Source of whistler emissions at the dayside magnetopause

Details Source of whistler emissions at the dayside magnetopause Source of whistler emissions at the dayside magnetopause

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007georl..3409106v&link_type=abstract

Geophysical Research Letters, Volume 34, Issue 9, CiteID L09106

Physics

11

Magnetospheric Physics: Plasma Waves And Instabilities (2471), Magnetospheric Physics: Magnetopause And Boundary Layers, Magnetospheric Physics: Magnetic Reconnection (7526, 7835), Magnetospheric Physics: Energetic Particles: Trapped

Scientific paper

Observations of whistler emissions are common in the magnetosphere near the dayside magnetopause. We show that one of the major source regions for these emissions is magnetic field minima that form along magnetic flux tubes at high latitudes. Using multispacecraft Cluster observations we experimentally confirm for the first time the existence of the magnetic field minima at high latitudes and we show that whistler emissions propagate away from the magnetic field minima. The strongest whistler emissions are observed on the magnetospheric flux tubes that are newly opened due to the magnetic reconnection. These flux tubes still have a density of magnetospheric plasma, but part of the high energy magnetospheric electrons have already been lost from the flux tubes. The partial loss of high energy electrons most probably causes anisotropy in electron distributions at high energies which should be the source of whistler emissions. Whistler emissions on opened flux tubes disappear as soon as the plasma density of flux tubes increases due to the entering of magnetosheath ions. We speculate that whistler emissions can most probably be used to trace the dynamics of the first opened field lines and thus the dynamics of magnetic reconnection sites.

Affiliated with

Also associated with

No associations

Rating

Source of whistler emissions at the dayside magnetopause 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 Source of whistler emissions at the dayside magnetopause, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Source of whistler emissions at the dayside magnetopause will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-768295