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Galaxy X [1] [2] is a postulated dark satellite dwarf galaxy of the Milky Way Galaxy.If it exists, it would be composed mostly of dark matter and interstellar gas with few stars. [1] [3] Its proposed location is some 90 kpc (290 kly) from the Sun, [1] [3] [4] behind the disk of the Milky Way, [1] and some 12 kpc (39 kly) in extent. [4]
The categories of dark matter are set with respect to the size of a protogalaxy (an object that later evolves into a dwarf galaxy): dark matter particles are classified as cold, warm, or hot if their FSL is much smaller (cold), similar to (warm), or much larger (hot) than a protogalaxy.
The Axion Dark Matter Experiment (ADMX, also written as Axion Dark Matter eXperiment in the project's documentation) is an experiment that uses a resonant microwave cavity within a large superconducting magnet to search for cold dark matter axions in the local galactic dark matter halo. Unusual for a dark matter detector, it is not located deep ...
In April 2023, a study investigated four extremely redshifted objects discovered by the James Webb Space Telescope. [5] Their study suggested that three of these four, namely JADES-GS-z13-0, JADES-GS-z12-0, and JADES-GS-z11-0, are consistent with being point sources, and further suggested that the only point sources which could exist in this time and be bright enough to be observed at these ...
The Large Underground Xenon experiment (LUX) aimed to directly detect weakly interacting massive particle (WIMP) dark matter interactions with ordinary matter on Earth. . Despite the wealth of (gravitational) evidence supporting the existence of non-baryonic dark matter in the Universe, [1] dark matter particles in our galaxy have never been directly detected in an expe
The very large mass of this cluster makes it useful for the study of dark matter and gravitational lensing. [7] [8] At the time of its discovery in 2008, one of the lensed galaxies, A1689-zD1, was the most distant galaxy found. [9] [10]
Nearly all simulations form dark matter halos which have "cuspy" dark matter distributions, with density increasing steeply at small radii, while the rotation curves of most observed dwarf galaxies suggest that they have flat central dark matter density profiles ("cores"). [1] [2] Several possible solutions to the core-cusp problem have been ...
2) those that encompass "the clusters as a whole." Because cold dark matter possesses a lower velocity, it could be the source of "smaller, galaxy-sized lumps," as shown in the image. [4] Hot dark matter, then, should correspond to the formation of larger mass aggregates that surround whole galaxy clusters.