PPT-Gravitational Lensing

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 extrasolar planets how radio telescopes are being used to probe galaxycenter 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 lecturers own research will also be briefly mentioned . Roger in 2006 in Leiden Do we really understand clusters well enough to use them for cosmological studies Maru711sa in 2006 in Leiden Lensing Xray 20 Paul in 2002 in Ringberg Lensing masses of clusters are inferior to Xray determinations Lensing ha 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. 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…. Sarah Bridle. University College London. 3d vs 2d (tomography). Non-Gaussian -> higher order statistics. Low redshift -> dark energy. versus. Weak Lensing Tomography. In principle (perfect zs). Wayne Hu Gravitational Lensing of the CMB wa w0 WDE -2 -1.5 -1 -0.5 0 -1 0 1 0 0.5 1 -2 -1 GravitationalLensingTemperatureCosmologicalObservablesfromLensedPowerSpectraDarkEnergyMassReconstructionDraga 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. cosmic anti-string. Kotvytskiy. . A.T., . Shulga. V.M. .. Institute of Radio Astronomy of Nat. Ac. Sci. of Ukraine. Karazin. Kharkov National University, Ukraine. GRAVITATIONAL LENS EQUATION FOR A. 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).. 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). 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. 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 Design/Motivate/Analyze Surveys. . -- CMB lensing. . -- Primordial Non-. gaussianity. . -- Modified Gravity. Software. . -- Cosmo Simulations. . -- Analysis pipelines. . -- Level 3 Frameworks. Gravitational Lensing of the CMB.