  Recently, observations from laboratory experiments have revealed amplitude
modulation of whistlers by low-frequency perturbations. We here present
theoretical and simulation studies of amplitude modulated whistler solitary
waves (whistlerons) and their interaction with background low-frequency density
perturbations created by the whistler ponderomotive force. We derive a
nonlinear a nonlinear Schrodinger equation which governs the evolution of
whistlers in the presence of finite-amplitude density perturbations, and a set
of equations for arbitrary large amplitude density perturbations in the
presence of the whistler ponderomotive force. The governing equations studied
analytically in the small amplitude limit, and are solved numerically to show
the existence of large scale density perturbations that are self-consistently
created by localized whistlerons. Our numerical results are in good agreement
with recent experimental results where the the formation of modulated whistlers
and solitary whister waves were formed.
