In modern models of physical cosmology, a dark matter halo is a basic unit of cosmological structure. It is a hypothetical region that has decoupled from cosmic expansion and contains …

2020年9月2日 · Here we report a cosmological simulation of the formation of present-day haloes over the full range of observed halo masses (20 orders of magnitude) when dark matter is …

暗物质晕是在银河中心算起的100,000至300,000光年空间内最大的唯一结构，它也是银河系最神秘的部分。

2024年6月22日 · Our results highlight, not only the nuanced relationship between dark matter halo formation and the underlying cosmology, but also the potential of dark matter halo shape …

2024年11月13日 · One of the few known dark haloes smaller than a galaxy was discovered in the triple source plane strong lens system J0946+1006. Previous studies have found that this …

2023年10月2日 · Without relying on a spherical or ellipsoidal collapse model, we analytically derive the halo mass function and cuspy halo density (inner slope of −4/3) based on the mass …

2024年6月27日 · Here, we present a new constraint on its present shape by directly measuring the evolution of the Galactic disk warp with time, as traced by accurate distance estimates and …

A dark halo is the inferred halo of invisible material (dark matter) that permeates and surrounds individual galaxies, as well as groups and clusters of galaxies. Evidence for the existence of …

Dark matter halos—and the galaxies that reside within them—form from small seeds sown by whatever process sets the initial pattern of overdensities and underdensities in all of the …

Dark matter halos are the building blocks of the cosmic large-scale structures and the bridges between the dark and luminous sector of the Universe. They are diverse in internal structure,...