Results 21 to 30 of about 1,470 (219)

How does dark matter affect compact star properties and high density constraints of strongly interacting matter [PDF]

open access: yesEPJ Web of Conferences, 2022
We study the impact of asymmetric bosonic dark matter on neutron star properties, including possible changes of tidal deformability, maximum mass, radius, and matter distribution inside the star.
Sagun Violetta   +4 more
doaj   +1 more source

A FRAMEWORK FOR QUANTIFYING THE DEGENERACIES OF EXOPLANET INTERIOR COMPOSITIONS [PDF]

open access: yesThe Astrophysical Journal, 2010
20 pages, 10 figures, published in ...
Rogers, Leslie Anne, Seager, Sara
openaire   +2 more sources

Addressing Rank Degeneracy in Constraint-Reduced Interior-Point Methods for Linear Optimization [PDF]

open access: yesJournal of Optimization Theory and Applications, 2013
The authors investigate ways to efficiently deal with rank-degeneracy in linear optimization (that is, the dual problem has many more constraints than variables). Specifically, the first constraint-reduced primal-dual interior-point scheme proposed is based on a type of regularization of the Newton-KKT system, and the second on a new type of search ...
Winternitz, Luke B.   +2 more
openaire   +2 more sources

Null controllability of a population dynamics with interior degeneracy

open access: yesElectronic Journal of Differential Equations, 2017
Dans cet article, nous traitons de la contrôlabilité nulle d'un modèle de dynamique de population avec une diffusion dégénérée intérieure. À cette fin, nous avons d'abord prouvé une nouvelle estimation de Carleman pour le système adjoint complet et ensuite nous en déduisons une inégalité d'observabilité appropriée qui sera nécessaire pour établir l ...
Idriss Boutaayamou, Younes Echarroudi
openaire   +4 more sources

Operators of order \(2n\) with interior degeneracy

open access: yesDiscrete and Continuous Dynamical Systems - S, 2020
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Fragnelli, Genni   +3 more
openaire   +4 more sources

Warm giant exoplanet characterisation: current state, challenges and outlook

open access: yesFrontiers in Astronomy and Space Sciences, 2023
The characterisation of giant exoplanets is crucial to constrain giant planet formation and evolution theory and for putting the solar-system’s giant planets in perspective. Typically, mass-radius (M-R) measurements of moderately irradiated warm Jupiters
Simon Müller, Ravit Helled
doaj   +1 more source

The partial boundary value conditions of nonlinear degenerate parabolic equation

open access: yesBoundary Value Problems, 2022
The stability of the solutions to a parabolic equation ∂ u ∂ t = Δ A ( u ) + ∑ i = 1 N b i ( x , t ) D i u − c ( x , t ) u − f ( x , t ) $$ \frac{\partial u}{\partial t} = \Delta A(u) +\sum_{i=1}^{N}b_{i}(x,t)D_{i}u-c(x,t)u-f(x,t) $$ with homogeneous ...
Yuan Zhi, Huashui Zhan
doaj   +1 more source

Modeling Quantum Particles Falling into a Black Hole: The Deep Interior Limit

open access: yesUniverse, 2023
In this paper, we construct a solvable toy model of the quantum dynamics of the interior of a spherical black hole with falling spherical scalar field excitations.
Alejandro Perez   +2 more
doaj   +1 more source

ON THE PROBLEM OF THE NUMERICAL MODEL CONSTRUCTION OF ZERO-AGE SUBSTARS

open access: yesOdessa Astronomical Publications, 2017
The numerical modelling of substars inner structure is analysed and main definitions are suggested. Here we present results of calculation of degeneracy parameter ψ, permitting to make calculate the dependence of number of free electrons on function ...
V. A. Zakhozhaj   +4 more
doaj   +1 more source

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