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Fe, o, and c charge states associated with quiescent versus active current sheets in the solar wind
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | vonSteiger, R. Suess, S. T. Ko, Y.-K. |
| Copyright Year | 2008 |
| Description | Ulysses MAG data were used to locate the heliospheric current sheet in data from 1991 through 2006. The purpose was to characterize typical charge states for Fe, O, and C in the vicinity of the current sheet and provide insight into the physical sources for these charge states in the corona. A study of He/H around the current sheets has led to a clear distinction between quiescent current sheets at times of low solar activity and active current sheets associated with magnetic clouds (and, presumably, ICMES). It has been shown that high ionization state Fe is produced in the corona in current sheets associated with CMEs through spectroscopic observations of the corona and through in situ detection at Ulysses. Here we show that the ionization state of Fe is typically only enhanced around active current sheets while the ionization states of O and C are commonly enhanced around both quiescent and active current sheets. This is consistent with UV coronal spectroscopy, which has shown that reconnection in current sheets behind CMEs leads to high temperatures not typically seen above quiet streamers. |
| File Size | 1219009 |
| Page Count | 13 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20080031036 |
| Archival Resource Key | ark:/13960/t7mq0122t |
| Language | English |
| Publisher Date | 2008-05-26 |
| Access Restriction | Open |
| Subject Keyword | Solar Physics Heliosphere Ion Charge Solar Corona Oxygen Ulysses Mission Current Sheets Ionization Ultraviolet Spectroscopy Iron Solar Wind Carbon Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
