Compact star models in class I spacetime

Mixed Branes Interaction in Compact Spacetime

We present a general description of two mixed branes interactions. For this we consider two mixed branes with dimensions p1 and p2, in external field Bμν and arbitrary gauge fields A (1) α1 and A (2) α2 on the world volume of them, in spacetime in which some of its directions are compactified on circles with different radii. Some examples are considered to clear these general interactions. Fina...

Mixed-branes at Angle in Compact Spacetime

In this paper we obtain the boundary state of a one dimensional mixed brane which makes angle with X 1-direction, in spacetime in which some of its directions are compactified on tori. Then we use of this boundary state for computing the interaction of two angled m 1-branes. Also we study the massless states contribution on this interaction.

Spacetime encodings. I. A spacetime reconstruction problem

This paper explores features of an idealized mathematical machine (algorithm) that would be capable of reconstructing the gravitational nature (the multipolar structure or spacetime metric) of a compact object, by observing gravitational radiation emitted by a small object that orbits and spirals into it. An outline is given of the mathematical developments that must be carried out in order to ...

I-30: Prediction Models in IVF

Star Formation in Isolated Disk Galaxies. I. Models and Star Formation Characteristics

We model star formation in a wide range of isolated disk galaxies composed of a dark matter halo and a disk of stars and isothermal gas, using a threedimensional smoothed particle hydrodynamics code. Absorbing sink particles are used to directly measure the mass of gravitationally collapsing gas. They reach masses characteristic of stellar clusters. In this paper, we describe our galaxy models ...