companion is not compact, require tidal and quadrupole contributions
to timing model
Aberration delay due to rotation of the Earth and/or the
pulsar
Roemer delay
Figure 34: Two contributions to the Roemer delay. Left: the radial velocity
shifts due to motion in an eccentric binary system. Right: The timing parallax.
Einstein delay
Includes the
Gravitational redshift due to companion
Time dilation
Figure 35: The changing Einstein delay due to precession of the orbit of PSR
B1913+16
Shapiro delay
Figure 36: The Shapiro delay in PSR B1855+09