Results 11 to 20 of about 67,372 (198)
On “Hard Stars” in General Relativity [PDF]
Annales Henri Poincaré, 2019 We study spherically symmetric solutions to the Einstein-Euler equations which model an idealized relativistic neutron star surrounded by vacuum. These are barotropic fluids with a free boundary, governed by an equation of state which sets the speed of sound equal to the speed of light.
Fournodavlos, G, Schlue, V
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Anisotropic stars in general relativity [PDF]
Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, 2003 We present a class of exact solutions of Einstein's gravitational field equations describing spherically symmetric and static anisotropic stellar type configurations. The solutions are obtained by assuming a particular form of the anisotropy factor.
Mak, MK, Harko, T
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General relativistic boson stars [PDF]
Classical and Quantum Gravity, 2003 The authors discuss detailed consequences of an assumed existing complex scalar field in nature. Especially, they look for the result of the collapse of such bosons. In their notation, every compact object built by such a boson cloud, is called a boson star. (This means, these objects need not share many properties with typical fixed stars like our sun.
Schunck, Franz E., Mielke, Eckehard W.
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On Faber Polynomials Generated by An m-Star [PDF]
Mathematics of Computation, 1994 In this paper, we study the Faber polynomials F n
Bartolomeo, J., He, Matthew
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BOSON STARS WITH GENERIC SELF-INTERACTIONS [PDF]
International Journal of Modern Physics D, 2000 We study boson star configurations with generic, but not nontopological, self-interaction terms. When compared with the usual λ|ψ|4 potential, similar results for masses and number of particles appear. However, changes are noticed in the order of a few percent of the star mass.
Schunck, Franz E., Torres, Diego F.
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Ideal stars and General Relativity [PDF]
General Relativity and Gravitation, 2007 We study a system of differential equations that governs the distribution of matter in the theory of General Relativity. The new element in this paper is the use of a dynamical action principle that includes all the degrees of freedom, matter as well as metric.
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On the First Generation of Stars [PDF]
Monthly Notices of the Royal Astronomical Society, 2006 Submitted to ...
Silk, Joseph, Langer, Mathieu
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Ramsey goodness and generalized stars
European Journal of Combinatorics, 2010 Given a graph \(G\) with chromatic number \(\chi(G)\) and chromatic surplus \(s = s(G)\), a graph \(H\) is said to be \(G\)-good if the Ramsey number \(r(G,H)\) satisfies \[ r(G, H) = (\chi(G) - 1)(|H| - 1) + s. \] For arbitrary graphs \(G\) and \(H\), the related graphs \(K_1 + G\) and \(K_1 + nH\) are considered with \(s = s(G)\) and \(h = |H|\), and
Qizhong Lin, Yusheng Li 0001, Lin Dong
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Star configurations on generic hypersurfaces
Journal of Algebra, 2014 Let $F$ be a homogeneous polynomial in $S = \mathbb{C}[x_0,...,x_n]$. Our goal is to understand a particular polynomial decomposition of $F$; geometrically, we wish to determine when the hypersurface defined by $F$ in $\mathbb{P}^n$ contains a star configuration.
Carlini E +2 more
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Next Generation of Star Patterns
CoRR, 2018 In this paper we present two new ideas for generating star patterns and filling the gaps during the tile operation. Firstly, we introduce a novel parametric method based on concentric circles for generating stars and rosettes. Using proposed method, completely different stars and rosettes and a set of new and complex star patterns convert to each other
Hadi Mansourifar, Weidong Shi
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