Paraboloid model of Mercury's magnetosphere

High-Quality Shadows with Improved Paraboloid Mapping

This paper introduces a novel approach to rendering of highquality shadows in real-time. The contemporary approach to shadow rendering in real-time is shadow maps algorithm. The standard shadow maps suffer from discretization and aliasing due to the limited resolution of the shadow texture. Moreover, omnidirectional lights need additional treatment to work correctly, e.g. with dual-paraboloid s...

A quantitative model of the magnetosphere with poloidal vector ®elds

A quantitative model of the magnetospheric magnetic ®eld is developed using poloidal vector ®elds. This formalism is applied to the ring current region, the distant ®eld and the return currents. The tail model is similar to the unwarped model of Tsyganenko. Several sets of coecients are obtained for di€erent Kp through a ®t of the NSSDC data base. Experimental DB contours and theoretical distr...

Non-Potential Electric Field Model of Magnetosphere-Ionosphere Coupling

The Einsteinian Prediction of the Precession of Mercurys Perihelion

Puzzle solving in normal science involves a process of accommodation—auxiliary assumptions are changed, and parameter values are adjusted so as to eliminate the known discrepancies with the data. Accommodation is often contrasted with prediction. Predictions happen when one achieves a good fit with novel data without accommodation. So, what exactly is the distinction, and why is it important? T...

Millimeter-wave center of curvature test for a fast paraboloid.

We describe a technique for measuring the surface profile of a radio telescope with a fast paraboloidal primary. The technique uses a sensor, at the center of curvature of the primary, consisting of a millimeter-wave source and an array of receivers to measure the field in the caustic. The sensor is mounted on the telescope enclosure and it moves with the telescope, so the measurements can be u...