'Dark energy density' diaporamas de présentation

What is our universe made of ?

What is our universe made of ?. fire , air, water, soil !. quintessence !. Dark Energy dominates the Universe. Energy - density in the Universe = Matter + Dark Energy 25 % + 75 %. What is Dark Energy ?. Composition of the universe. Atoms : ? b = 0.045

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Dark Side of the Universe

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Cosmology and the Early Universe Ch 26, 27.1, 27.4 - 27.6

Cosmology and the Early Universe Ch 26, 27.1, 27.4 - 27.6. What is the largest kind of structure in the universe? The ~100-Mpc filaments, sheets and voids? On larger scales, things look more uniform. Given no evidence of further structure, assume:. The Cosmological Principle.

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What is the Dark Energy?

What is the Dark Energy?. David Spergel Princeton University. One of the most challenging problems in Physics. Several cosmological observations demonstrated that the expansion of the universe is accelerating What is causing this acceleration?

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Holographic and agegraphic dark energy models

Holographic and agegraphic dark energy models. Yun Soo Myung Inje University, Gimhae, Korea. Contents. 1. Introduction 2. Sourced Friedmann equations 3. Interacting holographic dark energy model 4. Agegraphic dark energy model 5. New agegraphic dark energy model

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Holographic and agegraphic dark energy models

Holographic and agegraphic dark energy models. Yun Soo Myung Inje University, Gimhae, Korea. Contents. 1. Introduction 2. Sourced Friedmann equations 3. Interacting holographic dark energy model 4. Agegraphic dark energy model 5. New agegraphic dark energy model

571 views • 41 slides

Cosmic Microwave Background (CMB)

Cosmic Microwave Background (CMB). Peter Holrick and Roman Werpachowski. Beginnings of the U niverse. Big Bang inflation period further expansion and cooling of the universe particle creation and annihilation

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The Big Bang

The Big Bang. Lemaitre was the first to point out that if the Universe is expanding, it must have been much hotter and denser in the past This was first called the big bang by steady-state cosmologist Fred Hoyle as a term of ridicule

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Can we detect tracking dark energy dynamics?

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Cosmic Inhomogeneities and Accelerating Expansion

Cosmic Inhomogeneities and Accelerating Expansion. Ho Le Tuan Anh National University of Singapore PAQFT 27-29 Nov 2008. Outline. Concordance model Model with a local void Motivation for suggesting model Model Method to check the model Results with Riess 2007 SNe Gold sample

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The Dark Energy Atom Interferometer Experiment

The Dark Energy Atom Interferometer Experiment. To detect and measure effects of Dark Energy density or any dark contents of the vacuum (DCV). Jon Coleman, Royal Society Research Fellow. Many thanks to the support of the: Liverpool Particle Physics Group Cockcroft Institute

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Five Ways to Measure Dark Energy

Five Ways to Measure Dark Energy. Yongzhong Xu Los Alamos National Laboratory. Dark Matter & Dark Energy CCAST July 4-8th, 2005. #1 Science Breakthrough in 1998. #1 Science Breakthrough in 2003. Outline. What do we know about dark energy?

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f(T ) Theories: Status Update

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Cosmology

Cosmology. part 2. Topics. Models of the Universe: Recap How Far is Far? The Accelerating Universe Summary. Models of the Universe. Alexander Friedman 1888 - 1925. Density parameters at present epoch W M = r M / r c Matter W L = r L / r c Dark energy W M = W N + W D

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