PPT-Expansion and Acceleration of the Universe: Dark Energy

Homogeneous and uniform cosmic expansion Hubble constant determines scale factor Hubble diagram was based on a limited distance scale calibrated by Cepheid variable stars in relatively nearby galaxies. . Cancun . Iberostar. , 16 January. Michael S. Turner. Kavli. Institute for Cosmological Physics. The University of Chicago. What you learned at mother’s knee. Michael S Turner. Michael S Turner. This . powerpoint. will show you the basics of dark matter and dark energy . Their place in the universe . By Jordan . Ilori. . DARK MATTER. Dark matter is a type of matter hypothesized in astronomy and cosmology to account for a large part of the mass that appears to be missing from the universe. Dark matter cannot be seen directly with telescopes; evidently it neither emits nor absorbs light or other electromagnetic radiation at any significant level. Instead, the existence and properties of dark matter are inferred from its gravitational effects on visible matter, radiation, and the large-scale structure of the universe. According to the Planck mission team, and based on the standard model of cosmology, the total mass–energy of the known universe contains 4.9% ordinary matter, 26.8% dark matter and 68.3% dark energy. Thus, dark matter is estimated to constitute 84.5% of the total matter in the universe and 26.8% of the total content of the universe.. Significance . of a dark night . sky. The Universe . is expanding. The . Big Bang. initiated the expanding Universe. Microwave radiation . evidence . of the . Big Bang. The Universe was initially hot & opaque. & Large scale structure. Tarun Souradeep. I.U.C.A.A. .. Cosmology . IUCAA . VSP program. (. May 18-22, . 2012). Lec. . 2:. Cosmic Content. Perturbed Universe . Simple. … yet, an . exotic. :. Dark Matter & Dark Energy. WWK: Students will understand the theories of Dark Matter & Dark Energy and how they’re thought to affect the Universe. .. Dark Matter. Dark Matter . - . matter that influences the evolution of the universe . ur U. niverse and the . Effects of. . I. nhomogeneities. Akihiro. 　. Ishibashi. 　. RESCEU Symposium . . Nov. 14. th. 2008. Cosmophysics. IPNS KEK. 　. Introduction. Distant . SNe-Ia. Physicist and communicator at CERN. The dark side of the Universe. Shrimp Nebula. ©. VLT, European Space Observatory. Convince you all of the existence of dark matter. Review how one can catch dark matter. Dark Energy and Dark Matter. Prof. Lawrence Wiencke. Department of Physics Engineering. Colorado School of Mines. Nov 9 2011. The Dark . Side. 95% of the. Universe Is Dark!. Energy budget of Universe. Exposing the Big Bang . as Philosophy not Science. Dr John Hartnett. 1929 - astronomer discovered . - ‘nebulae’ are galaxies. - redshifts of galaxies. - the Hubble Law . - interpreted to mean that . & Large scale structure. Tarun Souradeep. I.U.C.A.A. .. Cosmology . IUCAA . VSP program. (. May 18-22, . 2012). Lec. . 2:. Cosmic Content. Perturbed Universe . Simple. … yet, an . exotic. Expansion of the Universe. Early 1990’s – Universal expansion expected to slow. . - Universe is full of matter, and gravity pulls matter together. 1998 – Hubble Space Telescope observations show otherwise. The universe is the sum of all energy, matter, space and time.. But there. ’. s a difference between the universe we see (the observable universe) . and the universe as it really exists.. This gets complicated….. as Philosophy not Science. Dr John Hartnett. 1929 - astronomer discovered . - ‘nebulae’ are galaxies. - redshifts of galaxies. - the Hubble Law . - interpreted to mean that . the Universe is expanding. Dynamics. of. FRWL Universes. . Dynamics. FRW Universe. Friedmann-Robertson-Walker-Lemaitre Universe. . Cosmic Constituents:. Evolving Energy Density . . FRW Energy Equation. To infer the evolving energy density .