PPT-Modeling the Cosmos: The Shape of the Universe

Anthony Lasenby Astrophysics Group Cavendish Laboratory Cambridge UK anlasenbymraocamacuk wwwmraocamacukclifford Overview Want to share two recent exciting developments Recent progress in cosmology. Szydagis. 02.02.2015. 1. /10. Flammarion engraving (1888). Pondering an Ultimate Question. Originally domain of religion. . and philosophy alone, followed by science and religion mixing, then slowly separating. Sections 37.4 – 37.5. Reminders. Today: In-class Quiz #6 addressing Chapter 37 and questions from prior quiz and test.. LAB B2-WNL: . Wave Nature of Light . due Friday @ 4pm.. Weekly Reflection #13 will be sent out after class today; due Tuesday evening after fall break.. Secs. 37.1-37.3. Reminders. Lab . D1-LFA: . Light from Atoms . due Friday @ 4 (this will be the last lab for the semester). In-class Quiz #6 Thursday, November 20???. Keep, reschedule, or delete . will address chapter 37 only. Lecture II – From Galileo to Newton. The Renaissance. “What if the Sun be Center to the World, and other Stars. By his attractive . vertue. and . thir. own. Incited, dance about him various rounds?. Ryan Broll. Overview. Always referring to “shape” at all times, because of special relativity.. Curvature vs. Topology. “Flat or curved” vs. “Open or closed”. FLRW model. Named after scientists. M. . Ramanathan. STTP CAD 2011. Mesh modeling and processing. Mesh model. Consists of only {V, E, F}. Boundary meshes – represent 2D surfaces embed in 3D. STTP CAD 2011. Mesh modeling and processing. Looking at Modern Cosmologies. Robert C. Newman. What is Cosmology?. A study of the known parts of the universe to try to describe the whole universe. Using the information now reaching earth to reconstruct the entire history of the cosmos. the Universe. The Uniform Temperature of the Early Universe. The brighter and darker spots in the microwave background correspond to hotter and cooler areas in the universe (at an age of 400,000 years). However, the hotter spots are only a tiny bit hotter than the cooler spots. So all . Ryan Broll. Overview. Always referring to “shape” at all times, because of special relativity.. Curvature vs. Topology. “Flat or curved” vs. “Open or closed”. FLRW model. Named after scientists. California State Summer School for Mathematics and Science. What is COSMOS?. “an intensive four-week summer residential program summer residential program for students who have demonstrated an aptitude for… STEM subjects”. The time since the beginning of the universe is 1/H years or about 13.8 billion years.. The Big Bang started off immensely hot!. Radiation dominated the early universe.. Matter dominance occurs after radiation “cools” enough for matter to condense per the relationship E=mc. The Night Sky. The Milky Way. Stars (individual, binary, variable). Clusters (globular and open). Nebulae (reflection, emission, dark, planetary). SNRs, Neutron Stars, & Black Holes. Galaxies. The Universe. If you go to your school every day and every day it looks the same do you think much about it?. If one day you go there after the holidays and in the main entrance there is a large sculpture what would you do? Look at it. What would you think? . Probabilistic Methods. q. Practical . Challenges in . Prob. Analysis. Quality deterministic model, validated. How to estimate input distributions. Correlated input variables. Complex systems with long solution times require more efficient alternatives to Monte Carlo.