The inner edge of the gas disk rapidly shrinks towards the innermost stable circular orbit (ISCO) near the stellar black hole, triggering the eruption of a plasma jet. The jet continues to erupt until the inner edge stops moving, at which point the jet ceases. Credit: T. Kawaguchi (University of Toyama) & K. Yamaoka (Nagoya University)
https://m.universetoday.com/system/media_attachments/files/114/314/737/364/662/437/original/9eda61fd1a57b50f.jpg