A Challenging Solar Eruptive Event of 18 November 2003 and the Causes of the 20 November Geomagnetic Superstorm. I. Unusual History of an Eruptive Filament

Grechnev, V. V.; Uralov, A. M.; Slemzin, V. A.; Chertok, I. M.; Filippov, B. P.; Rudenko, G. V.; Temmer, M.
January 2014
Solar Physics;Jan2014, Vol. 289 Issue 1, p289
Academic Journal
This is the first of four companion papers, which comprehensively analyze a complex eruptive event of 18 November 2003 in active region (AR) 10501 and the causes of the largest Solar Cycle 23 geomagnetic storm on 20 November 2003. Analysis of a complete data set, not considered before, reveals a chain of eruptions to which hard X-ray and microwave bursts responded. A filament in AR 10501 was not a passive part of a larger flux rope, as usually considered. The filament erupted and gave origin to a coronal mass ejection (CME). The chain of events was as follows: i) a presumable eruption at 07:29 UT accompanied by a not reported M1.2 class flare probably associated with the onset of a first southeastern CME (CME1), which most likely is not responsible for the superstorm; ii) a confined eruption (without a CME) at 07:41 UT (M3.2 flare) that destabilized the large filament; iii) the filament acceleration around 07:56 UT; iv) the bifurcation of the eruptive filament that transformed into a large “cloud”; v) an M3.9 flare in AR 10501 associated to this transformation. The transformation of the filament could be due to the interaction of the eruptive filament with the magnetic field in the neighborhood of a null point, located at a height of about 100 Mm above the complex formed by ARs 10501, 10503, and their environment. The CORONAS-F/SPIRIT telescope observed the cloud in 304 Å as a large Y-shaped darkening, which moved from the bifurcation region across the solar disk to the limb. The masses and kinematics of the cloud and the filament were similar. Remnants of the filament were not clearly observed in the second southwestern CME (CME2), previously regarded as a source of the 20 November geomagnetic storm. These facts do not support a simple scenario, in which the interplanetary magnetic cloud is considered as a flux rope formed from a structure initially associated with the pre-eruption filament in AR 10501. Observations suggest a possible additional eruption above the bifurcation region close to solar disk center between 08:07 and 08:17 UT, which could be the source of the 20 November superstorm.


Related Articles

  • A Challenging Solar Eruptive Event of 18 November 2003 and the Causes of the 20 November Geomagnetic Superstorm. II. CMEs, Shock Waves, and Drifting Radio Bursts. Grechnev, V. V.; Uralov, A. M.; Chertok, I. M.; Slemzin, V. A.; Filippov, B. P.; Egorov, Y. I.; Fainshtein, V. G.; Afanasyev, A. N.; Prestage, N. P.; Temmer, M. // Solar Physics;Apr2014, Vol. 289 Issue 4, p1279 

    We continue our study (Grechnev et al., 2013 , doi: 10.1007/s11207-013-0316-6 ; Paper I) on the 18 November 2003 geoffective event. To understand possible impact on geospace of coronal transients observed on that day, we investigated their properties from solar near-surface manifestations in...

  • Are There Rings Around the Sun? Rawal, J.; Ramadurai, S. // Earth, Moon & Planets;Jun2012, Vol. 108 Issue 3/4, p95 

    The Theory of Alfven drag (Drell et al. in J Geophys Res 70: 3131-3145 ; Anselmo and Farinella in Icarus, 58, 182-185 ) is applied here to show that the existence of a possible solar ring structure at a radial distance of 0.02 AU (~4R, R = radius of the sun) predicted by earlier authors (Brecher...

  • Space weather. Lerner, Eric J. // Discover;Aug95, Vol. 16 Issue 8, p54 

    Reports that the sun occasionally ejects blobs of electrically charged plasma from its magnetic field which creates a geomagnetic storm when it hits the Earth. Impact of geomagnetic storms on satellites and power grids; Study of space physicists on how to forecast geomagnetic storms; Use of...

