Multi-Spacecraft Observations of Chorus Dispersion and Source Location

Details Multi-Spacecraft Observations of Chorus Dispersion and Source Location Multi-Spacecraft Observations of Chorus Dispersion and Source Location

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agusmsm43a..04b&link_type=abstract

American Geophysical Union, Spring Meeting 2005, abstract #SM43A-04

Other

2730 Magnetosphere: Inner

Scientific paper

Measurements from the Polar spacecraft have put an upper limit of around 1000 km to the size of the magnetospheric chorus generation region along the magnetic field line in agreement with earlier theoretical estimates. The first multipoint observations from the four Cluster spacecraft reveal that a single chorus wave packet can appear differently between spacecraft. One spacecraft observes a chorus element which is frequency shifted and time delayed relative to another. Since the dispersion relation for chorus waves is known, these differences provide a new opportunity to refine the parallel dimension of these source regions. A cross-correlation analysis is used to identify common chorus events between the Cluster spacecraft and to quantify their timing delays. The timing arrival differences and frequency accessibility are then simulated with a ray-tracing technique. Locations in the magnetosphere where the simulated frequency shift and time delay match the observed frequency shift and time delay for a single chorus event are determined as possible source regions. The ray-tracing technique is shown through the identification of a source region for a few typical chorus examples. By studying several chorus events using these techniques a statistical analysis is used to identify chorus source regions and determine the size of these source regions, thereby providing new insights into this wave mechanism.

Affiliated with

Also associated with

No associations

Rating

Multi-Spacecraft Observations of Chorus Dispersion and Source Location 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 Multi-Spacecraft Observations of Chorus Dispersion and Source Location, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-Spacecraft Observations of Chorus Dispersion and Source Location will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1696398