Accretion as a research area investigates the physical processes by which diffuse material gravitationally aggregates to form larger astrophysical structures, including planets, stars, black holes, and galaxies. It encompasses the study of accretion disks, angular momentum transport, magnetohydrodynamic instabilities, radiative transfer, and the interplay between accretion flows and outflows or jets. This field integrates analytical theory, numerical simulations, and multiwavelength observations to quantify mass accretion rates, efficiency of gravitational energy conversion into radiation, and feedback on the surrounding medium, thereby constraining models of structure formation, compact object growth, and high-energy phenomena in various cosmic environments.
New research published in the journal Science reveals the red planet's mantle preserves a record of its violent beginnings.
Planetary Sciences
Aug 28, 2025
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92
A team led by Prof. Mao Jirong from the Yunnan Observatories of the Chinese Academy of Sciences, in collaboration with international researchers, has recently published a study in The Astrophysical Journal confirming the ...
Astronomy
Aug 28, 2025
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111
A research team led by Prof. Jiao Chengliang at the Yunnan Observatories of the Chinese Academy of Sciences, along with collaborators, has introduced a self-consistent model that addresses long-unresolved theoretical gaps ...
Astronomy
Aug 22, 2025
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91
In a study published in Astronomy & Astrophysics, an international team of astronomers has uncovered for the first time the coexistence of dual fragmentation modes and multi-scale dynamic material accretion within a "hub-filament ...
Astronomy
Aug 8, 2025
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64
Instead of a tempest in a teapot, imagine the cosmos in a canister. Scientists have performed experiments using nested, spinning cylinders to confirm that an uneven wobble in a ring of electrically conductive fluid like liquid ...
Planetary Sciences
Jul 7, 2025
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75
Southwest Research Institute has collaborated with Yale University to summarize the scientific community's notable progress in advancing the understanding of the formation and evolution of the inner rocky planets, the so-called ...
Planetary Sciences
Jun 18, 2025
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104
A new University of Leicester study shows how the uncontrolled growth of a distant supermassive black hole (SMBH) is revealed by the ejection of excess matter as a high velocity wind.
Astronomy
Jun 17, 2025
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85
Russian astronomers from the Sternberg Astronomical Institute (SAI) have analyzed long-term observational data of a peculiar microquasar designated SS 433. Results of the new study, published May 13 in the Physics-Uspekhi ...
The monster black hole lurking at the center of galaxy M87 is an absolute beast. It is one of the largest in our vicinity and was the ideal first target for the Event Horizon Telescope. Scientists have taken a fresh look ...
Astronomy
Jun 10, 2025
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87
The blazar BL Lacertae, a supermassive black hole surrounded by a bright disk and jets oriented toward Earth, provided scientists with a unique opportunity to answer a longstanding question: How are X-rays generated in extreme ...
Astronomy
May 6, 2025
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209
