𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The nature of the sunspot phenomenon

✍ Scribed by E. N. Parker


Book ID
104649940
Publisher
Springer
Year
1975
Tongue
English
Weight
679 KB
Volume
40
Category
Article
ISSN
0038-0938

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πŸ“œ SIMILAR VOLUMES


The nature of the sunspot phenomenon
✍ E. N. Parker πŸ“‚ Article πŸ“… 1975 πŸ› Springer 🌐 English βš– 563 KB

It is pointed out that the equilibrium configuration of a sunspot magnetic field, confined to the cool umbra by the pressure of the surrounding photospheric gas, is unstable to the familiar hydromagnetic exchange instability. The characteristic time for dissolution of the sunspot is of the order of

The nature of the sunspot phenomenon
✍ E. N. Parker πŸ“‚ Article πŸ“… 1974 πŸ› Springer 🌐 English βš– 781 KB

The properties of Alfv6n waves in a vertical column of field are pointed out as a guide in treating the complicated problem of overstability. There are internal Alfv6n waves of arbitrary form propagating along the magnetic field, without disturbing the fluid outside the column. There are also surfac