Bursts, pulses, and flares from relativistic reconnection in neutron star magnetospheres 

Relativistic reconnection is one of the conjectured mechanisms behind multiwavelength emission from pulsar magnetospheres, magnetar giant flares and bursts, and potentially transients from merging neutron stars or collapsing magnetars, as well as fast radio bursts. Modeling the collisionless plasma in the magnetosphere requires kinetic physics combined with radiation- and quantum-electrodynamics. However, capturing global scales of the magnetosphere while also resolving the plasma scales is still a challenge. I will present a subgrid model in resistive magnetohydrodynamics that can capture skin depth scale effects of charge starvation, and synchrotron and inverse Compton radiation. I will show that with this model, we retrieve fast (kinetic) reconnection rates in relevant radiative regimes in global magnetohydrodynamics simulations of neutron star magnetospheres.