منابع مشابه
Clusters of galaxies with modified Newtonian dynamics (MOND)
X-ray emitting clusters of galaxies are considered in the context of modified Newtonian dynamics (MOND). I show that self-gravitating isothermal gas spheres are not good representations of rich clusters with respect to the radial gas density distribution as indicated by the X-ray surface brightness. Pure gas spheres with a density distribution described by a β model, as observed, also fail beca...
متن کاملModified Newtonian Dynamics (MOND): Observational Phenomenology and Relativistic Extensions
A wealth of astronomical data indicate the presence of mass discrepancies in the Universe. The motions observed in a variety of classes of extragalactic systems exceed what can be explained by the mass visible in stars and gas. Either (i) there is a vast amount of unseen mass in some novel form - dark matter - or (ii) the data indicate a breakdown of our understanding of dynamics on the relevan...
متن کاملModified Newtonian Dynamics as a Prediction of General Relativity
We treat the physical vacuum as a featureless relativistic continuum in motion, and explore its consequences. Proceeding in a step-by-step manner, we are able to show that the equations of classical electrodynamics follow from the motion of a space-filling fluid of neutral spinors which we identify with neutrinos. The model predicts that antimatter has negative mass, and that neutrinos are matt...
متن کاملA MODIFIED THEORY OF NEWTONIAN MECHANICS
A specific form of the inertial law is presented by which we can gain a deeper insight into the essence of mass and inertia. In this modified theory, there is no need to keep the concept of absolute space and Newton's third law as principles, By introducing a convenient form for gravitational law the coupling constant G becomes a function of inertial parameters of the universe
متن کاملThe modified Newtonian dynamics—MOND and its implications for new physics
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ژورنال
عنوان ژورنال: Journal of Astrophysics and Astronomy
سال: 2017
ISSN: 0250-6335,0973-7758
DOI: 10.1007/s12036-017-9479-0