Zobrazeno 1 - 10
of 70
pro vyhledávání: '"Silbergleit, A. S."'
Autor:
Silbergleit, A. S.
Dark energy (DE) is not necessarily uniform when other sources of gravity are present: interaction with matter leads to its variation in space and time. We study cosmological implications of this fact by analyzing cosmological models in which DE dens
Externí odkaz:
http://arxiv.org/abs/1602.01705
Autor:
Chernin, A. D., Silbergleit, A. S.
We give a set of exact nonlinear closed--form solutions for the non-spherical collapse of pressure-less matter in Newtonian gravity, and indicate their possible cosmological applications. Keywords: Newtonian gravitation: free collapse, large-scale co
Externí odkaz:
http://arxiv.org/abs/1508.04111
Autor:
Salomon, M., Conklin, J. W., Kozaczuk, J., Berberian, J. E., Santiago, D. I., Keiser, G. M., Silbergleit, A. S., Worden, P.
In this paper, we present a method to measure the frequency and the frequency change rate of a digital signal. This method consists of three consecutive algorithms: frequency interpolation, phase differencing, and a third algorithm specifically desig
Externí odkaz:
http://arxiv.org/abs/1111.4521
Autor:
Everitt, C. W. F., DeBra, D. B., Parkinson, B. W., Turneaure, J. P., Conklin, J. W., Heifetz, M. I., Keiser, G. M., Silbergleit, A. S., Holmes, T., Kolodziejczak, J., Al-Meshari, M., Mester, J. C., Muhlfelder, B., Solomonik, V., Stahl, K., Worden, P., Bencze, W., Buchman, S., Clarke, B., Al-Jadaan, A., Al-Jibreen, H., Li, J., Lipa, J. A., Lockhart, J. M., Al-Suwaidan, B., Taber, M., Wang, S.
Publikováno v:
Phys.Rev.Lett.106:221101,2011
Gravity Probe B, launched 20 April 2004, is a space experiment testing two fundamental predictions of Einstein's theory of General Relativity (GR), the geodetic and frame-dragging effects, by means of cryogenic gyroscopes in Earth orbit. Data collect
Externí odkaz:
http://arxiv.org/abs/1105.3456
Akademický článek
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Publikováno v:
Astrophysical Journal 680, 1319 (2008)
We demonstrate that the corotation resonance affects only some non-axisymmetric g-mode oscillations of thin accretion disks, since it is located within their capture zones. Using a more general (weaker radial WKB approximation) formulation of the gov
Externí odkaz:
http://arxiv.org/abs/0711.4848
Publikováno v:
Geophys.Astrophys.FluidDynamics.102:75-115,2008
This paper studies the hydrodynamical problem of normal modes of small adiabatic oscillations of relativistic barotropic thin accretion disks around black holes (and compact weakly magnetic neutron stars). Employing WKB techniques, we obtain the eige
Externí odkaz:
http://arxiv.org/abs/astro-ph/0611101
Publikováno v:
Astrophys.J.567:1043-1056,2002
We extend our investigation of the normal modes of small adiabatic oscillations of relativistic barotropic thin accretion disks to the inertial-pressure (p) modes. We focus here on the lowest frequency fundamental p-modes, those with no axial or vert
Externí odkaz:
http://arxiv.org/abs/astro-ph/0611010
Autor:
Silbergleit, A. S.
We consider Friedmann cosmologies with minimally coupled scalar field. Exact solutions are found, many of them elementary, for which the scalar field energy density, rho_f, and pressure, p_f, obey the equation of state (EOS) p_f=w_f\rho_f. For any co
Externí odkaz:
http://arxiv.org/abs/astro-ph/0208481