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Story summary
- Large High Altitude Air Shower Observatory (LHAASO) identifies micro-quasars as sources of the cosmic ray knee.
- Micro-quasars are black hole systems formed when black holes accrete material from companion stars and act as powerful particle accelerators in the Milky Way.
- LHAASO detected ultra-high-energy gamma rays from five micro-quasars, including SS 433 and V4641 Sgr.
- The findings link the cosmic ray knee to black hole jet systems, reshaping views on origins.
