Two-sided jet originates from the filament internal reconnection

Magnetic reconnection driving two-sided jets is typically associated with interactions between an emerging bipole and the overlying horizontal magnetic field, or between filamentary threads from separate magnetic systems. Leveraging high temporal and spatial resolution observations from ground-based and space-borne instruments, we have identified a two-sided jet originating from magnetic reconnection between threads within a single filament. Our observations show that as two initially crossing filamentary threads within the filament converge, reconnection takes place at their intersection. In the Doppler images, distinct redshift and blueshift signals are observed at the locations where the filament threads intersected. This process generates a two-sided jet with outflow speeds of {22.2} and {62.5}. Following reconnection, the original crossing threads transform into two parallel threads that subsequently separate at speeds of {2.8} and {8.3}. This observation offers a new perspective on the mechanisms responsible for jet formation.