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Record 3 of 2353
Dark matter candidates
Author and Affiliation:
Turner, Michael S.(NASAFermilab Astrophysics Center, Batavia)
Abstract: The types of particles which may provide the nonluminous mass required by big-bang cosmological models are listed and briefly characterized. The observational evidence for the existence of dark matter (outweighing the luminous component by at least a factor of 10) is reviewed; the theoretical arguments favoring mainly nonbaryonic dark matter are summarized; and particular attention is given to weakly interacting massive particles (WIMPs) remaining as relics from the early universe. The WIMPs are classified as thermal relics (heavy stable neutrinos and lighter neutralinos), asymmetric relics (including baryons), nonthermal relics (superheavy magnetic monopoles, axions, and soliton stars), and truly exotic relics (relativistic debris or vacuum energy). Explanations for the current apparent baryon/exotica ratio of about 0.1 in different theoretical scenarios are considered, and the problems of experimental and/or observational dark-matter detection are examined.
Publication Date: Jan 01, 1989
Document ID:
19900057040
(Acquired Nov 28, 1995)
Accession Number: 90A44095
Subject Category: ASTROPHYSICS
Document Type: Conference Paper
Publication Information: (SEE A90-44077)
Publisher Information: Netherlands
Meeting Information: ESO-CERN Symposium on Astronomy, Cosmology and Fundamental Physics; 3rd; May 16-20, 1988; Bologna; Italy
Meeting Sponsor: Istituto Nazionale di Fisica Nucleare;
CNR;
Universita di Bologna
Contract/Grant/Task Num: DE-AC02-80ER-10587
Financial Sponsor: NASA; United States
Organization Source: NASA Lewis Research Center; Cleveland, OH, United States
Fermi National Accelerator Lab.; Batavia, IL, United States
Chicago Univ.; Chicago, IL, United States
Description: 8p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: ASTRONOMICAL MODELS; DARK MATTER; MASS TO LIGHT RATIOS; NUCLEAR ASTROPHYSICS; GALACTIC CLUSTERS; MASS DISTRIBUTION; PARTICLE MASS; RELIC RADIATION; VIRIAL THEOREM; WEAK INTERACTIONS (FIELD THEORY)
Imprint And Other Notes: IN: Astronomy, cosmology and fundamental physics; Proceedings of the Third ESO-CERN Symposium, Bologna, Italy, May 16-20, 1988 (A90-44077 19-90). Dordrecht, Netherlands and Boston, MA, Kluwer Academic Publishers, 1989, p. 279-286; Discussion, p. 286.
Availability Source: Other Sources
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