Author: Bing Zhang
Abstract: Double neutron star mergers are strong sources of gravitational waves. The upcoming advanced gravitational wave detectors are expected to make the first detection of gravitational wave bursts (GWBs) associated with these sources. The post-merger product of at least some NS-NS mergers could be a hyper-massive millisecond magnetar. If this is the case, spindown of the magnetar would power bright multi-wavelength afterglows. I will discuss the bright X-ray afterglow due to dissipation of the magnetar wind and possible bright multi-wavelength afterglow due to interaction between a magnetar-powered merger debris and an ambient medium.