Solar
Eruptive Event of 4 November 2001 observed with the SPIRIT Telescope on
Board the CORONAS-F Satellite
I. M. Chertok(1),
V. A. Slemzin(2), S. V. Kuzin(2), V. V. Grechnev(3), O. I. Bugaenko(4),
I. A. Zhitnik(2), A. P. Ignatiev(2), A. A. Pertsov(2)
(1) IZMIRAN, Troitsk, Moscow Region, 142190, Russia
(2) P.N.Lebedev Physics Institute of RAS, Moscow,
117924, Russia
(3) ISTP SD RAS, Irkutsk, 664033, Russia
(4) Sternberg Astronomical Institute, Moscow
University, Moscow, 119899, Russia
Based on
the data of the SPIRIT telescope on board the CORONAS-F satellite in three
EUV channels 175, 284, 304 Å, we have analyzed large-scale manifestations
of the post-eruptive so-lar activity followed one of the most considerable
and geoeffective coronal mass ejection (CME) in the 23rd cycle which occurred
on 4 November 2001. In particular, we have shown that the re-configuration
of the magnetic field over the eruptive center was accompanied by a formation
of a multi-component post-eruptive arcade extending over about 0.5 Rs that
was observed in all three SPIRIT channels during many hours. Both compact
and channeled dimmings were observed on each side of this arcade and also
along some extended structures outside the active region, rescpectively.
The emission intensity in those dimmings was suppressed by tens percent.
The observed enhanced emission at the upper part of the posteruptive arcade
can be caused by energy release which took place high in the corona due
to the process of magnetic reconnection during the relaxation stage of
the magnetic field disturbed by a CME to a new equilibrium closed con-figuration.
Another possible reason of this effect is an excess of the emission measure
due to the passage of the line of sight simultaneously along the upper
part and basis of the posteruptive loops observed on the angle. The spatial
coincidence of the main dimmings in the diverse-temperature lines denotes
their origin as a result of the plasma evacuation from transition-region
and coronal structures with open field lines. For some dimmings whose appearance
differs in dif-ferent lines, CME-associated variations of the plasma temperature
are important as well.
16:20
UT, 3B/X1.0, AR 9684 (N06 W18), halo CME,
GLE,
J(>10 MeV)~3000 p.f.u., Dst~-300 nT
Situation
before the event ; GOES
soft X-rays and CME ;
H-alpha
flare, Holloman Observatory
Halo
CME observed with SOHO/LASCO ;
Posteruptive
arcade on the CORONAS-F/SPIRIT movies at
175
Å , 284 Å ,
304
Å
Yohkoh/SXT
movie
Posteruptive
arcade by the CORONAS-F/SPIRIT data at 175, 284, 304 Å and by
the Yohkoh/SXT data ;
Dimmings
on the CORONAS-F/SPIRIT rerotated fixed difference images at at 175, 284,
304 Å ;
Dimmings
on the CORONAS-F/SPIRIT movies at
175
Å , 284 Å ,
304
Å
Comparison
with the Bastille Day Event of July 14, 2000:
Solar
Manifestations ; Posteruptive
arcade with a spine ;
Space
Weather Phenomena ;
PDF file and Figures 1 , 2
, 3 , 4 of the
paper "Solar Eruptive Event of 4 November 2001 observed
with the SPIRIT Telescope on Board the CORONAS-F Satellite", by
I. M. Chertok, V. A. Slemzin, S. V. Kuzin, V. V. Grechnev, O. I.
Bugaenko, I. A. Zhitnik, A. P. Ignatiev, A. A. Pertsov, Astronomicheskii
Zhurnal (in Russian), Vol. 81, No. 5, pp. 447-458, 2004.
PDF file of
the English translation of the the paper: Astronomy Reports, Vol. 48,
No. 5, pp. 407-417, 2004.
See the CORONAS-F/SPIRIT
site
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