next up previous
Next: The Case For Up: Particle Dark Matter Previous: Particle Dark Matter

Introduction: Three Arguments for Non-baryonic Dark Matter

Several lines of evidence suggest that some of the dark matter may be non-baryonic: the non-detection of various plausible baryonic candidates for dark matter inferred, e.g., from galaxy rotation curves and from cluster of galaxy velocity dispersions, the need for non-baryonic dark matter for theoretical models of galaxy formation, and the large discrepancy between dynamical measurements implying and the baryon abundance inferred from big bang nucleosynthesis, . There are a number of well-motivated dark matter candidates: massive neutrinos, supersymmetric dark matter and ``invisible'' axions. Many of these dark matter candidates are potentially detectable by the current generation of dark matter experiments.

Dave Spergel
Wed Mar 6 14:02:15 EST 1996