Results 171 to 180 of about 3,529,940 (309)

Dynamics of Stellar Collisions

open access: yes, 2000
I compare gas-dynamical and stellar-dynamical models of collisions. These two models have distinctly different physics; for example, shocks introduce irreversibility in gas systems, while stellar systems evolve in a completely reversible fashion. Nonetheless, both models yield broadly similar results, suggesting that analogies between gas and stellar ...
openaire   +2 more sources

The Escape Velocity Profile of the Milky Way from Gaia DR3

open access: yesThe Astrophysical Journal
The escape velocity profile of the Milky Way offers a crucial and independent measurement of its underlying mass distribution and dark matter (DM) properties.
Cian Roche   +4 more
doaj   +1 more source

Collisional Shaping of Nuclear Star Cluster Density Profiles

open access: yesThe Astrophysical Journal Letters
A supermassive black hole surrounded by a dense, nuclear star cluster resides at the center of many galaxies. In this dense environment, high-velocity collisions frequently occur between stars.
Sanaea C. Rose, Morgan MacLeod
doaj   +1 more source

Fractional Dynamics in Galactic Nuclei: Nonlocal Transport, Transient Phenomena, and the Nullification of the Schwarzschild Barrier

open access: yesThe Astrophysical Journal Letters
We investigate the application of fractional calculus to model stellar dynamics, focusing on resonant relaxation (RR) near a supermassive black hole. Standard theories use the local Fokker–Planck (FP) equation, restricted to Gaussian processes under the ...
Pau Amaro Seoane
doaj   +1 more source

Stellar Evolution and Dynamics in Star Clusters [PDF]

open access: green, 1997
Simon Portegies Zwart   +2 more
openalex   +1 more source

Stellar dynamics [PDF]

open access: yesJournal of the Franklin Institute, 1897
openaire   +1 more source

Mass Ejection Driven by Sudden Energy Deposition in Stellar Envelopes

open access: yesThe Astrophysical Journal
A number of stellar astrophysical phenomena, such as tidal novae and planetary engulfment, involve sudden injection of subbinding energy in a thin layer within the star, leading to mass ejection of the stellar envelope.
Nicholas J. Corso, Dong Lai
doaj   +1 more source

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