Nobeyama Radioheliograph Event 19981020_2246

EventID : norh19981020_2246
Observer : H. Nakajima, K.Hori
Keyword : prominence eruption
Start : 1998-10-20 22:46#
End : 1998-10-20 23:40
Peak : ---
100msec Data Duration : ---
Position : N34 E90
GOES :
NOAA Number :

A large prominence eruption.

17GHz full sun image at 22:46:21UT. (The first image of the day.)
Under the erupting prominence, whose brightness temperature is at most 10^4 K, a faint (3x10^3 K) and small projection can be seen in the image. FOV of the box is 13' x 16.4'.

17GHz partial images in the box.
The projected eruption speed is about 100 km/s at the front.