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We propose a comprehensive theory of dark matter that explains the recent proliferation of unexpected observations in high-energy astrophysics. Cosmic ray spectra from ATIC and PAMELA require a WIMP (weakly interacting massive particle). with mass M 500–800 GeV that annihilates into leptons at a level well above that expected from a thermal relic.
Dark Matter: An undetected form of mass that emits little or no light but whose existence we infer from its gravitational influence. Dark Energy: An unknown form of energy that seems to be the source of a repulsive force causing the expansion of the universe to accelerate. Contents of Universe. • “Normal” Matter: . ~ 4.4%
1. Introduction to dark matter. 1.1 The early history of dark matter research. During the last 70 years, a new paradigm has emerged in which the matter visible to us in current telescopes only represents a small fraction of the total amount present in the Universe.
Dark matter is one of the greatest unsolved mysteries in cosmology at the present time. About 80% of the universe's gravitating matter is non-luminous, and its nature and distribution are for the most part unknown.
Dark matter is among the most important open problems in modern physics. Aimed at graduate students and researchers, this book describes the theo-retical and experimental aspects of the dark matter problem in particle physics, astrophysics and cosmology.
Jan 1, 2011 · In this paper, we will outline the history, astrophysical evidence, candidates, and detection methods of dark matter, with the goal to give the reader an accessible but rigorous introduction to...
In the standard cosmological model it is assumed that dark matter and dark energy drive the expansion of the Universe today, and at the beginning of the Universe radiation 3
dark matter we overview recent publications on sterile neutrinos, self-interacting dark matter, dibarions (hexaquarks), dark matter from primordial “bubbles”, primordial black holes as dark matter, axions escaping from neutron stars, and dark and usual matter interacting via the fifth
What Is Dark Matter? An elusive substance that per meates the universe exerts many detectable gravitational influences yet eludes direct detection. By Lisa Randall. y, familiar mat-ter. One of...
Dark Energy & Dark Matter. National Aeronautics and Space Administration. The two largest pieces of the Universe, dark matter and dark energy, are the two that we know the least about, yet nothing less than the ultimate fate of the Universe will be determined by them.
