NICER observation list: Target ID 359801

We are proposing continuation of NICER timing of PSR J1846-0258 and J1838-0655 for a total of 123.5 ks to establish multi-year ephemerides and allow us to improve the significance of our detections of emission with Fermi GBM and LAT, to discriminate between pair creation models in pulsar magnetospheres, to understand weak or absent particle acceleration and glitches in MeV pulsars, to probe the pulsar-magnetar connection and to put tight constraints on continuous GW-emission. These pulsars are members of a group of young and energetic rotation-powered pulsars that are both radio and GeV quiet, and therefore must be monitored in X-rays to understand their high-energy spectrum and enigmatic nature. Our A01 timing has already allowed firm pulsed detections up to 300 keV with GBM NaI.