Nobeyama Radioheliograph Event 20020220_0248

EventID : 20020220_0248
Keyword : Flare
Start : 2002-02-20T02:46:44.000
Peak : 2002-02-20T02:48:02.000
End : 2002-02-20T03:16:35.000
Position: N17W71
X (arcsec) : 889
Y (arcsec) : 329
Maximum Correlation @17GHz (x10^-4) : 1321
Maximum Brightness Temperature @17GHz : 3.2e+07
Area_src/Area_beam @17GHz : 3.4
Maximum flux @17GHz (SFU) : 344
Maximum flux @34GHz (SFU) : 322
Number of Impulsive fluctuation : 0
GOES: M4.2
NOAA Number:
RHESSI Energy (keV): 6-12

(top panel) GOES plot.
(bottom panel) NoRH 17/34 GHz correlation plot; (white line) 17 GHz (yellow line) 34 GHz .

Full sun 17GHz image. The flare region is indicated by the solid box.


Partial 17/34GHz images. Color map shows brightness temperature, contour shows 17GHz (r-l)/(r+l) levels, where 'r' and 'l' indicates right- and left-handed circularly-polarized components, respectively. Field of View is 314. x 314. arcsec
Contour levels of the thick lines are (r-l)/(r+l)=-0.1,-0.2,.. and those of the thin lines are (r-l)/(r+l)= +0.1,+0.2,...
Orange circle at top-left indicates the half-max. beam size