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16 papers · 1 filter
Inflation from Extra Dimensions
Janna Levin
A gravity-driven inflation is shown to arise from a simple higher dimensional universe. In vacuum, the shear of contracting dimensions is able to inflate the remaining three…
Accretion Disc Turbulence and the X-Ray Power Spectra of Black Hole High States
Michael A. Nowak, Robert V. Wagoner
The high state of black hole candidates is characterized by a quasi- thermal emission component at keV. In addition, this state tends to have very low variability which…
Simulations of the Microwave Sky and of its ``Observations''
F. R. Bouchet, R. Gispert, N. Aghanim +4
Here follows a preliminary report on the construction of fake millimeter and sub-millimeter skies, as observed by virtual instruments, e.g. the COBRA/SAMBA mission, using theoretic…
A New Technique for Detecting Supersymmetric Dark Matter
Glenn D. Starkman, David N. Spergel
We estimate the event rate for excitation of atomic transition by photino-like dark matter. For excitations of several eV, this event rate can exceed naive cross-section by many or…
Non-Linear Cluster Lens Reconstruction
Nick Kaiser
We develop a method for general non-linear cluster lens reconstruction using the observable distortion of background galaxies. The distortion measures the combination of…
Gravitational instability in the strongly nonlinear regime: A study of various approximations
B. S. Sathyaprakash, V. Sahni, D. Munshi +2
We study the development of gravitational instability in the strongly non-linear regime. For this purpose we use a number of statistical indicators such as filamentary statistics,…