PPT-NASA’s Gravitational-Wave

Mission Concept Study Robin Stebbins Study Scientist Ninth LISA Symposium Paris 22 May 2012 Outline Goals Elements of the study Context of the study Responses to the RequestForInformation RFI. collapses. In . collaboration. . with. . Wen-Biao. Han, & Remo . Ruffini. . ICRANet. & . Physics. . Department. , . University. . of. . Rome. She-Sheng. . Xue. MG13, Stockholm, July 5. 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. . 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). . Clive Tomlinson. . Einstein’s General Theory Of Relativity predicts the existence of gravitational waves (1916). Yet to be directly detected.. Gravitational Waves. . Cause a time varying curvature of space-time, propagating at the speed of light. . Presentation for . 11. th. . Amaldi. Conference on Gravitational Waves. By. ASHOK TIWARI . June 25, 2015. Tribhuvan. University, Kathmandu, Nepal. 1. Outline. . Statement of the Problem. Introduction. Redshift. in Clusters of Galaxies. Marton Trencseni. Eotvos. University, Budapest. Gravitational . Redshift. Photon escapes from gravitational well. G. ains potential energy. Speed cannot decrease =). 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. To help explain how two bodies that are not in contact can exert a force on one another (i.e. gravitational, magnetic or electrostatic) we use the concept of fields. .. Fields are spheres of influence. They are invisible and intangible; they simply demonstrate how strong a characteristic is at a certain distance.. Detecting Einstein’s Elusive Waves. Opening a New Window to the Universe. An Indo-US joint mega-project concept proposal. . IndIGO. Consortium. (. Ind. ian . I. nitiative in . G. ravitational-wave . 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.. . NASA's 2013 Annual Workshop on Independent Verification and Validation of . Software. September 12, 2013. By. Darilyn Dunkerley. TASC, Inc.. Darilyn.M.Dunkerley@ivv.nasa.gov. NASA’s 2013 Annual Workshop on Independent Verification and Validation September 12, 2013. pcos.gsfc.nasa.gov. Ann Hornschemeier . PCOS Chief Scientist. Expand our knowledge of dark energy. Precisely measure the cosmological parameters governing the evolution of the universe and test the inflation hypothesis of the Big Bang . -12 . cm. A world-shaking discovery. James Clerk Maxwell. Professor at King’s College. London: 1860 – 1865. Unified theory of electricity and . . magnetism. Predicted electromagnetic waves. Identified light as due to these waves. 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".