WebThe ‘critical density’ is the average density of matter required for the Universe to just halt its expansion, but only after an infinite time. A Universe with the critical density is said to be flat. In his theory of general relativity, Einstein demonstrated that the gravitational effect of matter is to curve the surrounding space.In a Universe full of matter, both its overall … WebA scenario of the inflaton evolution from cosmic inflation and matter creation to dark matter/dark energy today is presented. To start with, a model of the inflationary phase of the inflaton is introduced. The inflaton…

Mathematicians offer unified theory of dark matter, dark energy ...

WebAbstract: It has been known for nearly 20 yr that the pseudo-phase-space density profile of equilibrium simulated dark matter halos, ρ(r)/σ^3(r), is … WebThis is the Boltzmann equation for photons. 3 Cold Dark Matter The main di erence between the distribution for dark matter and that for photons is that dark matter doesn’t … order of the storm ac odyssey shipwreck cove

Dark Matter Distribution - an overview ScienceDirect Topics

http://hitoshi.berkeley.edu/290E/dark.ppt Dark matter is a hypothetical form of matter thought to account for approximately 85% of the matter in the universe. Dark matter is called "dark" because it does not appear to interact with the electromagnetic field, which means it does not absorb, reflect, or emit electromagnetic radiation and is, therefore, difficult to detect. … See more Early history The hypothesis of dark matter has an elaborate history. In the appendices of the book 'Baltimore lectures on molecular dynamics and the wave theory of light' where the main text … See more Galaxy rotation curves The arms of spiral galaxies rotate around the galactic center. The luminous mass density of a spiral galaxy decreases as one goes from the center to the outskirts. If luminous mass were all the matter, then we can model the … See more If dark matter is made up of subatomic particles, then millions, possibly billions, of such particles must pass through every square centimeter of the Earth each second. Many experiments aim to test this hypothesis. Although WIMPs have been the main search … See more Dark matter regularly appears as a topic in hybrid periodicals that cover both factual scientific topics and science fiction, and dark matter itself has been referred to as "the stuff of science fiction". Mention of dark matter is made in works of fiction. In such cases, it is … See more In standard cosmology, matter is anything whose energy density scales with the inverse cube of the scale factor, i.e., ρ ∝ a . This is in contrast to radiation, which scales as the … See more Composition There are various hypotheses about what dark matter could consist of, as set out in the table below. See more Because dark matter has not yet been identified, many other hypotheses have emerged aiming to explain the same observational phenomena without introducing a new unknown type of matter. The most common method is to modify general relativity. … See more WebDec 31, 2012 · The main objective of this article is to derive new gravitational field equations and to establish a unified theory for dark energy and dark matter. The gravitational field … how to treat burns naturally