First Observation of Magnetic Flux Rope Inside Electron Diffusion Region

Magnetic flux ropes (MFRs) play a crucial role during magnetic reconnection. They are believed to be primarily generated by tearing mode instabilities in the electron diffusion region (EDR). However, they have never been observed inside EDR. Here, we present first observation of an MFR The bifurcated nonforce-free MFR, with width ∼27.5 de L direction and ∼4.8 N direction, was moving away from X-line. Inside strong energy dissipation detected. can modulate electric field We reconstructed topology electron-scale MFR. Our study promotes understanding MRFs’ initial state its processes