Fading of the X-Ray Afterglow of Neutron Star Merger GW170817/GRB 170817A at 260 Days
Fading of the X-Ray Afterglow of Neutron Star Merger GW170817/GRB 170817A at 260 Days
The multi-wavelength electromagnetic afterglow from the binary neutron star merger GW170817/GRB170817A has displayed long-term power-law brightening, and presented challenges to post-merger models of the non-thermal emission. The most recent radio observations up to 200 days post-merger suggest that the afterglow has finally peaked and may now be fading, but fading …