Publikationsdatum:
2011-08-16
Beschreibung:
We have observed a chromospheric brightening in the H alpha and Ca II K lines with a diameter of about 1 arc second. The time structure of this event, obtained with a relative resolution of 1 second, shows the rise time to be 4 seconds, the lifetime (FWHM) to be 20 seconds, and the decay time to be 5 seconds. This imposes new constraints on flare-point models. These restrictions can be accommodated easily by either an infall-impact flare model or a model invoking the precipitation of high-energy particles from the corona.
Schlagwort(e):
SPACE RADIATION
Materialart:
Astrophysical Journal; 185; Nov. 1
Format:
text
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