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90 papers · 1 filter
New insights into the photometric structure of Blue Compact Dwarf Galaxies from a deep Near-Infrared study
K. G. Noeske, P. Papaderos, L. M. Cairos +1
We present deep Near-Infrared (NIR) imaging of Blue Compact Dwarf Galaxies (BCDs), allowing for the first time to derive and systematize the NIR structural properties of their stel…
Intrinsic Inhomogeneities in Manganite Thin Films Investigated with Scanning Tunneling Spectroscopy
T. Becker, C. Streng, Y. Luo +4
Thin films of La0.7Sr0.3MnO3 on MgO show a metal insulator transition and colossal magnetoresistance. The shape of this transition can be explained by intrinsic spatial inhomogenei…
Ground state of the Bethe-lattice spin glass and running time of an exact optimization algorithm
Frauke Liers, Matteo Palassini, Alexander K. Hartmann +1
We study the Ising spin glass on random graphs with fixed connectivity z and with a Gaussian distribution of the couplings, with mean μand unit variance. We compute exact ground st…
Constraint Satisfaction by Survey Propagation
A. Braunstein, M. Mezard, M. Weigt +1
Survey Propagation is an algorithm designed for solving typical instances of random constraint satisfiability problems. It has been successfully tested on random 3-SAT and random $…
Studies on the electromagnetic structure of the nucleon by free and quasi-free Compton scattering at MAMI (Mainz)
Martin Schumacher
Using hydrogen and deuterium targets, Compton scattering by the proton and neutron have been studied at the tagged photon beam of the MAMI (Mainz) accelerator using different exper…
Elemental Abundances in the Broad Emission Line Region of Quasars at Redshifts larger than 4
M. Dietrich, I. Appenzeller, F. Hamann +4
We present observations of 11 high redshift quasars ($3.9 \la z \la 5.0$) observed with low spectral resolution in the restframe ultraviolet using FORS 1 at the VLT UT 1. The emiss…