Nobeyama Radioheliograph Event 19990403_2302

EventID : 19990403_2302
Keyword : Flare
Start : 1999-04-03T23:00:24.000Z
Peak : 1999-04-03T23:02:43.000Z
End : 1999-04-03T23:53:26.000Z
Position: N21E73
X (arcsec) : -864
Y (arcsec) : 388
Maximum Correlation @17GHz (x10^-4) : 324
Maximum Brightness Temperature @17GHz : 4.3e+06
Area_src/Area_beam @17GHz : 1.8
Maximum flux @17GHz (SFU) : 58
Maximum flux @34GHz (SFU) : 51
Number of Impulsive fluctuation : 0
GOES: M4.3
NOAA Number:
Yohkoh HXT (L,M1,M2,H): (0,0,0,0)

(top panel) GOES plot.
(middle panel) NoRH 17/34 GHz correlation plot; (white line) 17 GHz (yellow line) 34 GHz .
(bottom panel) Yohkoh/HXT light curves; (white line) L-band, (red line) M1-band, (orange line) M2-band

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,...