PDF-Dark Matter and Gravitational Lensing

. weak . lensing. science. Rachel . Mandelbaum. , CMU. Cosmology. A homogeneous . and isotropic. universe. Spatially flat . and . expanding (accelerating!). General Relativity:. 2. Function of the metric (defining space-time behavior). 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.. Gaussianities. Antony Lewis. http://cosmologist.info/. Lewis . arXiv:1107.5431. Hanson . & Lewis . arXiv:0908.0963. Lewis, Challinor & Hanson . arXiv:1101.2234. Pearson, Lewis & Regan . arXiv:1201.1010. Axion Dark Matter. Georg G. . Raffelt. , Max-Planck-. Institut. f. ür Physik, . München. Physics Colloquium, University of Sydney, 3 March 2014. Axions. as Cold Dark Matter of the Universe. Dark . 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.. Ron-Chou Hsieh. CYCU. Outline. It seems to have something there!. What are they?. Link with physics beyond the SM.. DM searches.. Constructing a DM model. Summary. It seems to have something there!. Galactic rotation curves:. Examples of Lens Systems. about 1 arcminute. about 1 arcsecond. Galaxy Clusters. Galaxies. More examples. Clusters of galaxies as lenses. T. Johnson . (U Michigan). Many examples. are known, but. strong lensing. Towards the first detection using SPT polarisation. ASA 2016 meeting, . Sydney. 04. 07. 2016. Srinivasan. . Raghunathan. School of Physics. University of Melbourne. In a nutshell . …. . South Pole Telescope – Observes CMB (both T, and P).. Ue. -Li Pen. Tingting. Lu. Olivier Dore. Cosmological Errors. How do we know errors on measurement and theory?. For Gaussian field, P(k) is 2-PCF, its error (Fisher) is 4-PCF, and the error on Fisher is 8-PCF.. DARK MATTER &DARK ENERGY. We know about only normal matter which is only 5% of the composition of universe and the rest is . DARK MATTER & DARK ENERGY. DARK MATTER. National Science Foundation • Division of Astronomical Sciences . Prepared by the . Association of Universities for Research in Astronomy . SCIENCE. . PEOPLE TECHNOLOGY. Scientists Discover Galaxy that is 99.99 Percent Dark Matter. 6. Extragalactic Microlensing. Wambsganss. . 2001. /sharp caustic crossing. /2,3-pt lens. Local Group vs. Extragalactic Microlensing. =k. Local Group Microlensing – . very very low optical depth. SpeakerSherry SuyuInstitutionMax Planck Institute for Astrophysics MunichTitleCosmology with Gravitational Lens Time DelayAbstractStrong gravitational lenses with measured time delays between the mult Perimeter Explorations 01. CERN HST2019 . Uniform Circular Motion. Predict. Observe. Explain. How are . mass. and . speed. connected in circular motion?. mass. speed. Uniform Circular Motion. Objective: .