Field-Aligned Energetic Electrons During the Storm of July 24, 2004: Cluster RAPID Observations

Details Field-Aligned Energetic Electrons During the Storm of July 24, 2004: Cluster RAPID Observations Field-Aligned Energetic Electrons During the Storm of July 24, 2004: Cluster RAPID Observations

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmsm53b..04r&link_type=abstract

American Geophysical Union, Fall Meeting 2006, abstract #SM53B-04

Physics

2720 Energetic Particles: Trapped, 2744 Magnetotail, 2764 Plasma Sheet, 7845 Particle Acceleration

Scientific paper

Observations by the Cluster constellation of spacecraft in the magnetotail are used to characterize the magnetic field-aligned energetic electrons during the main phase of the geomagnetic storm of July 24, 2004. The storm on this date reached a minimum Dst of -148 nT, and was the third in a sequence of storms during July 2004. Cluster made a pass through the night side of the Earth's magnetosphere during a nine-hour interval (1500-2400 UT) in the early part of the storm main phase. The RAPID Imaging Electron Spectrometer on the Cluster satellites made 3-d measurements of the electrons at energies in the range 52-400 keV during this time. Intense field-aligned distributions of electrons in this energy range were detected intermittently throughout the pass. Several of these episodes had continuous field-aligned electron signatures for as long as 30 minutes, despite large variations in the measured magnetic field direction. Such field-aligned electrons are usually observed for extremely short bursts, like the 50-s event reported by Taylor et al. [2006]. The conventional interpretation is the electrons are accelerated in the reconnection region and stream outward along the magnetic field lines to the observation point. The electrons are detected only momentarily when the spacecraft is on the field line connected to the X-line. The long-duration events observed on July 24th imply that acceleration process associated with the reconnection region expanded to a larger volume, or that an entirely different mechanism is responsible for the field-aligned energetic electrons.

Affiliated with

Also associated with

No associations

Rating

Field-Aligned Energetic Electrons During the Storm of July 24, 2004: Cluster RAPID Observations 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 Field-Aligned Energetic Electrons During the Storm of July 24, 2004: Cluster RAPID Observations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Field-Aligned Energetic Electrons During the Storm of July 24, 2004: Cluster RAPID Observations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1238493