Estimating the Parameters of Extended Gravity Theories with the Schwarzschild Precession of S2 Star
Universe, 2021 After giving a short overview of previous results on constraining of Extended Gravity by stellar orbits, we discuss the Schwarzschild orbital precession of S2 star assuming the congruence with predictions of General Relativity (GR). At the moment, the S2
Duško Borka +4 more
doaj +1 more source
The effect of fluctuating fuzzy axion haloes on stellar dynamics: a stochastic model [PDF]
Monthly notices of the Royal Astronomical Society, 2019 Fuzzy dark matter of ultralight axions has gained attention, largely in light of the galactic scale problems associated with cold dark matter.
A. El-Zant +3 more
semanticscholar +1 more source
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
doaj +1 more source
Stellar Dynamics and Stellar Phenomena Near a Massive Black Hole [PDF]
, 2017 Most galactic nuclei harbor a massive black hole (MBH), whose birth and evolution are closely linked to those of its host galaxy. The unique conditions near the MBH—high velocity and density in the steep potential of a massive singular relativistic ...
T. Alexander
semanticscholar +1 more source
Stellar dynamics in unimodular gravity [PDF]
, 2019 Unimodular gravity provides a theoretical framework that allows for non-conservation of energy-momentum, with possible implications for the cosmological constant problem.
J. Astorga-Moreno +3 more
semanticscholar +1 more source
Stellar Dynamics and Star Formation Histories of z ∼ 1 Radio-loud Galaxies [PDF]
, 2017 We investigate the stellar kinematics and stellar populations of 58 radio-loud galaxies of intermediate luminosities (L3 GHz > 1023 W Hz−1) at 0.6 < z < 1. This sample is constructed by cross-matching galaxies from the deep VLT/VIMOS LEGA-C spectroscopic
I. Barišić +20 more
semanticscholar +1 more source
Orbits, masses and dynamical parallaxes of 12 visual binary systems [PDF]
Serbian Astronomical Journal, 2003 In this paper the preliminary orbital elements are presented for the following double stars: WDS 00153+4412 = A 1256 AB, WDS 00470+2315 = HU 413, WDS 00520+3154 = A 924, WDS 01036+6341 = MLR 87, WDS 01131+2942 = A 1260, WDS 01158+0947 = A 2102, WDS 01200-
Olević Dragomir M. +3 more
doaj +1 more source
STEADY-STATE RELATIVISTIC STELLAR DYNAMICS AROUND A MASSIVE BLACK HOLE [PDF]
, 2015 A massive black hole (MBH) consumes stars whose orbits evolve into the small phase-space volume of unstable orbits, the “loss cone,” which take them into the MBH, or close enough to interact strongly with it.
Ben Bar-Or, T. Alexander
semanticscholar +1 more source
Efficient solution of the anisotropic spherically aligned axisymmetric Jeans equations of stellar hydrodynamics for galactic dynamics [PDF]
Monthly notices of the Royal Astronomical Society, 2019 I present a flexible solution for the axisymmetric Jeans equations of stellar hydrodynamics under the assumption of an anisotropic (three-integral) velocity ellipsoid aligned with the spherical polar coordinate system.
M. Cappellari
semanticscholar +1 more source
Secular dynamics of binaries in stellar clusters – II. Dynamical evolution [PDF]
Monthly notices of the Royal Astronomical Society, 2019 Dense stellar clusters are natural sites for the origin and evolution of exotic objects such as relativistic binaries (potential gravitational wave sources) and blue stragglers.
C. Hamilton, R. Rafikov
semanticscholar +1 more source