  • A New Solar Broadband Radio Spectrometer (SBRS) in China. Qijun Fu; Huirong Ji; Zihai Qin; Zhicai Xu; Zhiguo Xia; Hongao Wu; Yuying Liu; Yihua Yan; Guangu Huang; Zhijun Chen; Zhenyu Jin; Qijun Yao; Congung Cheng; Fuying Xu; Min Wang; Libel Pet; Shanhuai Chen; Guo Yang; Chenming Tan; Suobiao Shi // Solar Physics;Jul2004, Vol. 222 Issue 1, p167 

    A new radio spectrometer, Solar Broadband Radio Spectrometer (SBRS) with characteristics of high time resolution, high-frequency resolution, high sensitivity, and wide frequency coverage in the microwave region is described. Its function is to monitor solar radio bursts in the frequency range of...

  • Spatial Characterization of a Flare Using Radio Observations and Magnetic Field Topology. Cristiani, G.; Martinez, G.; Mandrini, C. H.; Giménez De Castro, C. G.; Da Silva, C. W.; Rovira, M. G.; Kaufmann, P. // Solar Physics;Feb2007, Vol. 240 Issue 2, p271 

    Using magnetograms, EUV and Hα images, Owens Valley Solar Array microwave observations, and 212-GHz flux density derived from the Solar Submillimeter Telescope data, we determine the spatial characteristics of the 1B/M6.9 flare that occurred on November 28, 2001, starting at 16:26 UT in...

  • Regions of Generation and Optical Thicknesses of dm-Zebra Lines. Yasnov, L.; Karlický, M. // Solar Physics;Jul2015, Vol. 290 Issue 7, p2001 

    Using a new model based on the double plasma resonance (DPR), we show that the zebra structure seen in solar radio bursts is generated in the transition region and at the tops of the magnetic arcade. The magnetic field in zebra sources is probably weaker than 150 gauss. According to this model,...

  • Gauribidanur Low-Frequency Solar Spectrograph. Kishore, P.; Kathiravan, C.; Ramesh, R.; Rajalingam, M.; Barve, Indrajit // Solar Physics;Oct2014, Vol. 289 Issue 10, p3995 

    A new radio spectrograph, dedicated to observe the Sun, has been recently commissioned by the Indian Institute of Astrophysics (IIA) at the Gauribidanur Radio Observatory, about 100 km North of Bangalore. The instrument, called the Gauribidanur Low-frequency Solar Spectrograph (GLOSS), operates...

  • LOFAR tied-array imaging and spectroscopy of solar S bursts. Morosan, D. E.; Gallagher, P. T.; Zucca, P.; O'Flannagain, A.; Fallows, R.; Reid, H.; Magdalenić, J.; Mann, G.; Bisi, M. M.; Kerdraon, A.; Konovalenko, A. A.; MacKinnon, A. L.; Rucker, H. O.; Thidé, B.; Vocks, C.; Alexov, A.; Anderson, J.; Asgekar, A.; Avruch, I. M.; Bentum, M. J. // Astronomy & Astrophysics / Astronomie et Astrophysique;Aug2015, Vol. 580, p1 

    Context. The Sun is an active source of radio emission that is often associated with energetic phenomena ranging from nanoflares to coronal mass ejections (CMEs). At low radio frequencies (<100 MHz), numerous millisecond duration radio bursts have been reported, such as radio spikes or solar S...

  • Coronal mass ejections and type II radio bursts in cycles 23 and 24. Bilenko, I. // Geomagnetism & Aeronomy;Dec2015, Vol. 55 Issue 8, p1141 

    The parameters of type II radio bursts (RBII) and related coronal mass ejections (CMEs), with regard to the class of the accompanying flares that occurred from 1997 to 2012, as well as the influence of the global solar magnetic field (GSMF) strength and structure on these phenomena, were...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics