HR: 0830h
AN: SP41A-10    [Abstracts]
TI: Connectivity of Quiet Sun Magnetic Features
AU: * Holt, A W
EM: holt@physics.montana.edu
AF: Montana State University - Bozeman, Department of Physics, Bozeman, MT 59715 United States
AU: Longcope, D W
EM: dana@solar.physics.montana.edu
AF: Montana State University - Bozeman, Department of Physics, Bozeman, MT 59715 United States
AB: We have examined quiet sun photospheric magnetic elements to assess their interelationships as part of a study of the connection between photospheric bipoles and transient coronal brightenings. The spatial relationship of elements in quiet sun have been studied in order to compare observed properties to a hypothetical uniform well-mixed distribution of sources. Quiet sun MDI magnetograms were used to identify photospheric magnetic elements, and the overall distribution of these sources on the sun was tested for uniform density. From the sources we generated distributions of nearest neighbor distances and signs. The distributions were then compared to those expected for a uniform well-mixed distribution. The nearest neighbors of opposite sign then serve as a population of bipoles defined spatially (spatial bipoles). Another set of bipoles was then selected using Magnetic Charge Topology (MCT) to predict connectivity among sources (MCT bipoles). These two sets of bipoles, spatial and MCT, were then compared to cotemporal EIT images to search for evidence of actual connectivity between sources predicted to be bipolar. This work was supported by NASA grant NAG5-10489.
DE: 7524 Magnetic fields
DE: 7529 Photosphere
SC: Solar Physics Division - AAS [SP]
MN: 2005 Joint Assembly