By explicitly taking into account effects of Alfvén waves, I derive from a simple energetics argument a fundamental relation which predicts solar wind (SW) speeds in the vicinity of the earth from physical properties on the sun. Kojima et al. recently found from their observations that a ratio of surface magnetic field strength to an expansion factor of open magnetic flux tubes is a good indica...

The heating of the solar corona and the puzzle of the slender high reaching magnetic loops seen in observations from the Transition Region And Coronal Explorer(TRACE) has been investigated through 3D numerical simulations, and found to be caused by the well observed plasma flows in the photosphere displacing the footpoints of magnetic loops in a nearly potential configuration. It is found that ...

We report one of several homologous non-radial eruptions from NOAA active region (AR) 11158 that are strongly modulated by the local magnetic field as observed with the Solar Dynamic Observatory (SDO). A small bipole emerged in the sunspot complex and subsequently created a quadrupolar flux system. Non-linear force-free field (NLFFF) extrapolation from vector magnetograms reveals its energetic ...

Oscillations and propagating waves are commonly seen in high-resolution observations of filament threads, i.e., the fine-structures of solar filaments/prominences. Since the temperature of prominences is typically of the order of 104 K, the prominence plasma is only partially ionized. In this paper, we study the effect of neutrals on the wave propagation in a filament thread modeled as a partia...

Filaments which form either between or around active regions (ARs) are called intermediate filaments. In spite of various theoretical studies, the origin of the chirality of filaments is still uncovered. We investigated how intermediate filaments are related to their associated ARs, especially from the point of view of magnetic helicity and the orientation of polarity inversion lines (PILs). Th...

We were engaged in research in various areas of robotic movement planning. The movement planning problems investigated were static movement problems (where the obstacles do not move), minimum distance path planning, compliant motion control (which involves planning without complete knowledge of the position of the robot) and related frictional movement problems, motion planning with independent...

Planetary is the study of planets in the solar system which is binded by a magnetic path of the solar energy provided by the sun. Magnetic path is called the orbit. The path that each planet takes around the sun is an oval shape called an ellipse. Based on the distance from the sun , speed of the planets is calculated. The inclination of the north pole of the planet balances the planet in the v...

Electric self-dual vortices arising as BPS states in the strong coupling limit of N=2 supersymmetric Yang-Mills theory, softly broken to N = 1, are reported. 1. About twenty years ago, 't Hooft and Mandelstam 1], 2] proposed a qualitative description of the quark connnement phenomenon based on an analogy with superconductivity. According to this interpretation, the QCD vacuum behaves as a \dual...