Nobeyama Radioheliograph Event 19991020_0556

EventID : 19991020_0556
Keyword : flare
Observer : KH, K. Shibasaki
Start : 1999-10-20 05:54:29
Peak : 1999-10-20 05:56:50
End : 1999-10-20 06:44:58
Position: N18W49
Maximum Correlation @17GHz (x10^-4) : 51
Maximum Brightness Temperature @17GHz : 4.2 x 10^5 K
GOES: M1.7 (05:53-06:22-06:43)
NOAA Number: 8731+8732

The start of an M class flare was observed at a complex spot, #8731.

NOTE: This is a target AR of the JOP113 Max Millenium program. See also report from Yohkoh SXT_co.

FOV of the box is 491" x 491".

Time evolution of the maximum Tb.
The solid line shows Max (R+L) and the dotted line shows Max (R-L).
Data points are plotted every 10 min.

Stokes I (R+L) map in the large box. The brightest source moved northward.
The brightness is normalized to the Max Tb in each image. The light blue contours show LCP source.
Mpeg movie (10 min. interval)

A faint Type II burst was observed by HiRAS/CRL, associated with this flare.

For more detailed information

Peak Brightness Temperature at 17 GHz and 34 GHz.
A nonthermal source is present from the beginning until around 0604 UT.
34 GHz emission is dominated by thermal emission.

Stokes I (R+L) partial frame (FOV: 10.5 arc min. sq.) images every one minute at 17 GHz.
The nonthermal source is located in the South. Two thermal sources (arcades) appeared successively toward North.
Mpeg Movie (of high spatial resolution (10 arc sec), every 20 seconds at 17 GHz. FOV is 5.2 arc min. sq. Disk is subtracted. Image zitter will be removed.)