Nobeyama Radioheliograph Event 19990311_0008

EventID : 19990311_0008
Keyword : Flare
Start : 1999-03-11T00:06:50.000Z
Peak : 1999-03-11T00:08:08.000Z
End : 1999-03-11T00:13:14.000Z
Position: S19W63
X (arcsec) : 825
Y (arcsec) : -265
Maximum Correlation @17GHz (x10^-4) : 737
Maximum Brightness Temperature @17GHz : 9.0e+06
Area_src/Area_beam @17GHz : 2.2
Maximum flux @17GHz (SFU) : 106
Maximum flux @34GHz (SFU) : 59
Number of Impulsive fluctuation : 0
GOES: C8.7
NOAA Number: 8483
Yohkoh HXT (L,M1,M2,H): (0,0,0,0)

(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

(top) NoRH 17/34 GHz correlation plot; Diamonds indicate the data points of event mode (50ms/100ms cadence): (white line) 17 GHz (yellow line) 34 GHz .
(bottom) Temporal derivative of correlation plot. Unit is (s^-1). Dotted line indicate 1 %/sec boundary.

SXT image overlaid with NoRH contours. (green/blue) NoRH 17/34GHz brightness temperatures in logarithmic scale. Field of View is the same as Partial Image above Contour levels are log10(Tb) = 5,6,7,8,...