Jul 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004iaus..220....3b&link_type=abstract
International Astronomical Union Symposium no. 220, held 21 - 25 July, 2003 in Sydney, Australia. Eds: S. D. Ryder, D. J. Pisano
Physics
25
Scientific paper
The competition between CDM and MOND to account for the `missing mass' phenomenon is asymmetric. MOND has clearly demonstrated that a characteristic acceleration a_0 underlies the data and understanding what gives rise to a_0 is an important task. The reason for MOND's success may lie in either the details of galaxy formation, or an advance in fundamental physics that reduces to MOND in a suitable limit. CDM has enjoyed great success on large scales. The theory cannot be definitively tested on small scales until galaxy formation has been understood because baryons either are, or possibly have been, dominant in all small-scale objects. MOND's predictive power is seriously undermined by its isolation from the rest of physics. In view of this isolation, the way forward is probably to treat CDM as an established theory to be used alongside relativity and electromagnetism in efforts to understand the formation and evolution of galaxies.
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