Point-like Off-pulse GeV Emission from the Millisecond Pulsar PSR J0437-4715
The study analyzed GeV gamma-ray data from PSR J0437−4715 to search for off-pulse emission, such as a pulsar wind nebula (PWN). Spatial analysis found no significant extension beyond 0.12 degrees, ruling out a large halo. This suggests any putative bow shock PWN is too compact or its inverse Compton emission is too weak compared to the background.