Unveiling Galactic Black Holes: Mysterious QPO Signals Expose New Features

An international team of scientists has detected a quasi-periodic oscillation (QPO) signal in the radio band from a Galactic black hole system, specifically the microquasar GRS 1915+105. This is the first time such a signal has been observed in microquasar systems, and it could provide evidence of a "jet" launched by a Galactic stellar-mass black hole. The QPO signal has a rough period of 0.2 seconds and appears under special physical conditions. Further observations are needed to fully understand these intriguing signals and their implications for black hole behavior.