Nobeyama Radioheliograph Event 19990812_0258


EventID : 19990812_0258
observer: Y. Hanaoka
Keyword : flare and mass ejection
Start : 1999-08-12 02:57:40
Peak : 1999-08-12 02:58:18
End : 1999-08-12 03:06:50
Position: S16W08
Maximum Correlation @17GHz (x10^-4) :
Maximum Brightness Temperature @17GHz : 1.8x10^5
GOES: C2.4
NOAA Number: 8662


A Flare accompanied by Mass Ejection

Correlation plot at 17 GHz.

Image of the whole sun at 17 GHz (negative). A rectangle shows the field-of-view of the partial images shown below.

17 GHz Images of the flare and the mass ejection (negative).

A compact flare accompanied by a mass ejection. Bright ejecta seen at 17 GHz is denoted by arrows. This mass ejection is also seen in SOHO EIT 195 A images.