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Sub-GeV dark matter has been used to explain the positron excess in the Galactic Center observed by INTEGRAL, excess gamma rays from the Galactic Center [7] and extragalactic sources. It has also been suggested that light dark matter may explain a small discrepancy in the measured value of the fine structure constant in different experiments. [8]
In astronomy, dark matter is an invisible and hypothetical form of matter that does not interact with light or other electromagnetic radiation.Dark matter is implied by gravitational effects which cannot be explained by general relativity unless more matter is present than can be observed.
Direct detection of dark matter is the science of attempting to directly measure dark matter collisions in Earth-based experiments. Modern astrophysical measurements, such as from the cosmic microwave background , strongly indicate that 85% of the matter content of the universe is unaccounted for. [ 1 ]
The authors said that if a particular set of parameters is true, we should be able to observe a certain kind of dark matter within Earth’s ionosphere. That dark matter is not completely dark, as ...
The new map, a representation of all matter detected in the foreground of the observed galaxies, covers a quarter of the southern hemisphere’s sky. Dark matter mapped using light from 100 ...
The LUX-ZEPLIN (LZ) Experiment is a next-generation dark matter direct detection experiment hoping to observe weakly interacting massive particles (WIMP) scatters on nuclei. [1] It was formed in 2012 by combining the LUX and ZEPLIN groups. It is currently a collaboration of 30 institutes in the US, UK, Portugal and South Korea.
By some dynamical measurements, we can deduce that the mass density of the dark matter is about . One can calculate the average separation between these particles by deducing the de-Broglie wavelength: λ = 2 π / m v {\displaystyle \lambda =2\pi /mv} , here m is the mass of the dark matter particle and v is the dispersion velocity of the halo.
Forms of matter that are poorly understood, such as dark matter and mirror matter. Ordinary matter that when placed under high pressure, may result in dramatic changes in its physical or chemical properties. Degenerate matter; Exotic atoms