Precession of triaxially deformed neutron stars

A deformed neutron star (NS) will precess if the instantaneous spin axis and angular momentum are not aligned. Such a precession can produce continuous gravitational waves (GWs) modulate electromagnetic pulse signals of pulsars. In this contribution we extend our previous work in more convenient parameterization. We treat NSs as rigid triaxial bodies give analytical solutions for velocities Euler angles. summarize general GW waveforms from freely precessing use Taylor expansions to obtain with small wobble angle. For pulsar signals, adopt simple cone model study timing residuals profile modulations. reality, torque acts on pulsars affects behavior. Thereof, an additional extension work, consider vacuum display illustrative example body-frame velocities. Detailed investigations concerning GWs modulated forced triaixal be given future studies.