Open AccessEscaping radio emission from pulsars: Possible role of velocity shear
Author(s) -
S. M. Mahajan,
G. Z. Machabeli,
A. D. Rogava
Publication year - 1997
Language(s) - English
Resource type - Reports
DOI - 10.2172/468589
Subject(s) - pulsar , magnetosphere , physics , instability , plasma , shear (geology) , astrophysics , radio wave , plasma instability , electromagnetic radiation , geophysics , computational physics , astronomy , mechanics , geology , optics , nuclear physics , quantum mechanics , petrology
It is demonstrated that the velocity shear, intrinsic to the e{sup +}e{sup {minus}} plasma present in the pulsar magnetosphere, can efficiently convert the nonescaping longitudinal Langmuir waves (produced by some kind of a beam or stream instability) into propagating (escaping) electromagnetic waves. It is suggested that this shear induced transformation may be the basic mechanism needed for the eventual generation of the observed pulsar radio emission