期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 437, 期 3, 页码 2531-2541出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stt2066
关键词
galaxies: general; galaxies: kinematics and dynamics; dark matter
Modified Newtonian dynamics (MOND) predicts a number of laws that galactic systems should obey irrespective of their complicated, haphazard and mostly unknowable histories - as Kepler's laws are obeyed by planetary systems. The main purpose of this work is to show how, and to what extent, these MOND laws follow from only the paradigm's basic tenets: departure from standard dynamics at accelerations a less than or similar to a(0) and space-time scale invariance in the limit a < a(0). Such predictions will be shared by all MOND theories that embody these premises. This is important because we do not know which of the existing MOND theories, if any, is a step in the right direction. In the Newtonian dynamics plus dark matter paradigm, the validity of such clear-cut laws - which tightly constrain baryons, 'dark matter' and their mutual relations - is contrary to expectations.
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