Coronal hole evolution by sudden large scale changes
| Autor: | J. T. Nolte, Allen S. Krieger, Michel Gerassimenko, C. V. Solodyna |
|---|---|
| Rok vydání: | 1978 |
| Předmět: |
Physics
Astrophysics::High Energy Astrophysical Phenomena Coronal cloud Astronomy Coronal hole Astronomy and Astrophysics Line of force Astrophysics Coronal loop Solar physics Corona Nanoflares Magnetic field General Relativity and Quantum Cosmology Space and Planetary Science Physics::Space Physics Astrophysics::Solar and Stellar Astrophysics |
| Zdroj: | Solar Physics. 56:153-159 |
| ISSN: | 1573-093X 0038-0938 |
| Popis: | We have compared sudden shifts in coronal hole boundaries observed by the S-054 X-ray telescope on Skylab between May and November, 1973, within 1 day of CMP of the holes, at latitudes ≤ 40 °, with the long-term evolution of coronal hole area. We find that large-scale shifts in boundary locations can account for most if not all of the evolution of coronal holes. The temporal and spatial scales of these large-scale changes imply that they are the results of a physical process occurring in the corona. We conclude that coronal holes evolve by magnetic field lines opening when the holes are growing, and by fields closing as the holes shrink. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink