Overview

• Fast Radio Burst 20221022A, detected in 2022, has been traced to a galaxy 200 million light-years away using data from the CHIME radio telescope.
• Researchers determined the burst originated within the magnetosphere of a neutron star, marking the first conclusive evidence of such proximity for an FRB.
• Scintillation, or the twinkling effect caused by gas in the host galaxy, was key to pinpointing the burst's origin and its small emission region of about 10,000 kilometers.
• The burst's highly polarized light and S-shaped polarization curve suggest it came from a rotating, magnetized neutron star, or pulsar.
• These findings advance our understanding of FRBs, confirming their connection to magnetars and highlighting scintillation as a critical tool for future research.