Eigenmodes of field line resonance at Mercury

Details Eigenmodes of field line resonance at Mercury Eigenmodes of field line resonance at Mercury

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufm.p21a1207k&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #P21A-1207

Physics

[2756] Magnetospheric Physics / Planetary Magnetospheres, [2772] Magnetospheric Physics / Plasma Waves And Instabilities, [5440] Planetary Sciences: Solid Surface Planets / Magnetic Fields And Magnetism, [6235] Planetary Sciences: Solar System Objects / Mercury

Scientific paper

When an incident compressional wave propagates across an Alfven velocity gradient in multi-fluid plasmas, the compressional wave can couple with the Alfven resonance for lower frequency (below the heavy ion gyrofrequency) and/or the ion-ion hybrid (IIH) resonance for higher frequency (between ion gyrofrequencies). Recently, a wave simulation in electron-hydrogen-sodium plasmas suggested that the field line resonance at Mercury is expected to occur when the IIH and/or Alfven resonance conditions are satisfied [Kim et al., 2008]. However, the relative efficiency of wave energy absorption at these resonances and eigenmodes of the field line resonance have not been studied in the context of Mercury's magnetosphere. To understand the efficiency of wave absorption, we evaluate absorption coefficients at the IIH and Alfven resonances for variable concentrations of sodium, ηNa = NNa / Ne, where Nj is number density for particle species j, and azimuthal wave number, ky. By adopting Mercury’s realistic magnetosphere model, eigenmodes of field line resonance are calculated for variable ηNa in radial and/or field aligned directions. We also discuss applications of our results to MESSENGER observations.

Affiliated with

Also associated with

No associations

Rating

Eigenmodes of field line resonance at Mercury 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 Eigenmodes of field line resonance at Mercury, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Eigenmodes of field line resonance at Mercury will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1768411