NICER observation list: Target ID 257903

We propose to perform monitoring campaigns for pulsars PSR J0537-6910, J1412+7922, J1813-1749, J1849-0001, and J2229+6114, four of which can only be done via X-ray observations. These data will allow us to compute accurate phase-connected timing models for each pulsar, which will enable LIGO/Virgo to perform searches of gravitational waves from these mostly young and potentially stronger gravitational-wave emitting pulsars. Our proposed observations will occur contemporaneously with LIGO/Virgo's next, most sensitive, observing run, which begins in spring 2019. In addition, our high cadence observations of J0537-6910 will provide an opportunity to further pin-down and test this pulsar's unique glitch predictability and to measure potential X-ray signatures associated with glitches.