NICER observation list: Target ID 362701

It is now established that 1 in every 10 massive stars on the main sequence hosts a strong magnetic field at its surface, whose true origin is still unknown. Interestingly, only 1 in every 50 stars in close binary systems is magnetic. Although rare, known magnetic binary systems are very important laboratories for investigating the impact of tidal and magnetospheric interactions on the evolution of magnetic fields, and their potential ties to the origin of stellar magnetism. This proposal focuses on the binary system eps Lupi, which contains two magnetic stars in close orbit. As their magnetic fields are expected to be tangled together, we aim to test whether magnetospheric interactions occur for hot, magnetic massive stars, by looking for enhanced X-ray emission at periastron.