Large-Scale Solar Coronal Structures in Soft X-Rays and Their Relationship to the Magnetic Flux
| Autor: | James R. Lemen, G. L. Slater, E. E. Benevolenskaya, Philip H. Scherrer, Alexander G. Kosovichev |
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| Rok vydání: | 2002 |
| Předmět: |
Physics
Sunspot Solar observatory Astrophysics::High Energy Astrophysical Phenomena Astronomy Astronomy and Astrophysics Astrophysics Coronal loop Corona law.invention Nanoflares Telescope Space and Planetary Science law Observatory Physics::Space Physics Astrophysics::Solar and Stellar Astrophysics Polar Astrophysics::Earth and Planetary Astrophysics |
| Zdroj: | The Astrophysical Journal. 571:L181-L185 |
| ISSN: | 1538-4357 0004-637X |
| Popis: | We have investigated the relationship between magnetic activity and coronal structures using soft X-ray data from the Yohkoh soft X-ray telescope and magnetic field data from the Kitt Peak Solar Observatory for the period of 1991-2001 and EUV data from the Solar and Heliospheric Observatory EUV Imaging Telescope for 1996-2001. The data are reduced to Carrington synoptic maps, which reveal two types of migrating structures of coronal activity at low and high latitudes in the time-latitudinal distribution. The low-latitude coronal structures, migrating equatorward, correspond to photospheric sunspot activity, and the high-latitude structures migrating toward the poles reflect polar activity of the Sun. We present the following new results |
| Databáze: | OpenAIRE |
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