PPT-Probing Dark Dwarf Galaxies with Gravitational Lensing

Kaiki Taro Inoue KINDAI U Seminar Osaka U 22 Feb 2017 Outline Missing Satellite Problem Gravitational Lensing Substructure vs Lineofsight Halos ALMA Observations SDP81 MG04140534. 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). 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. Rich Dwarf Galaxies. . Sambit. . Roychowdhury. (NCRA), . Jayaram. . N. . Chengalur. . (. NCRA. ), . . Igor . D. . Karachentsev. (SAO. ), Margarita . Sharina. (SAO). Ayesha Begum . 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. . David Roberts, Jake Cohen, & Jing Lu. Brandeis University. Lakshmi . Saripalli. & Ravi . Subrahmanyan. Raman Research Institute. 1. Radio Galaxies. X-Shaped Radio Galaxies. Cheung’s Sample. Redshift. in Clusters of Galaxies. Marton Trencseni. Eotvos. University, Budapest. Gravitational . Redshift. Photon escapes from gravitational well. G. ains potential energy. Speed cannot decrease =). Emma Longstaff. Working with Sarah . Casewell. ,. . Graham . Wynn, Christiane . Helling. , Pierre . Maxted. . Planetary systems beyond the main sequence II. Brown dwarfs. Helling. & . Casewell. 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. Sahil. Singla. . (Carnegie Mellon University). Joint . Work (. Partly) With . ANUPAM GUPTA . and . VISWANATH NAGARAJAN. (2. nd. Feb, 2018). Combinatorial Optimization. Given a . Finite . Universe. Uri Zwick. Tel Aviv University. Started: . April . 2015. Last update: . January 12, 2017. Hashing with open addressing. “Uniform probing”. Insert key . in the first free position among.  . (Sometimes) assumed to be a . 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. stellar core remnant. composed mostly of . electron-degenerate matter. . A white dwarf is very . dense. : its mass is comparable to the . Sun. 's, while its volume is comparable to the . Earth. 's. A white dwarf's faint .