Ly-alpha clouds - Isolated structures in cold dark matter cosmogony
Journal Article
·
· Astrophysical Journal; (USA)
- Princeton Univ. Observatory, NJ (USA)
A filter designed to study isolated density fluctuations is introduced and used to identify Ly-alpha cloud candidates in a biased CDM model. It is found that the number density of cloud candidates at z = 2.5 is too small to account for the observed number of lines. If Ly-alpha clouds have their origins in primordial density fluctuations, the CDM power spectrum does not have sufficient power on subgalactic scales to account for the observed structures. 17 refs.
- OSTI ID:
- 6851990
- Journal Information:
- Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 349; ISSN ASJOA; ISSN 0004-637X
- Country of Publication:
- United States
- Language:
- English
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