Galaxy dark matter halos as a research area focuses on the structure, composition, and dynamical role of extended, non-luminous mass distributions surrounding galaxies, investigated primarily through gravitational effects such as rotation curves, strong and weak lensing, satellite kinematics, and large-scale structure. This field addresses halo density profiles, concentration–mass relations, subhalo populations, and their dependence on cosmological parameters and dark matter models (e.g., cold vs. warm). It also studies baryon–halo interactions, including feedback-driven core formation, galaxy–halo connection (abundance matching, halo occupation), and the impact of halos on galaxy formation, evolution, and environmental processes within the cosmological context.
Astronomers using W. M. Keck Observatory on Maunakea, Hawaiʻi Island have found compelling evidence of a dark matter-deficient dwarf galaxy, FCC 224. This ultra-diffuse galaxy is located on the outskirts of the Fornax Cluster, ...
Astronomy
Apr 15, 2025
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Every galaxy is thought to form at the center of a dark matter halo—a region of gravitationally bound matter that extends far beyond the visible boundaries of a galaxy. Stars are formed when gravity within dark matter halos ...
Astronomy
Apr 8, 2025
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Dr. Sukanya Chakrabarti, the Pei-Ling Chan Endowed Chair in the College of Science at The University of Alabama in Huntsville (UAH), and her team have pioneered the use of gravitational acceleration measurements of binary ...
Astronomy
Feb 25, 2025
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An international team of researchers has found dark matter dominating the halos of two supermassive black holes in galaxies roughly 13 billion light years away. Their study, published in The Astrophysical Journal, gives new ...
Astronomy
Feb 7, 2025
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A fuzzy form of dark matter may clump up to become the cores of galaxies, according to new research.
Astronomy
Jan 15, 2025
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Researchers led by Nanyang Technological University, Singapore (NTU Singapore) have developed a breakthrough technique that could lay the foundations for detecting the universe's "dark matter" and bring scientists closer ...
Astronomy
Jan 9, 2025
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The standard model for how galaxies formed in the early universe predicted that the James Webb Space Telescope (JWST) would see dim signals from small, primitive galaxies. But data are not confirming the popular hypothesis ...
Astronomy
Nov 12, 2024
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While various studies have hinted at the existence of dark matter, its nature, composition and underlying physics remain poorly understood.
Deep in outer space, invisible hands mold the universe. One is dark matter, an unseen substance thought to bind distant galaxies. The other is dark energy, a force believed to push stellar structures apart with gravity-defying ...
Quantum Physics
May 15, 2024
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Scientific evidence for dark matter comes from observing how it influences the motion of stars and galaxies. Scientists believe that dark matter may consist of particles. To search for these particles and their billiard ball-like ...
General Physics
May 7, 2024
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