Search
Search Results
-
The Accelerating Universe and Dark Energy: Evidence from Type Ia Supernovae
I discuss the use of Type Ia supernovae (SNe Ia) for cosmological distance determinations. Low-redshift SNe Ia (...
-
Black Holes in Two Dimensions
Models of black holes in (1 + 1)-dimensions provide a theoretical laboratory for the study of semi-classical effects of realistic black holes in...
-
Boson Stars in the Centre of Galaxies?
We investigate the possible gravitational redshift values for boson stars with a self-interaction, studying a wide range of possible masses. We find...
-
Accretion and Winds around Galactic and Extragalactic Black Holes
We describe the evolution of models of accretion disks around black holes. We emphasize the importance of centrifugal barrier supported...
-
Black Hole Hair: A Review
The issue of black hole hair (i.e., the feasibility of stationary black hole solutions not completely specified by the conserved charges defined at...
-
Black Holes as Exact Solutions of the Einstein-Maxwell Equations of Petrov Type D
In this review, we derive from a single canonical metric all electrovac solutions with cosmological constant for an algebraically general...
-
Internal Structure of Black Holes
Gravitational collapse to a black hole leaves a decaying wake of gravitational waves. Some of those waves are absorbed into the hole and have...
-
Quantum Information on the Black Hole Horizon
The scattering matrix approach to the black hole quantization problem is introduced and further elaborated. There appears to be a general concensus...
-
Evidence for Massive Black Holes in the Nuclei of Active Galaxies from Gamma-Ray Observations
According to our present knowledge, Active Galactic Nuclei (AGNs) consist of massive black holes which accrete matter from their environments. By...
-
On the Construction of Time-Symmetric Black Hole Initial Data
We review the 3+1 - split which serves to put Einstein's equations into the form of a dynamical system with constraints. We then discuss the...
-
Infering Annihilation Channels of Neutralinos in Galactic Halos
Applying the microcanonical definition of entropy to a weakly interacting and self–gravitating neutralino gas, we evaluate the change in the local...
-
Electroweak Baryogenesis and Primordial Hypermagnetic Fields
The origin of the matter-antimatter asymmetry of the universe remains one of the outstanding questions yet to be answered by modern cosmology, and...
-
Laboratory Limits on Neutrino Masses
The recent neutrino oscillation experiments have obtained nonzero differences of squared neutrino masses and therefore proven that neutrinos are...
-
Experimental Results on Neutrino Oscillations
Neutrino physics, in particular the question of neutrino mass and oscillations, is currently giving rise to a minirevolution in particle physics....
-
Astrophysical and Cosmological Constraints on Neutrino Masses
We review some astrophysical and cosmological properties and implications of neutrino masses and mixing angles. These include constraints based on...
-
Planet Formation
Motivating the study of planet formation is not difficult for any curious audience. One of the fundamental human questions is that of origins: “where...
-
Orbit Dynamics, Stability and Chaos in Planetary Systems
Let us start with a problem of dynamical biology, which was posed about 800 years ago by Fibonacci1
-
Velocity Dispersion Analysis of CNOC Clusters
I present results of the analysis of the internal velocity dispersions,...
-
Magellanic Cloud Eclipsing Binaries: Distances and Dimensions
In this contribution we analyse previously unpublished radial velocity curves in conjunction with other already published light curves, Strömgren...
-
The Galactic Bulge: Prospects for the VLT
The central bulge of the Galaxy is 100 times closer than the nearest extragalactic bulge, that of M31. Until the era of 100m telescopes arrives, the...