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Study of the source regions of coronal mass ejections using yohkoh sxt data
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Kahler, Stephen W. Webb, David F. |
| Copyright Year | 1997 |
| Description | The scientific objective of the program was to better understand how CMEs (Coronal Mass Ejections) are initiated at the sun by examining structures on the disk which are related to the origins of CMEs. CMEs represent important disruptions of large-scale structures of closed magnetic fields in the corona, and result in significant disturbances of the interplanetary medium and near-Earth space. The program pertained to NASA's objectives of understanding the physics of solar activity and the structured and evolution of the corona, and the results are being applied to understanding CMEs currently being observed by SOHO near the sun and by WIND and Ulysses in the heliosphere. Three general areas of research were pursued in the program. One was to use Yohkoh soft X-ray telescope (SXT) images of eruptive events visible against the solar disk to examine the coronal structures and the boundaries of the large-scale magnetic fields considered to be involved in coronal mass ejections (CMEs). The second area involved a survey and study of SXT X-ray arcade events which exhibit dimming, or the possible depletion of coronal material above and possibly before onset of the bright long-duration event (LDE). Finally, we studied the SXT data during periods when white light CMEs were observed the HAO Mauna Loa K-coronameter and, conversely, we examined the white light data during periods when expanding X-ray loops were observed at the limb. |
| File Size | 3535804 |
| Page Count | 49 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19970028023 |
| Archival Resource Key | ark:/13960/t4nk89463 |
| Language | English |
| Publisher Date | 1997-07-30 |
| Access Restriction | Open |
| Subject Keyword | Solar Physics Solar Activity Interplanetary Medium Japanese Spacecraft Solar Corona X Rays Solar Flares Coronal Mass Ejection Solar Limb Dimming Solar Magnetic Field X Ray Telescopes Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
