A magnetic cloud with unusual structure and corresponding bow shock movement observed on May 13, 1995

Alfvén vortex filaments observed in magnetosheath downstream of a quasi-perpendicular bow shock

Simulation of a Perpendicular Bow Shock

Mach number cases, whose laminar structures have been adequately described by magnetosonic Simulations of a high Mach number shock with wavetrains that scale as C/mpe ITidman and Krall, parameters typical of the earth's bow hock have 1971). Computer simulations including both been performed using a hybrid (particle ions, electron and ion scales, have significantly fluid electrons) code. The sim...

Relativistic Electrons Produced by Foreshock Disturbances Observed Upstream of Earth's Bow Shock.

Charged particles can be reflected and accelerated by strong (i.e., high Mach number) astrophysical collisionless shock waves, streaming away to form a foreshock region in communication with the shock. Foreshocks are primarily populated by suprathermal ions that can generate foreshock disturbances-large-scale (i.e., tens to thousands of thermal ion Larmor radii), transient (∼5-10  per day) stru...

Pulsar bow - shock nebulae II . Hydrodynamical Simulation

We present hydrodynamical simulations, using a 2-D two component model (ambient medium and pulsar wind have different specific heat ratios), of bow shocks in a representative regime for pulsar wind driven bow-shock nebulae. We also investigate the behaviour of a passive toroidal magnetic field wound around the pulsar velocity direction. Moreover we estimate the opacity of the bow-shock to penet...

Some Unusual Features of Fine Structure Observed in Hela Cells

HeLa cells from conventional culture media have been studied in thin sections with the electron microscope; in many cases cells were examined in sets of sections cut in series. The fine structure of the cells is described including three unusual features not hitherto reported. It has been found that numerous cells contained rows of parallel smooth surfaced cisternae spaced about 150 mmicro apar...