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SH 51A-02 Evolution of the coronal magnetic
structures traced by X-ray and radio emitting
electrons during the large flare of 3 November
2003 N.Vilmer, C. Dauphin (LESIA-Observatoire de
Paris, France) S. Krucker (Space Sciences
Laboratory, University of California, Berkeley)
12 X-class flares produced in
October-November 2003. Two flares were
simultaneously observed at X-ray and radio
imaging-spectroscopy by RHESSI and the Nançay
Radioheliograph the X17 flare of October 28
produced inAR0486 and the X4 flare of November 3
produced inAR0488 X-ray and radio
observations of the 2003 November 3 flare at ?
0950 UT From top to bottom -Time
evolution of the GOES X-ray flux and of the
100-150 keV X-ray observed by RHESSI. -X-ray
-Radio spectrum between 2 GHz and 1 MHz (ETH
Zürich, AIP Potsdam and WIND/WAVES).
spectrogram showing the time evolution of the
energy of the X-ray photons. The November 3
event was observed up to a few hundreds keV by
RHESSI. At decimetric/metric wavelengths
impulsive bursts are associated with the first
X-ray peak from 0951.2 a type II burst (H)
is observed starting at high frequency (600 MHz)
from 0949.5 to gt 1020 type IV emission is
observed from 2 GHz to 100 MHz. Drifting
structures are seen around 1 GHz from 950 to 1000
UT. Note the strong enhancement of the radio
continuum at all frequencies at 0957 UT together
with the second increase of the X-ray flux above
100 keV. The Nançay Radioheliograph (NRH)
provides images of the radio emissions produced
in the flare between 150 and 450 MHz. In
the interplanetary medium, the event is
associated with a complex type III burst around
0952 UT , a type II burst starting from 1000
UT at 6 MHz and a strong type IV burst
with drifting structures observed from 1015 UT
to 1115 UT in the 14 MHz-6 MHz band.
(http//lep694.gsfc.nasa.gov/waves/waves.html)
The flare is also associated with a fast CME
first seen in the field of view of C2 at 1006 UT
(PA 294, width 104) . From linear or second
order fits, the CME speed is 1384 km/s at
PA332 corresponding to an onset time of
095656 UT(http//cdaw.gsfc.nasa.gov/CME_list/in
dex.html). This corresponds to the time of
the strong enhancement of the radio continuum and
to the new increase of the X-ray flux above 100
keV.
Radio and Hard X-Ray observations of the 2003
November 3 GOES X4 flare
Evolution of the HXR and decimetric/metric radio
sources between 095000 and 100000 UT
Time evolution of the X-ray emission observed by
RHESSI in 4 energy bands. Total radio fluxes at
164 , 236.6, 327and 432 MHz observed by the NRH
Radio and Hard X-Ray observations in association
with the CME
Above left Position of the maximum of the RHESSI
isocontours as a function of time during the
flare overlaid on the EIT image at 094622.
Left 20-25 keV contours. Black spot position
in the first peaks at 094925.130 and
094945.400 Dark brown Movement to
the west from 095005.670 tp 095126.751 at
70 km/s Light brown Movement to the
north from 095147020 to 100054.310 at 15
km/s The change of direction of the
movement is close to the onset time of the metric
type II burst, is there a link between the type
II onset and the propagation of the X-ray
source? Right 60-150 keV contours. Light brown
positions in the first peaks at 094925.130 and
094945.400 Dark brown Movement to
the west from 09 50 05.670 to 095126.750
White positions at 095147.020 to
095308.100 and from
095711.340 to 100054.310 (more distant
footpoints more extended X-ray source at
20-25 keV.) apparent velocity (6.5 km/s)

EIT (195 A ) difference image between 1010 and
0958 UT with radio contours at 432 MHz (thick
contours) and 236MHz (dashed contours) at two
times 0958 UT extended source at 236 MHz
above the limb and 432 MHz above the limb
(strong continuum) 1010 UT sources closer to
the flare site (end of the strong continuum)
The RHESSI image at 20-25 keV lies in the middle
of the EIT flare site
Radio contours (white) at 432 MHz (thick), 236
MHz (thin) 164 MHz (dotted) observed at 095850
UT(strong continuum) and LASCO C2 difference
images 100605 095405 UT (first C2 image
with the CME (top)) 103202-100605 UT
(bottom) As observed in other events, the spatial
extent of the radio sources map the CME extent
NRH contours at 432, 327, 236 and 164 MHz with
RHESSI contours at 20-25 keV and 60-150
keV during the second impulsive peak at
094945.400 UT (impulsive narrow band
bursts) during the type II burst (the RHESSI
contours are plotted at 095147, i.e. when the
motion of the 20-25 keV source changes of
direction) at 0957 continnum enhancement and
1001 UT