NICER observation list: Target ID 460701

We propose monitoring observations of the young, highly-energetic pulsars PSR J1838-0655 and PSR J1846-0258. These sources are only easily detectable as pulsars at X-ray energies, which makes NICER the ideal instrument to conduct the necessary observations. Previous NICER data successfully yielded rotation phase-connected timing models and glitches and tracked the recent magnetar-like outburst of PSR J1846-0258. The proposed observations would extend the baseline of the timing models. These models enable detections of the two pulsars at >~MeV, which in turn provide important diagnostics on the physics of pulsar emission and magnetospheres. Multi-year monitoring of the pulsars also enables detection of further glitches and outbursts and contemporaneous searches for gravitational waves.