PDF-(BOOS)-Gravitational Waves: Volume 2: Astrophysics and Cosmology

The twovolume book Gravitational Waves provides a comprehensive and detailed account of the physics of gravitational waves While Volume 1 is devoted to the theory and experiments Volume 2 discusses what can be learned from gravitational waves in astrophysics and in cosmology bysystematizing a large body of theoretical developments that have taken place over the last decades The second volume also includes a detailed discussion of the first direct detections of gravitational waves In the authors typical style the theoretical results are generally derived afresh clarifying or streamlining the existing derivations whenever possible and providing a coherent and consistent picture of the fieldThe first volume of Gravitational Waves which appeared in 2007 has established itself as the standard reference in the field The scientific community has eagerly awaited this second volume The recent direct detection of gravitational waves makes the topics in this book particularly timely. Millisecond . Pulsars:. Dan Stinebring. Oberlin College. CWRU – May 21, 2009. . George Greenstein. (Amherst College). Discovery of “Millisecond” Pulsars. 1982 – Arecibo Observatory – Don Backer, Sri Kulkarni, .... Albert Einstein predicted the existence of gravitational waves as ripples of space-time moving with the speed of light. They are caused when two massive objects, for example neutron stars, are orbiting closely around each other with an incredible speed. . In 1918 Einstein published the paper ÜBER GRAVITATIONSWELLEN [1] in which, for the first time, the effect of gravitational waves was calculated, resulting in his famous “quadrupole formula” (QF). Einstein was forced to this publication due to a serious error in his 1916 paper [2], where he had developed the linear approximation (“weak- field”) scheme to solve the field equations of general relativity (GR). In analogy to electrodynamics, where accelerated charges emit electromagnetic waves, the linearized theory creates gravitational waves, popagating with the speed of light in the (background) Minkowski space-time. A major difference: Instead of a dipole moment, now a quadrupole moment is needed. Thus sources of gravitational waves are objects like a “rotating dumbbell”, e. g. realized by a binary star system. The Child of General Relativity. A Necessary Change. Concepts after Einstein :-. Time is not absolute. There is no ether frame. Notion of . spacetime. Concepts before Einstein :-. There is a preferred reference frame ether. Sources and detection . Ravi . kumar. . Kopparapu. Center for Gravitational-Wave Physics (CGWP) . Gravity. Einstein’s General theory of relativity :. Gravity is a manifestation of curvature of 4- dimensional (3 space + 1 time) space-time produced by matter (metric equation ? g. The nearly exact degeneracy -- i.e., nearly the same CMB anisotropies in models with different geometries but the same matter content –. Is a limit to deriving parameters such . as the Hubble constant from CMB. Edwin Hubble. S.B. ’10, Ph.D. ‘17. Hubble . constant. Hubble law. Hubble diagram. Hubble age. Hubble classification. Hubble radius. Hubble sequence. Hubble . flow. Hubble volume. …. .. Pretty much invented observational cosmology & . with a Pulsar . T. iming Array. Lindley . Lentati. Cambridge University . Gravitational Waves. Fluctuations in curvature that propagate at the speed of light. Experiment . in the lab:. Using an accurate clock, record when you measure ticks. . Gravitational Waves. Prediction. General Relativity – 1915. Gravity is not the pulling force envisioned by Kepler or Newton. Space warps around massive objects. Accelerating massive objects could radiate distortions like the wake of a boat. Astronomy 123. Cosmology. Cosmology is the empirical study of the organization, structure and evolution of the Universe. At any given time we always think our Cosmology is correct: . Ancient: Earth is at center of Universe. Gravitational Waves: On the Brink of a New Astronomy. Tiffany Summerscales, Dept. of Physics. What are gravitational waves?. Einstein’s theory of General Relativity predicts that mass curves the fabric of . Florida State University. YSP. Topics. Big . Bang Cosmology. The Accelerating Universe. Summary. Big . bang . cosmology. 3. In . the distant past the visible Universe was much smaller than it is today and therefore much, much hotter.. Ra Inta (Texas Tech University) . for the LIGO Scientific Collaboration and the Virgo . Collaboration. LIGO . Document . G1700692-v3. 1. A tour of some applied mathematical tools used within the LIGO and Virgo collaborations. ronomy Astrophysics 586 49