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20 papers · 1 filter
Harmonic Map Analysis of SU(N) Gravitating Skyrmions
Y. Brihaye, B. Hartmann, T. Ioannidou +1
In this paper the SU(N) Einstein-Skyrme system is considered. We express the chiral field (which is not a simple embedding of the SU(2) one) in terms of harmonic maps. In this way,…
The environments of hyperluminous infrared galaxies at 0.44<z<1.55
D. Farrah, J. Geach, M. Fox +5
We present deep wide-field K-band observations of six Hyperluminous Infrared Galaxies (HLIRGs) spanning a redshift range 0.44<z<1.55. The sample resides in a wide variety of enviro…
Large Scale Structure in the ELAIS S1 Survey
E. A. Gonzalez-Solares, S. Oliver, C. Gruppioni +6
We present an analysis of the two-point angular correlation function of the ELAIS S1 survey. The survey covers 4 deg and contains 462 sources detected at 15m to a 5 flux…
Gravitating SU(N) Monopoles from Harmonic maps
Yves Brihaye, Betti Hartmann, Theodora Ioannidou +1
Spherically symmetric solutions of the SU(N) Einstein-Yang-Mills-Higgs system are constructed using the harmonic map ansatz. The problem reduces to solving a set of ordinary differ…
Computing Convex Hulls with a Linear Solver
Florence Benoy, Andy King, Fred Mesnard
A programming tactic involving polyhedra is reported that has been widely applied in the polyhedral analysis of (constraint) logic programs. The method enables the computations of…
A Compact Array imaging survey of southern bright-rimmed clouds
M. A. Thompson, J. S. Urquhart, G. J. White
We have carried out a radio-wavelength imaging survey of 45 bright-rimmed clouds (BRCs), using the Australia Telescope Compact Array to characterise the physical properties in thei…