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7 papers · 1 filter
A not so simple local multiplier algebra
Pere Ara, Martin Mathieu
We construct an AF-algebra such that its local multiplier algebra does not agree with , thus answering a question raised…
Results from the Wide Angle Search for Planets Prototype (WASP0) II: Stellar Variability in the Pegasus Field
Stephen R. Kane, T. A. Lister, Andrew Collier Cameron +5
Recent wide-field photometric surveys which target a specific field for long durations are ideal for studying both long and short period stellar variability. Here we report on 75 v…
Plasma Diagnostics of Active Region Evolution and Implications for Coronal Heating
R. O. Milligan, P. T. Gallagher, M. Mathioudakis +2
A detailed study is presented of the decaying solar active region NOAA 10103 observed with the Coronal Diagnostic Spectrometer (CDS), the Michelson Doppler Imager (MDI) and the Ext…
A Survey of Eclipsing Binary Stars in the Eastern Spiral Arm of M31
Ian Todd, Don Pollacco, Ian Skillen +3
Results of an archival survey are presented using B-band imaging of the eastern spiral arm of M31. Focusing on the eclipsing binary star population, a matched-filter technique has…
Entanglement between Collective Operators in a Linear Harmonic Chain
Johannes Kofler, Vlatko Vedral, Myungshik S. Kim +1
We investigate entanglement between collective operators of two blocks of oscillators in an infinite linear harmonic chain. These operators are defined as averages over local opera…
Current-driven magnetic rearrangements in spin-polarized point contacts
Maria Stamenova, Stefano Sanvito, Tchavdar N. Todorov
A new method for investigating the dynamics of atomic magnetic moments in current-carrying magnetic point contacts under bias is presented. This combines the non-equilibrium Green'…