Results 1 to 10 of about 4,688 (310)
Gravitational Lensing & Stellar Dynamics [PDF]
EAS Publications Series, 2006 Strong gravitational lensing and stellar dynamics provide two complementary and orthogonal constraints on the density profiles of galaxies. Based on spherically symmetric, scale-free, mass models, it is shown that the combination of both techniques is powerful in breaking the mass-sheet and mass-anisotropy degeneracies.
L.V.E. Koopmans
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A Physicist’s View of Stellar Dynamics: Dynamical Instability of Stellar Systems [PDF]
Highlights of Astronomy, 2005 AbstractI argue that the widely adopted framework of stellar dynamics survived since 1940s, is not fitting the current knowledge on non-linear systems. Borrowed from plasma physics when several fundamental features of perturbed non-linear systems were unknown, that framework ignores the difference in the role of perturbations in two different classes ...
V. G. Gurzadyan
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Stellar dynamics and black holes [PDF]
Pramana, 2011 Chandrasekhar's most important contribution to stellar dynamics was the concept of dynamical friction. I briefly review that work, then discuss some implications of Chandrasekhar's theory of gravitational encounters for motion in galactic nuclei.
DAVID MERRITT
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Stellar Motions and Stellar Dynamics [PDF]
Transactions of the International Astronomical Union, 1962 The texts of the twelve prepared contributions, often in abbreviated form, are given first; they are followed by a summary of the discussion on all the contributions considered together.
A. Blaauw +8 more
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Perspectives on the physics of late-type stars from beyond low earth orbit, the moon and mars [PDF]
npj MicrogravityWith the new discoveries enabled thanks to the recent space missions, stellar physics is going through a revolution. However, these discoveries opened the door to many new questions that require more observations.
Savita Mathur, Ângela R. G. Santos
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On the orbital periods for a particular case of spherical symmetry [PDF]
Serbian Astronomical Journal, 2008 A particular case of steady state and spherical symmetry - the so-called logarithmic potential introduced as the first approximation for dark coronae of galaxies - is studied.
Ninković S., Jovanović B.
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Compact Binary Coalescences: Astrophysical Processes and Lessons Learned
Galaxies, 2022 On 11 February 2016, the LIGO and Virgo scientific collaborations announced the first direct detection of gravitational waves, a signal caught by the LIGO interferometers on 14 September 2015, and produced by the coalescence of two stellar-mass black ...
Mario Spera +2 more
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Lattice stellar dynamics [PDF]
Monthly Notices of the Royal Astronomical Society, 1995 We describe a technique for solving the combined collisionless Boltzmann and Poisson equations in a discretised, or lattice, phase space. The time and the positions and velocities of `particles' take on integer values, and the forces are rounded to the nearest integer. The equations of motion are symplectic. In the limit of high resolution, the lattice
Syer, D., Tremaine, S.
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Universe, 2022 We estimate the parameters of the Hybrid Palatini gravity model with the Schwarzschild precession of S-stars, specifically of the S2, S38 and S55 stars. We also take into account the case of bulk mass distribution near the Galactic Center. We assume that
Duško Borka +4 more
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