PCS 181 Lecture Notes - Lecture 10: Supermassive Black Hole, Stellar Black Hole, Quasar

• School: Ryerson University
• Department: Physics
• Course: PCS 181
• Professor: Margaret Buckby

Document Summary

Radious of black hole = rbh=reh=rs= 2 g m/ (vesc)2. Several constants in the previous equation: 2, g, m, vesc(=c) Evaluating these constants gives us ~3000 m = 3 km. The previous equation becomes the schwarschild radious : rs=3 m* km. Where m* = m object/mo (mass of sun) Rs= 3 m* = 25 mo/mo = 25. Note that rs is in km when u use the simply equation. Generally divided into categories depending on mass: mini black hole (=primordial b. h. ) Hawking pstulates they might have formed during the big bang but never found. Mass~mass of the earth: stellar black hole. Forms from the gravitational collapse of a single star of large mass. Mass ~ 3 mo to ~100mo (mass of sun) Rs ~ 9km to 300 km: intermediate black hole: Forms from the collapse of material equivalent to thousands of solar masses. Rs ~ 300 km to 3000 s km.