Annu. Rev. Astron. Astrophys. 1994. 32: 531-590
Copyright © 1994 by . All rights reserved

Reprinted with kind permission from , 4139 El Camino Way, Palo Alto, California, USA

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BARYONIC DARK MATTER

Bernard Carr


Schools of Mathematical Sciences, Queen Mary and Westfield College, Mile End Road, London E1 4NS, England


KEY WORDS: black holes, Population III stars, background radiation, gravitational lensing, brown dwarfs


Table of Contents

INTRODUCTION

EVIDENCE FOR DARK MATTER
Local Dark Matter
Spiral Galaxies
Elliptical Galaxies
Dwarf Galaxies
Groups and Clusters of Galaxies

BARYONIC VS NONBARYONIC DARK MATTER
Cosmological Nucleosynthesis
Microwave Anisotropies
Arguments for Baryonic Dark Matter
Variants of the Baryonic Dark Matter Scenario

POPULATION III STARS
Population III as the First Metal Producers
Population III as Dark Matter Producers
Expected Mass of Population III Stars
Population III Remnants

CONSTRAINTS ON POPULATION III
Background Light Constraints
Enrichment Constraints
Helium Constraints
Black Hole Accretion Constraints

DYNAMICAL CONSTRAINTS
Disk Heating by Halo Holes
Disruption of Stellar Clusters by Halo Objects
Effect of Dynamical Friction on Halo Objects
Is the Halo made of Dark Clusters?
Constraints on Dark Objects Outside Halos

GRAVITATIONAL LENSING EFFECTS
Macrolensing Constraints on Compact Objects
Microlensing in Macrolensed Quasars
The Effect of Microlensing on Quasar Luminosity
The Effect of Microlensing on Quasar Density
Line-to-Continuum Effects of Quasars
Microlensing of Gamma-Ray Bursts
Microlensing of Stars by Halo Objects in our own Galaxy

THE BLACK HOLE SCENARIO
Background Light Observations
Infrared Background from VMOs
Generation of 3K Background
Gravitational Radiation from Black Holes

LOW MASS OBJECTS
Cooling Flows in Clusters
Pregalactic and Protogalactic Cooling Flows
M-Dwarfs vs Brown Dwarfs
Evidence from Population I and Population II
Infrared Searches for Brown Dwarfs

CONCLUSIONS AND FUTURE PROSPECTS
Reappraisal of Baryonic Dark Matter Candidates
Best Bet Candidates
Future Prospects

REFERENCES

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