Emergence and evolution of active and ephemeral regions: Comparison between observations and models

• Autorzy: Zuccarello F. , Guglielmino S. , Battiato V. , Contarino L. , Spadaro D. , Romano P.
• Języki publikacji: EN

Abstrakty

EN

This work aims to describe some aspects relevant to the emergence of magnetic structures on the solar surface. Using high resolution photospheric and chromospheric data, besides than EUV images acquired by space telescopes, the dynamics of rising flux tubes is studied. It is shown that, for both long-lived and short-lived magnetic regions, the flux tubes are initially characterized by a high rising velocity, which eventually decreases as the region develops. Other results concern the timeline of the active regions appearance in the atmospheric layers and the asymmetries in plasma downflows between preceding and following legs of the flux tubes. These results are briefly discussed in the light of most recent models.

Słowa kluczowe

EN

solar activity; solar active regions; solar magnetic fields

PL

aktywność słoneczna

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2009
• Tom: Vol. 57, no. 1
• Strony: 15--23
• Opis fizyczny: Bibliogr. 16 poz.

Twórcy

autor

Zuccarello F.

autor

Guglielmino S.

autor

Battiato V.

autor

Contarino L.

autor

Spadaro D.

autor

Romano P.

• Dipartimento di Fisica e Astronomia, Universitá di Catania, Catania, Italy,

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