PPT-Gravitational-waves: Sources and detection

Ravi kumar Kopparapu Center for GravitationalWave Physics CGWP Gravity Einsteins General theory of relativity Gravity is a manifestation of curvature of 4 dimensional 3 space 1 time spacetime produced by matter metric equation g. 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, .... To demonstrate the physical reality of gravitational waves, consider the example system of the previous section. We will concentrate our attention on three of the test masses, one chosen arbitrarily from the plane, along with its nearest neighbors in the +x and +y directions. Imagine that we have equipped the mass at the vertex of this “L” with a lamp that can be made to emit very brief pulses of light. Imagine also that the two masses at the ends of the “L” are fitted with mirrors aimed so that they will return the flashes of light back toward the vertex mass. In 1916, the year after the final formulation of the field equations of general relativity, Albert Einstein predicted the existence of gravitational waves. He found that the linearized weak-field equations had wave solutions: transverse waves of spatial strain that travel at the speed of light, generated by time variations of the mass quadrupole moment of the source [1,2]. Einstein understood that gravitational-wave amplitudes would be remarkably small; moreover, until the Chapel Hill conference in 1957 there was significant debate about the physical reality of gravitational waves [3] some history. (based on D. . Kennefick’s. work). Historical tidbits. 1776: Laplace suggests four mechanisms that could explain secular perturbations of Moon-Earth orbit. One the explanations was a non-instantaneous propagation of gravity, affecting the binary system (abandoned because its speed would be too large to be measurable to explain the effect). . (& Gravitons ?). -. Vishal. . Kasliwal. Classical Electromagnetism. Vacuum. Maxwell Field Equations. Light!!. Electromagnetic waves. Quantum Electromagnetism. Hamiltonian of Quantized. Field. where. A Brief Timeline of the . Discovery of Gravity. Aristotle. There . is . no effect or motion without a cause. . . The element of earth was thought to be heavy by nature and therefore pulled towards the centre of the (geocentric) universe.. versus convective . blueshifts. , and wavelength variations across stellar disks. Dainis Dravins. – Lund . Observatory. , Sweden. www.astro.lu.se. /~. dainis. KVA. IAU Comm.30, IAU XXVIII GA Beijing, August 2012. Overview of Why and How. Dan Burbank and Tony Young. AST5022. Introduction. Background. Physics. Sources. Detectors and Detector Implications. Questions. Gravitational Waves . Speed-of-light wave propagation solution of Einstein’s Field Equations. Dennis Stewart. November. Smu. Modern Physics. 1. Outline for this talk. Einstein . Einsteins Contribution. Joseph Weber. LIGO. The Machine and How it works. The Chrip. Conclusion. 2. Albert Einstein. D.S. . Hajdukovic. GBAR Collaboration Meeting. 18. th. April 2012. Our best physics . The Standard Model of Particles and Fields. +. . General Relativity . is . considered. as insufficient to explain the observed phenomena in Astrophysics and Cosmology.. The Search for Gravitational Waves with Advanced LIGO. Tiffany Summerscales, . Andrews University Dept. . of Physics. What are gravitational waves?. Einstein’s theory of General Relativity predicts that mass curves the fabric of . https://www.ligo.caltech.edu/system/video_items/files/4/EinsteinsMessengerLIGO.mp4?1436490806. 2017 Nobel Prize in Physics. : Rainer Weiss - Barry C. . Barish. -Kip S. . Thorne. "for . decisive contributions to the LIGO detector and the observation of gravitational waves". NSF and the Laser Interferometer Gravitational - Wave Observatory In 1916 , Albert Einstein published the paper that predicted gravitational waves – ripples in the fabric of space - time resulti gravitational. . waves. by. Laser-plasma . interaction. . Hedvika . Kadlecová. . a. , . S. Weber . a. , G. Korn. a . a. . Institute of Physics, v.v.i. ASCR, Na Slovance 1999, Prague, Czech Republic;.