NICER observation list: Target ID 657501

The fast radio bursts (FRBs) are milli-second duration radio transients, the origin of which is still unknown. Possible mechanisms that could generate these highly coherent radio emission from FRBs involve a) neutron star magnetospheres and/or b) relativistic shocks far from the central energy of the source. To understand the origin of the FRBs we will monitor the two crucial aspects during their bursting phases: (A) Polarization signatures in radio band with FAST (Five hundred metre Aperture Spherical Telescope), and (B) detect any possible X-ray counterpart corresponding to the FRBs with NICER (radio to X-ray flux ratio). We propose to observe four repeating FRBs simultaneously with NICER+ FAST. The ToO trigger will be provided by FAST, when the sources are in bursting phases.