How Zwicky already ruled out modified gravity theories without dark matter
نویسندگان
چکیده
منابع مشابه
Modified Gravity: Cosmology without dark matter or a cosmological constant
We explore the cosmological consequences of Modified Gravity (MOG), and find that it provides, using a minimal number of parameters, good fits to data, including CMB temperature anisotropy, galaxy mass power spectrum, and supernova luminosity-distance observations. The MOG cosmology is flat and predicts an age of the universe of ∼ 34 billion years.
متن کاملModified Gravity: Cosmology without dark matter or Einstein’s cosmological constant
We explore the cosmological consequences of Modified Gravity (MOG), and find that it provides, using a minimal number of parameters, good fits to data, including CMB temperature anisotropy, galaxy power spectrum, and supernova luminosity-distance observations. The MOG cosmology predicts a flat universe with an accelerating expansion and an age of ∼14 billion years.
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The central densities of dark matter (DM) halos are much lower than predicted in cold DM models of structure formation. Confirmation that they have cores with a finite central density would allow us to rule out many popular types of collisionless particle as candidates for DM. Any model that leads to cusped halos (such as cold DM) is already facing serious difficulties on small scales and hot D...
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Dynamical mass discrepancies in galaxies have two possible explanations: the existence of large amounts of dark matter or the breakdown of Newtonian gravity. True dark matter halos of galaxies could differ in several respects from apparent halos inferred from misinterpreted modified gravity, and we discuss two observational tests to probe these differences. Modified gravity gives generic, geome...
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ژورنال
عنوان ژورنال: Fortschritte der Physik
سال: 2017
ISSN: 0015-8208
DOI: 10.1002/prop.201600050