ROLE OF FIELD ALIGNED CURRENTS AND PARALLEL ELECTRIC FIELD ON THE GENERATION OF WHISTLER MODE INSTABILITY IN THE EARTH'S MAGNETOSPHERE

摘要

Dispersion relation for the whistler mode waves in an anisotropic bi-Maxwellian magnetoplasma in presence of field aligned currents and parallel electric field has been reformulated to study their effects on whistler mode waves. The results show that waves grow in amplitude for both parallel electric field and field aligned currents. The effect of electric field is pronounced towards lower frequency spectrum, whereas the effect of field aligned currents is more forwards higher frequency spectrum. This study is significant to express their effects on different types of wave phenomena and their amplification.