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173 papers · 1 filter
Two magnetic regimes in doped ZnO corresponding to a dilute magnetic semiconductor and a dilute magnetic insulator
A. J. Behan, A. Mokhtari, H. J. Blythe +5
Films of ZnO doped with magnetic ions, Mn and Co and, in some cases, with Al have been fabricated with a very wide range of carrier densities. Ferromagnetic behaviour is observed i…
Morse Inequalities for Orbifold Cohomology
Richard A. Hepworth
This paper begins the study of Morse theory for orbifolds, or more precisely for differentiable Deligne-Mumford stacks. The main result is an analogue of the Morse inequalities tha…
The effect of binaries on the dynamical mass determination of star clusters
M. B. N. Kouwenhoven, R. de Grijs
The total mass of distant star clusters is often derived from the virial theorem, using line-of-sight velocity dispersion measurements and half-light radii. Although most stars for…
The 2003 Nov 14 occultation by Titan of TYC 1343-1865-1. II. Analysis of light curves
A. Zalucha, A. Fitzsimmons, J. L. Elliot +6
We observed a stellar occultation by Titan on 2003 November 14 from La Palma Observatory using ULTRACAM with three Sloan filters: u', g', and i' (358, 487, and 758 nm, respectively…
Complementarity of Gamma-ray and LHC Searches for Neutralino Dark Matter in the Focus Point Region
E. Moulin, A. Jacholkowska, G. Moultaka +7
We study the complementarity between the indirect detection of dark matter with gamma-rays in H.E.S.S. and the supersymmetry searches with ATLAS at the Large Hadron Collider in the…
On deep Frobenius descent and flat bundles
Holger Brenner, Almar Kaid
Let R be an integral domain of finite type over Z and let f:X --> Spec R be a smooth projective morphism of relative dimension d >= 1. We investigate, for a vector bundle E on the…