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PPT : Cosmic Microwave Background

We have a program of Japanese government, Global Center of Excellence Program (GCOE). This Global COE recruits graduate students. For those who are interested in doing their PhD work on particle physics, cosmology, astrophysics, please contact me! We are also planning to have a winter school in Feb. for dark matter and dark energy.

If you are interested, please contact me:

Institute for Physics and Mathematics of the Universe
* IPMU is a new truly international institute established in 2008.
* There are a number of post doc positions available every year.
* We are hiring faculties too.
* At least 30% of members have to be non-Japanese.
* Official language of this institute is English.

Basic Equations and Notations
* Friedmann Equation
* redshift

Basic Equations and Notations
* Metric: Friedmann-Robertson-Walker
* Horizon Scale

§1. Introduction
* What’s Cosmic Microwave Background radiation?
* Directly Brings Information at t=380,000, T=3000K
Fossil of the early Universe
* Almost perfect Black Body
Evidence of Big Bang
* Very Isotropic: ?T/T ? 10-5
Evidence of the Friedmann Universe
* Information beyond Horizon
Evidence of Inflation

What happened at t=380,000yr
* Recombination: almost of all free electrons were captured by protons, and formed hydrogen atoms
* Hereafter, photons could be freely traveled. Before recombination, photons frequently scattered off electrons.

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