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.. Boot Camp. Robert Nemiroff. Michigan Tech . Abstract. What is gravitational lensing, what has it told us about the universe, and what more can it tell us about the universe? Lenses such as black holes, stars, galaxies, clusters of galaxies, and the universe as a whole will be covered. Concepts such as Einstein rings, photon spheres, image pair creation events, and shear will be defined and briefly discussed. The intersection of gravitational lensing with current research frontiers will be reviewed including how microlensing is being used to search for extra-solar planets, how radio telescopes are being used to probe galaxy-center black holes, and how weak lensing is being used to probe galaxy evolution in the early universe. Possible lensing signals in continuing and upcoming missions such as Planck, DES, LSST, Euclid, and WFIRST will be reviewed. Relevant parts of the lecturer's own research will also be briefly mentioned. . and. Quasars . “A man should look for what is, and not what he thinks should be.” – Albert Einstein . Arvind. Haran and David Johnston. What is Gravitational Lensing?. Let’s take a step back to the Einstein days…. 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.. 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. and Large-Scale Structure. 1. Cora Dvorkin. IAS (Princeton) Harvard (Hubble fellow) . COSMO 2014. August 2014, Chicago. Outline. Dark Matter overview.. Effect of . WIMP Dark Matter . Kaiki Taro Inoue . (KINDAI U.). Seminar. @Osaka U 22 Feb 2017. Outline. Missing Satellite Problem. Gravitational Lensing . Substructure vs Line-of-sight Halos. ALMA Observations (SDP.81, MG0414+0534). 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.. 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. Dr. Simona . Murgia. (UC, Irvine). Dr. Will Dawson (Lawrence Livermore National Laboratory). Carolyn Slivinski (STScI). Facilitator: Dr. Emma Marcucci (STScI). Science Briefing. October . 5. , 2017. John . Moffat. Perimeter Institute. Miami 2015 Conference. Fort Lauderdale, December 16, 2015. 2015-12-21. 1. 2. 2015-12-21. 3. https://angel.co/mog. 2015-12-21. Introduction. Observations of the dynamics of galaxies as well as the dynamics. Gravity . and Light. Black Holes. What is Dark Matter?. Recap. Midterm . Friday . 11/. 1: summary review sheet posted. Canvas homework : . due Wednesday. Lab this week. Using . gravity to measure . masses.