Certificate programme in Science: Astronomy Core Module 4 Cosmology

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Certificate programme in Science Astronomy (Core
Module 4)Cosmology

• Dr Lisa Jardine-Wright,
• Institute of Astronomy, Cambridge University

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Lecture Overview

• Jones Lambourne
• Chapters 6.6 8.5
• Cosmology A Very Short Introduction
• Peter Coles
• Structure Formation
• Cosmic structures
• Galaxy clusters
• Filaments superstructures
• Voids
• Cosmic web
• Gravity!

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Cosmic Structures

• Patterns in space
• APM survey - contains positions, magnitudes,
  sizes and shapes for about 3 million galaxies

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Cosmic Structures

• Patterns in space
• CfA galaxy survey

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AAO
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Cosmic Structures
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Cosmic Structures

• Galaxy Clusters
• Vary in size and richness
• Milky Way is part of the local group - only other
  large galaxy M31

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http//www.astro.uu.se/ns/local_group.html
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Cosmic Structures

• Galaxy Clusters
• Vary in size and richness
• Milky Way is part of the local group - only other
  large galaxy M31
• Rich Clusters / Abell Clusters
• 100s to 1000s of galaxies per Million Light Years
• E.g. Virgo Coma

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Virgo Cluster
http//www.star.ucl.ac.uk/apod/apod/
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Coma Cluster
http//antwrp.gsfc.nasa.gov/apod/
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Cosmic Structures

• Galaxy Clusters
• Vary in size and richness
• Milky Way is part of the local group - only other
  large galaxy M31
• Rich Clusters / Abell Clusters
• 100s to 1000s of galaxies per Million Light Years
• E.g. Virgo Coma
• Greyscale of sizes between these two extremes.
• Density defines bound and unbound structures
• Unbound are purely statistic\al

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Cosmic Structures

• Galaxy Clusters
• Vary in size and richness
• Milky Way is part of the local group - only other
  large galaxy M31
• Rich Clusters / Abell Clusters
• 100s to 1000s of galaxies per Million Light Years
• E.g. Virgo Coma
• Greyscale of sizes between these two extremes.
• Density (through gravity) defines bound and
  unbound structures
• Unbound are purely statistical

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Cosmic Structures

• Filaments Superstructures
• 300 M Lt yrs

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http//www.astro.princeton.edu/rhl/PrettyPictures
/
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http//www.astro.princeton.edu/mjuric/universe/
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Voids
http//lepus.physics.ualr.edu/tahall/FINAL/Week1.
htm
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Voids
http//www.astro.uni-bonn.de/mhetter/index.php?in
dex1
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Cosmic Web
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Cosmic Structures

• Gravitational Instabilities

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Analysing the Fluctuations
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Dark Matter and Fluctuations
Galaxy Halo Scales
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