PPT-Angular Momentum and the Formation of Stars and Black Holes

Richard B Larson Yale University Conclusions Compact objects such as stars and black holes generally form in larger systems such as binaries multiple systems star clusters or galaxies Gravitational interactions in these larger systems play a major role in the formation of compact objects by transporting angular momentum. P221: November 8, 2013. Summary. Linear momentum. Angular momentum. Clicker Question. A student is riding on the outside edge of a merry-go-round rotating about a frictionless pivot. She holds a heavy ball at rest in her hand. If she releases the ball, the angular velocity of the merry-go-round will:. Stars born with more than 8 — 10 M.  . cannot . lose enough mass to become white dwarfs. . These stars die by supernova explosions.. Ignition of “metals”. The core of an old high-mass star gets little . Escape Velocity. The minimum velocity needed to leave the vicinity of a body without ever being pulled back by the . body’. s . gravity is the . escape velocity. . . Escape Velocity. The escape velocity from a body depends on its . A . torque. is an action that causes objects to rotate.. Torque is . not. . the same thing as force.. For rotational motion, the torque. . is what is most directly related to the motion, not the force.. and angular momentum . of simulated. galaxy populations. Shy Genel. Hubble Fellow. Columbia University. Introduction. Romanowsky. & Fall 2012. An observed relation between the most basic morphological classification and a fundamental physical quantity: the specific angular momentum (. Angular momentum of a rigid rotating object. Conservation of angular momentum. Lecture . 23: . Angular momentum. Translation vs rotation.  . Angular. momentum . . is fundamental quantity for . rotation. . The Obvious Question. Once matter enters a black hole, is it fated never to reappear? . The answer seemed obvious – a clear . “. yes. ”. . – until about . forty . years . ago.. Oops!. Apparently not! . Torque. . Angular momentum. . . Angular momentum is conserved!!. Chapter 11: Angular Momentum. Reading assignment: Chapter 11.1 to 11.4. Homework . :. . QQ3, QQ4, AE8, OQ5, 1, 3, 5, 10, 11, 12, 25, 26, 31, 34, 56. Syed. Ali . Raza. General Relativity Project. Overview. Kerr Metric for rotating Black holes. Kerr Metric for extreme angular momentum. Static Limit and the . ergosphere. Radial and Tangential motion of light. Chapter 11. Copyright © 2014 John Wiley & Sons, Inc. All rights reserved.. 11-1. Rolling as Translation and Rotation Combined. 11.01. Identify that smooth rolling can be considered as a combination of pure translation and pure rotation.. blue hole. is a submarine cave or underwater sinkhole. They are also called vertical caves. There are many different blue holes located around the world, from Belize and the Bahamas to the Red Sea. Blue holes are roughly circular, steep-walled depressions, and so named for the dramatic contrast between the dark blue, deep waters of their depths and the lighter blue of the shallows around them.. Guidepost. In this chapter, you will consider how the interstellar medium condenses into stars and what the conditions inside stars must be like. How do stars form?. What is the evidence that stars are forming now?. Rate of change of angular momentum.. Gyroscopic Couple.. Gyroscopic Couple effect in a ship.. Gyroscopic effect in a aero plane.. Angular momentum (L). Angular momentum . (L):. . If a circular disc rotating about an axis passing through center of disc and perpendicular to circular plane.. L. B. >L. A. =L. F. =L. G. >L. E. >L. C. >L. D. L. C. =L. B. =L. A. =L. D. >L. E. =L. F. >L. G. L. A. >L. B. =L. C. =L. D. >L. E. >L. F. >L. G. L. B. >L. A. =L. C. =L.