Multiscale simulations of type III solar radio emission via beam-driven Langmuir waves

Details Multiscale simulations of type III solar radio emission via beam-driven Langmuir waves Multiscale simulations of type III solar radio emission via beam-driven Langmuir waves

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsh33b0379l&link_type=abstract

American Geophysical Union, Fall Meeting 2005, abstract #SH33B-0379

Physics

7534 Radio Emissions, 7829 Kinetic Waves And Instabilities, 7857 Stochastic Phenomena (3235, 3265, 4475), 7867 Wave/Particle Interactions (2483, 6984), 7868 Wave/Wave Interactions

Scientific paper

For most type III bursts, it is usual to invoke plasma emission mechanism to generate the observed levels of emission near the plasma frequency and its second harmonic. This mechanism consists of a sequence of steps: (i) the energetic electron beam generates primary Langmuir waves by a beam instability; (ii) the primary Langmuir waves undergo electrostatic decays and generate product Langmuir waves and ion-acoustic waves; (iv) the product ion-acoustic waves stimulate the primary Langmuir waves to produce electromagnetic emission at the fundamental frequency; and (iv) the nearly oppositely-directed Langmuir waves coalesce and generate electromagnetic emission at the second harmonic of the electron plasma frequency. Here we present the first multiscale simulations of type III solar radio emission driven by electron beams, including the dynamics of the beams and generation of Langmuir and ion-acoustic waves, and electromagnetic radiation. The evolution profiles of the emissions in coordinate and phase space are explored for illustrative parameters of type III radio bursts in the corona and at 1 AU. The effects of density inhomogeneities on emission processes are included, and the evolution of the beam-Langmuir wave system to a stochastic growth state is demonstrated.

Affiliated with

Also associated with

No associations

Rating

Multiscale simulations of type III solar radio emission via beam-driven Langmuir waves does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Multiscale simulations of type III solar radio emission via beam-driven Langmuir waves, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiscale simulations of type III solar radio emission via beam-driven Langmuir waves will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-758352