NICER observation list: Target ID 361501

We propose to observe a nova in outburst and a flaring nova-like system in the Large Magellanic Cloud, both nuclear burning white dwarfs and very luminous supersoft X-ray sources. Our main aim is to measure pulsations with time scales of a minute, detected in other supersoft sources. The nova-like RX J0513.9-6951 has been observed before, but the timing analysis was not conclusive for short periods. For it and for the next luminous nova, we need good data with high S/N. Together with the results of three previous NICER targets, and with our accompanying proposal on the nuclear burning symbiotic SMC 3, these data will allow connecting the intriguing short time pulsations with binary physical parameters, giving insight on the root cause of the quasi-periodic variability.