Author ORCID Identifier
Document Type
Article
Publication Date
8-23-1999
Abstract
Two hypothesized solutions for the mass discrepancy problem are cold dark matter and modified Newtonian dynamics. The virtues and vices of these very different hypotheses are largely disjointed, making the process of distinguishing between them very dependent on how we weigh disparate lines of evidence. One clear difference is the nature of the principal mass constituent of the universe (cold dark matter or baryons). This difference in the baryon fraction (fb, ≈ 0.1 vs. 1) should leave a distinctive signature in the spectrum of fluctuations in the cosmic microwave background. Here I discuss some of the signatures that should be detectable in the near future. The most promising appears to be the ratio of the amplitudes of the first two peaks relative to the intervening trough.
Keywords
cosmic microwave background, cosmology: theory, early universe
Language
English
Publication Title
Astrophysical Journal
Rights
© The American Astronomical Society. All rights reserved. This content is free to access, download, and share. For all other uses, you must obtain permission to reuse content: https://journals.aas.org/article-charges-and-copyright/#AAS_material
Recommended Citation
Stacy S. McGaugh 1999. Distinguishing between Cold Dark Matter and Modified Newtonian Dynamics: Predictions for the Microwave Background. ApJ 523 L99
Manuscript Version
Final Publisher Version