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Analyses of magnetic field structures for active region 10720 using a data-driven 3D MHD model


Wu, S. T.; Wang, A. H.; Gary, G. Allen; Kucera, Ales; Rybak, Jan; Liu, Yang; Vršnak, Bojan; Yurchyshyn, Vasyl
Analyses of magnetic field structures for active region 10720 using a data-driven 3D MHD model // Advances in Space Research, 44 (2009), 1; 46-53 doi:10.1016/j.asr.2009.03.020 (međunarodna recenzija, članak, znanstveni)


Naslov
Analyses of magnetic field structures for active region 10720 using a data-driven 3D MHD model

Autori
Wu, S. T. ; Wang, A. H. ; Gary, G. Allen ; Kucera, Ales ; Rybak, Jan ; Liu, Yang ; Vršnak, Bojan ; Yurchyshyn, Vasyl

Izvornik
Advances in Space Research (0273-1177) 44 (2009), 1; 46-53

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Sun - MHD; Photosphere - MHD; Non-potentiality properties - MHD; Sun - Magnetograms

Sažetak
In order to understand solar eruptive events (flares and CMEs) we need to investigate the changes at the solar surface. Thus, we use a data-driven, three-dimensional magnetohydrodynamic (MHD) model to analyze a flare and coronal mass ejection productive active region, AR 10720 on January 15, 2005. The measured magnetic field from Big Bear Solar Observatory (BBSO) digital vector magnetograph (DGVM) was used to model the non-potential coronal magnetic field changes and the evolution of electric current before and after the event occurred. The numerical results include the change of magnetic flux (Φ ), the net electric current (IN), the length of magnetic shear of the main neutral line (Lss), the flux normalized measure of the field twist (α =μ INΦ ) with μ being the magnetic permeability. The current helicity (Hc) injected into the corona and the photospheric surface velocity are also computed. The characteristic parameters of the buildup process before the event and the decay process after the event are investigated and the amount of magnetic energy converted to drive the event is estimated.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
007-0000000-1362 - Eruptivni procesi u Sunčevoj atmosferi (Bojan Vršnak, )

Ustanove
Geodetski fakultet, Zagreb

Profili:

Avatar Url Bojan Vršnak (autor)

Citiraj ovu publikaciju

Wu, S. T.; Wang, A. H.; Gary, G. Allen; Kucera, Ales; Rybak, Jan; Liu, Yang; Vršnak, Bojan; Yurchyshyn, Vasyl
Analyses of magnetic field structures for active region 10720 using a data-driven 3D MHD model // Advances in Space Research, 44 (2009), 1; 46-53 doi:10.1016/j.asr.2009.03.020 (međunarodna recenzija, članak, znanstveni)
Wu, S., Wang, A., Gary, G., Kucera, A., Rybak, J., Liu, Y., Vršnak, B. & Yurchyshyn, V. (2009) Analyses of magnetic field structures for active region 10720 using a data-driven 3D MHD model. Advances in Space Research, 44 (1), 46-53 doi:10.1016/j.asr.2009.03.020.
@article{article, year = {2009}, pages = {46-53}, DOI = {10.1016/j.asr.2009.03.020}, keywords = {Sun - MHD, Photosphere - MHD, Non-potentiality properties - MHD, Sun - Magnetograms}, journal = {Advances in Space Research}, doi = {10.1016/j.asr.2009.03.020}, volume = {44}, number = {1}, issn = {0273-1177}, title = {Analyses of magnetic field structures for active region 10720 using a data-driven 3D MHD model}, keyword = {Sun - MHD, Photosphere - MHD, Non-potentiality properties - MHD, Sun - Magnetograms} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


Uključenost u ostale bibliografske baze podataka:


  • NASA-ADS, Chemical Abstracts, Geo Bib & Index, Geographical Abstracts, Geological Abstracts, INSPEC, ISI Alerting Services, ISTP, MGA, Science Citation Index, Science Citation Index - Expanded, Scopus, Web of Science


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