Physics – Plasma Physics
Scientific paper
Jul 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002jgra..107.1111f&link_type=abstract
Journal of Geophysical Research (Space Physics), Volume 107, Issue A7, pp. SIA 6-1, CiteID 1111, DOI 10.1029/2001JA900165
Physics
Plasma Physics
27
Ionosphere: Particle Precipitation, Magnetospheric Physics: Magnetosphere/Ionosphere Interactions, Space Plasma Physics: Magnetic Reconnection, Magnetospheric Physics: Magnetopause, Cusp, And Boundary Layers
Scientific paper
The Imager for Magnetopause to Aurora Global Exploration (IMAGE) Spectrographic Imager (SI12) detects Doppler-shifted Lyman alpha emissions created by charge exchange and de-excitation of precipitating protons in the atmosphere. At high latitudes near local noon, emissions consistent with the location of the cusp foot point have distinct interplanetary magnetic field (IMF) dependence. For northward IMF a spot of emissions is observed poleward of the dayside auroral oval. By tracing the magnetic field lines from this spot using a model magnetosphere it is shown that the cusp foot point maps to a narrow region on the high-latitude magnetopause where antiparallel magnetic reconnection may be occurring. As the IMF turns southward, the spot merges into the auroral oval, producing a broad region of intense emissions centered near local noon. By tracing the magnetic field lines from this broad region using a model magnetosphere it is shown that the cusp foot point maps to a relatively broad region on the dayside magnetopause where component magnetic reconnection may be occurring.
Burch James. L.
Frey Harald U.
Fuselier Stephen A.
Mende Stephen B.
Trattner K. J.
No associations
LandOfFree
Cusp aurora dependence on interplanetary magnetic field Bz 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 Cusp aurora dependence on interplanetary magnetic field Bz, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cusp aurora dependence on interplanetary magnetic field Bz will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-734715