Baryonic dark matter
Book
·
OSTI ID:6368222
- Inst. of Astronomy (US)
- Inst. of Astronomy and King's College (US)
Dark matter, first definitely found in the large clusters of galaxies, is now known to be dominant mass in the outer parts of galaxies. All the mass definitely deduced could be made up of baryons, and this would fit well with the requirements of nucleosynthesis in a big bang of small {Omega}{sub B}. However, if inflation is the explanation of the expansion and large scale homogeneity of the universe and of baryon synthesis, and if the universe did not have an infinite extent at the big bang, then {Omega} should be minutely greater than unity. It is commonly hypothesized that most mass is composed of some unknown, non-baryonic form. This book first discusses the known forms, comets, planets, brown dwarfs, stars, gas, galaxies and Lyman {alpha} clouds in which baryons are known to exist. Limits on the amount of dark matter in baryonic form are discussed in the context of the big bang. Inhomogeneities of the right type alleviate the difficulties associated with {Omega}{sub B} = 1 cosmological nucleosynthesis.
- OSTI ID:
- 6368222
- Country of Publication:
- United States
- Language:
- English
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