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Article Contents

ABSTRACT

1. SCOPE OF THE DARK MATTER PROBLEM

1.1. Several Dark Matter Problems ?

1.2. Dark Matter in the Solar Neighbourhood

1.3. Dark Matter in Groups and Clusters

1.4. Dark Matter in Spiral Galaxies

1.4.1. Expectations

1.4.2. Early Debates

1.4.3. Mass Modelling Methods

1.5. Importance of the Dark Matter Problem Today

2. DARK MATTER IN THE GALAXY

2.1. Escape Speed for a Simple Spherical Model

2.2. Disk Heating and Massive Black Holes

2.3. Improved Local Disk Model

2.4. Microlensing Results

2.5. Satellites of the Milky Way

2.6. Dwarf Galaxy Halos

3. DARK MATTER IN SPIRAL GALAXIES

3.1. Maximum Disks ?

3.2. Declining Rotation Curves

3.3. Warps

3.4. Shape of Dark Matter Halos

3.4.1. Polar Ring Galaxies

3.4.2.Axisymmetry of the Disks

3.4.3. Flaring Gas Layers

3.5. Tidal Tail Extent

3.6. Extended Dark Halos

4. DARK MATTER IN OTHER SYSTEMS, AND AT LARGER SCALES

4.1. Dark Matter in Ellipticals

4.2. Groups and Clusters

4.3. Dark Matter in the Universe

4.3.1. Large Scale Structure

4.3.2. Big Bang Nucleosynthesis and the Amount of Baryons

4.3.3. = 1 ?

5. CONCLUDING REMARKS

REFERENCES