Results 1 to 10 of about 3,529,940 (309)

Gravitational Lensing & Stellar Dynamics [PDF]

open access: greenEAS 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 ...
L.V.E. Koopmans
core   +6 more sources

Stellar dynamics and black holes [PDF]

open access: greenPramana, 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.Comment:
DAVID MERRITT
core   +5 more sources

Problems of collisional stellar dynamics [PDF]

open access: green, 2011
To appear in Bulletin of the Astronomical Society of India, Chandra Centennial Issue, eds D.J.
Douglas C. Heggie
semanticscholar   +6 more sources

Grigori Kuzmin and Stellar Dynamics

open access: yesOpen Astronomy, 2011
Grigori Kuzmin was a very gifted dynamicist and one of the towering figures in the distinguished history of the Tartu Observatory. He obtained a number of important results in relative isolation which were later rediscovered in the West.
Zeeuw P. Tim de, Ven Glenn van de
doaj   +3 more sources

Internal rotation of red giants by asteroseismology [PDF]

open access: yesEPJ Web of Conferences, 2013
We present an asteroseismic approach to study the dynamics of the stellar interior in red giant stars by asteroseismic inversion of the splittings induced by the stellar rotation on the oscillation frequencies.
Christensen-Dalsgaard J.   +14 more
doaj   +3 more sources

SECULAR STELLAR DYNAMICS NEAR A MASSIVE BLACK HOLE [PDF]

open access: bronze, 2011
The angular momentum evolution of stars close to massive black holes (MBHs) is driven by secular torques. In contrast to two-body relaxation, where interactions between stars are incoherent, the resulting resonant relaxation (RR) process is characterized
Ann-Marie Madigan   +2 more
openalex   +3 more sources

Stellar dynamics around transient co-rotating spiral arms

open access: yesEPJ Web of Conferences, 2012
Spiral density wave theory attempts to describe the spiral pattern in spiral galaxies in terms of a long-lived wave structure with a constant pattern speed in order to avoid the winding dilemma.
Cropper M., Grand R.J.J., Kawata D.
doaj   +3 more sources

Perspectives on the physics of late-type stars from beyond low earth orbit, the moon and mars [PDF]

open access: yesnpj Microgravity
With 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
doaj   +2 more sources

On the Orbital Periods for a Particular Case of Spherical Symmetry [PDF]

open access: yesSerbian 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. Both time and angle dependence of the distance to the centre for the orbit of
Ninković, S., Jovanović, B.
doaj   +3 more sources

Compact Binary Coalescences: Astrophysical Processes and Lessons Learned

open access: yesGalaxies, 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
doaj   +1 more source

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