Nobeyama Radioheliograph Event 19980808_0314

EventID : norh19980808_0314
Observer : Y. Hanaoka
Keyword : flare
Start : 1998-08-08 03:14:36
End : 1998-08-08 03:15:51
Peak : 1998-08-08 03:15:30
Maximum Correlation @17GHz (x10^-4) : 3738
Position : N12E70
GOES : M3.0
NOAA Number : 8299

This is a compact flare, and extremely bright in radio frequencies. The peak value of the correlation index at 17 GHz, 0.3738, is a new high. The peak brightness temperature at 17 GHz is 2.8x10^8 K. This is the second highest temperature ever observed with the Nobeyama Radioheliograph (The brightest flare is the 1992 November 2 flare; the peak Tb is more than 10^9 K). Since the images undergo dilution by the beam, actual peak brightness temperature is probably much higher than this value.

Nobeyama Radioheliograph Event 19980808_0314

GOES plot

correlation plot (17GHz/17GHz/34GHz)

17GHz image at 03:15:29 UT (peak)