707 indexed results
Spatially resolved profiles of the HeII 6560 A, Halpha and [N II] 6548 & 6584 A nebular emission lines have
Between 2000 June and September an exceptional variability phase occurred in the peculiar F-type hypergiant Rho Cas, when the V-brightness
The nature of the Vela X-ray "jet", recently discovered by Markwardt & Ögelman (1995), is examined. It is suggested that
We review the observational differences between gamma-ray bursts occurring on a single shell (such as in the external shock model)
We present high-resolution radio and X-ray studies of the composite supernova remnant G11.2-0.3. Using archival VLA data, we perform radio
The morphology of Bucky onions is investigated by {\it ab initio} calculations using Yang's new $O(N)$ method. It is found
We study here the structure of singularity forming in gravitational collapse of spherically symmetric inhomogeneous dust. Such a collapse is
Applying the Darmois-Israel thin shell formalism, we construct static and dynamic thin shells around traversable wormholes. Firstly, by applying the
Ring nebulae are often found around massive stars such as Wolf-Rayet stars, OB and Of stars and Luminous Blue Variables
We discuss an ansatz for Skyrme fields in three dimensions which uses rational maps between Riemann spheres, and produces shell-like
The response of vacuum to the presence of external conditions is the subject of this work. We consider a generalization
We have performed high resolution 3D simulations of the Local Bubble (with 1.25 pc finest resolution) in a realistic background
An example is described in which an asymptotically flat static vacuum Weyl space-time experiences a sudden change across a null
The elemental abundances of the mildly hydrogen-deficient R Coronae Borealis (R CrB) star V854 Cen have been estimated. The R
We calculate a component of connection superfields and Lorentz superparameter at second order in anticommuting coordinates in terms of the
WRA 751 is an evolved massive star in our Galaxy closely resembling Luminous Blue Variable stars (LBVs). It is surrounded
The mechanism for excitation of p-modes in rapidly oscillating, peculiar A (roAp, or cool chemically peculiar, CP) stars is unknown.
We performed extensive, multi-wavelength observations of the prototypical symbiotic star Z Andromedae between 2000 and 2003, during a large eruption.
Recent nonthermal X-ray and gamma-ray observations, attributed to electron emission processes, for the first time give an experimental confirmation that
We analyze the distribution of the interstellar matter in the environs of the Wolf-Rayet star LSS3982 (= WR85, WN6+OB?) linked
We present experimental investigations of antibubbles. Such an unusual fluid object is a thin spherical air shell surrounding a liquid
We determine the accuracy of various approximations to the O(alpha) corrections for on-shell W-pair production. While an approximation based on
We write a 3D equation for three fermions by combining the three two-body potentials obtained by the reductions of the
We discuss a method to create two-dimensional traps as well as atomic shell, or bubble, states for a Bose-Einstein condensate