cold dark matter


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cold dark matter

(CDM) See dark matter.

cold dark matter

[¦kōld ′därk ‚mad·ər]
(astronomy)
A hypothetical type of dark matter consisting of particles that would have been in thermal equilibrium while traveling at nonrelativistic velocities in the early universe; possibilities include axions, photinos, gravitinos, heavy magnetic monopoles, and weakly interacting massive particles.
References in periodicals archive ?
Ever since the invention of Cold Dark Matter (1984) and the first CDM N-body cosmological simulations which were essential for determining the characteristics of dark matter, these simulations were at the core of calculating predictions on scale where structure has formed.
Cold dark matter (which is slower, left) clumps more easily than warm dark matter (faster, right), as apparent in these simulations of a 5-million-light-year-wide box
Study regarding Cold Dark Matter (CDM) and X-Cold Dark Matter (XCDM)
The astronomers have their cold dark matter theory--and marketers have "brand equity." The analogy isn't perfect--brands certainly emit energy when firms like Nabisco and General Foods trade hands for more than three times their book value.
This missing mass, estimated to be at least 90% more than the known observable content of the universe, has been conjectured to be either cold dark matter or unknown exotic particles.
Are Halos of Collisionless Cold Dark Matter Collisionless?
His ideas laid the foundations for the modern understanding of galaxy formation, he carried out one of the first calculations of temperature anisotropies in the cosmic microwave background and he is a pioneer of the current cosmological paradigm, the cold dark matter model.
Based on the recent results of the precision measurements of the cosmic microwave background (CMB) anisotropy by the Wilkinson Microwave Anisotropy Probe (WMAP) [13] and the Planck satellite [14, 15], the energy budget of the present universe is determined to be composed of 73% dark energy, 23% cold dark matter, and only 4% from baryonic matter.
According to the dark matter theory derived from the Standard Model (this dark matter is called "cold dark matter"), the large density of dark matter at a galaxy cluster's core tightly binds the BCG to the center.
In the 1980s, Bolshoi co-Principal Investigator Joel Primack (now at University of California, Santa Cruz) coauthored the theory dubbed cold dark matter (CDM).
Its programme launches with a solo show of Cornelia Parker that includes her signature piece from 1991, Cold Dark Matter; An Exploded View, on loan from Tate.
Professor Frenk is one of the world's foremost researchers behind the theory of cold dark matter - a substance believed to make up 85% of the mass of the Universe and thought to be one of the building blocks of galaxy formation.