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The Wave-Driver System of the Off-Disk Coronal Wave of 17 January 2010


Temmer, Manuela; Vršnak, Bojan; Veronig, Astrid M.
The Wave-Driver System of the Off-Disk Coronal Wave of 17 January 2010 // Solar physics, 287 (2013), 1/2; 441-454 doi:10.1007/s11207-012-0088-4 (međunarodna recenzija, članak, znanstveni)


Naslov
The Wave-Driver System of the Off-Disk Coronal Wave of 17 January 2010

Autori
Temmer, Manuela ; Vršnak, Bojan ; Veronig, Astrid M.

Izvornik
Solar physics (0038-0938) 287 (2013), 1/2; 441-454

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

Ključne riječi
shock waves; coronal mass ejection

Sažetak
We study the 17 January 2010 flare-CME-wave event by using STEREO/SECCHI-EUVI and -COR1 data. The observational study is combined with an analytic model that simulates the evolution of the coronal wave phenomenon associated with the event. From EUV observations, the wave signature appears to be dome shaped having a component propagating on the solar surface (overline{; ; ; v}; ; ; ≈280 km s^{; ; ; -1}; ; ; ) as well as one off-disk (overline{; ; ; v}; ; ; ≈ 600 km s^{; ; ; -1}; ; ; ) away from the Sun. The off-disk dome of the wave consists of two enhancements in intensity, which conjointly develop and can be followed up to white-light coronagraph images. Applying an analytic model, we derive that these intensity variations belong to a wave-driver system with a weakly shocked wave, initially driven by expanding loops, which are indicative of the early evolution phase of the accompanying CME. We obtain the shock standoff distance between wave and driver from observations as well as from model results. The shock standoff distance close to the Sun (< 0.3 R sun above the solar surface) is found to rapidly increase with values of ≈ 0.03 - 0.09 R sun, which gives evidence of an initial lateral (over)expansion of the CME. The kinematical evolution of the on-disk wave could be modeled using input parameters that require a more impulsive driver (duration t=90 s, acceleration a=1.7 km s-2) compared to the off-disk component (duration t=340 s, acceleration a=1.5 km s-2).

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

Temmer, Manuela; Vršnak, Bojan; Veronig, Astrid M.
The Wave-Driver System of the Off-Disk Coronal Wave of 17 January 2010 // Solar physics, 287 (2013), 1/2; 441-454 doi:10.1007/s11207-012-0088-4 (međunarodna recenzija, članak, znanstveni)
Temmer, M., Vršnak, B. & Veronig, A. (2013) The Wave-Driver System of the Off-Disk Coronal Wave of 17 January 2010. Solar physics, 287 (1/2), 441-454 doi:10.1007/s11207-012-0088-4.
@article{article, year = {2013}, pages = {441-454}, DOI = {10.1007/s11207-012-0088-4}, keywords = {shock waves, coronal mass ejection}, journal = {Solar physics}, doi = {10.1007/s11207-012-0088-4}, volume = {287}, number = {1/2}, issn = {0038-0938}, title = {The Wave-Driver System of the Off-Disk Coronal Wave of 17 January 2010}, keyword = {shock waves, coronal mass ejection} }

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


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