Backstreaming ions from oblique earth bow shocks

摘要: One-dimensional, hybrid (particle ions, fluid electrons) numerical simulations of oblique shock structure are used to analyze the mechanism by which solar wind ions can be reflected off earth's bow front and escape upstream. It is shown that no backstreaming produced in simulation over 50-90 degrees theta(nB), angle between interplanetary magnetic field normal. Backstreaming emitted for theta(nB) 45 or less, with characteristics reasonable agreement those observed ion streams. The simulated becomes rather turbulent as decreases from 30 degrees. Analysis trajectories shows all originally specularly reflected. effects such whistler formation heating discussed.