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Coronal mass ejection of 15 may 2001: II. coupling of the CME acceleration and the flare energy release


Vršnak, Bojan; Maričić, Darije; Stanger, Andrew; Veronig, Astrid
Coronal mass ejection of 15 may 2001: II. coupling of the CME acceleration and the flare energy release // Solar physics, 225 (2004), 355-378 (međunarodna recenzija, članak, znanstveni)


Naslov
Coronal mass ejection of 15 may 2001: II. coupling of the CME acceleration and the flare energy release

Autori
Vršnak, Bojan ; Maričić, Darije ; Stanger, Andrew ; Veronig, Astrid

Izvornik
Solar physics (0038-0938) 225 (2004); 355-378

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

Ključne riječi
Sun: coronal mass ejections; Sun: Flares; MHD

Sažetak
We analyze the relationship between the dynamics of the coronal mass ejection (CME) of 15 May 2001 and the energy release in the associated flare. The flare took place behind the east limb and was disclosed by a growing system of hot soft X-ray (SXR) loops that appeared from behind the limb around the onset of the rapid acceleration of the CME. The highly correlated behavior of the SXR light-curve derivative and the time profile of the CME acceleration reveals an intrinsic relationship between the CME dynamics and the flare energy release. Furthermore, we found that the CME acceleration peak occurs simultaneously with the fastest growth (100~km\, s$^{; ; ; -1}; ; ; $) of X-ray loops, indicating that the reconnection plays an essential role in the eruption. Inspecting the CME/flare morphology we recognized in the Yohkoh-SXT images an oval feature that formed within the rising structure at the onset of the rapid acceleration phase, simultaneously with the appearance of the X-ray loops. The eruptive prominence was imbedded within the lower half of the oval, suggestive of the flux-rope/prominence magnetic configuration. We interpret the observed morphological evolution in terms of the reconnection process in the current sheet that presumably formed below the erupting flux-rope at the onset of the CME acceleration. Measurements of the tip-height of the cusped X-ray loop system and the height of the lower edge of the oval, enable us to trace the stretching of the current sheet. The initial distance between the oval and the loops amounted to 35--40~Mm. In about one hour the inferred length of the current sheet increased to 150--200~Mm, which corresponds to the mean elongation-speed of 35--45~km\, s$^{;-1}; $. The results are discussed in the framework of CME models that include the magnetic reconnection below the erupting flux-rope

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
0007017

Ustanove
Geodetski fakultet, Zagreb

Profili:

Avatar Url Bojan Vršnak (autor)

Citiraj ovu publikaciju

Vršnak, Bojan; Maričić, Darije; Stanger, Andrew; Veronig, Astrid
Coronal mass ejection of 15 may 2001: II. coupling of the CME acceleration and the flare energy release // Solar physics, 225 (2004), 355-378 (međunarodna recenzija, članak, znanstveni)
Vršnak, B., Maričić, D., Stanger, A. & Veronig, A. (2004) Coronal mass ejection of 15 may 2001: II. coupling of the CME acceleration and the flare energy release. Solar physics, 225, 355-378.
@article{article, year = {2004}, pages = {355-378}, keywords = {Sun: coronal mass ejections, Sun: Flares, MHD}, journal = {Solar physics}, volume = {225}, issn = {0038-0938}, title = {Coronal mass ejection of 15 may 2001: II. coupling of the CME acceleration and the flare energy release}, keyword = {Sun: coronal mass ejections, Sun: Flares, MHD} }

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