  The spin-down limit of the continuous gravitational wave strain from pulsars
assumed to be triaxial stars rotating about a principal moment of inertia axis
depends upon the value of the intrinsic spin frequency derivative of the
pulsar, among other parameters. In order to get more accurate intrinsic spin
frequency derivative values, dynamical effects contributing to the measured
spin frequency derivative values must be estimated via more realistic
approaches. In this work, we calculated improved values for the spin-down limit
of the continuous gravitational wave strain (assuming that pulsars are triaxial
stars rotating about a principal moment of inertia axis) for a set of 237
pulsars for which a targeted search for continuous gravitational waves was
recently carried out by the LIGO-Virgo-KAGRA (LVK) Collaboration. We used
`GalDynPsr', a Python-based public package, to calculate more realistic values
for the intrinsic spin frequency derivatives and, consequently, we get more
realistic values of the spin-down limit. The realistic values that we obtain
for the intrinsic spin frequency derivatives can also provide a valuable
contribution to improving the sensitivity of searches for continuous
gravitational waves from known pulsars.
