Coherent Emission from Magnetars

It is proposed that magnetospheric currents above the surfaces of magnetars radiate coherent emission in analogy to pulsars. Scaling the magnetospheric parameters suggests that the coherent emission from magnetars would emerge in the infra-red or optical

The X-ray jet in the Crab Nebula: radical implications for pulsar theory?

The recent Chandra image of the Crab nebula shows a striking, axisymmetric polar jet. It is shown that jets are formed in axisymmetric, magnetized pulsar winds and that the jet luminosity scales relative to the total as (\gamma_0\sigma_{eq})^{-4/3}, where \sigma_{eq} is the ratio of Poynting flux to particle kinetic energy output at the equator at the base of the flow and \gamma_0 the initial Lorentz factor of the flow. The results are applied to the image of the Crab nebula, and the limit is set for the Crab pulsar of \sigma_{eq} \leq 100. It is argued that conventional pulsar theory needs to be reexamined in light of these limits.Comment: 13 page

INTELLECTUAL WORKBENCH FOR OPERATIVE CONTROL IN POWER SYSTEMS

The aim is to provide the automaion of the important functions for operative control in the power systems on base of constructing intellectual workbench. The methodological base for construction of the tooling and applied intellectual systems for use in the electric power engineering has been developed. The tooling intellectual system MIMIR oriented to the power engineering problems has been developed. The applied intellectual systems (natural-language subsystem of dispatcher interaction, system-suggesters on short-time planning of equipment repairs, simulators of operative switchings) have been developed and introduced in the Central Dispatcher Board of RF United Energetical System.Available from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio