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Solar flares and coronal shock waves


Vršnak, Bojan
Solar flares and coronal shock waves // Journal of Geophysical Research, 106 (2001), 25291-25300 (međunarodna recenzija, članak, znanstveni)


Naslov
Solar flares and coronal shock waves

Autori
Vršnak, Bojan

Izvornik
Journal of Geophysical Research 106 (2001); 25291-25300

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

Sažetak
The ignition of coronal shock waves by solar flares is investigated confronting the results of a simple MHD model with the observations. Characteristics of type II bursts recorded in the metric and decametric wavelength range are compared with the properties of the microwave and soft X-ray bursts of the associated flares. The time delay of the type II burst beginning after the onset of a flare is found to be shorter for shorter rise time of a flare burst and for a more powerful flare. Starting frequencies of type II bursts are higher for more impulsive flares. Instantaneous relative bandwidths of the type II bursts are larger for more powerful flares, indicating a higher Mach number of the shock. Consistent with this, a positive correlation between the flare importance and the inferred shock velocity is found. The results are fully consistent with the implications of the model describing the shock formation by a flare-ignited blast wave.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
007004

Ustanove
Geodetski fakultet, Zagreb

Profili:

Avatar Url Bojan Vršnak (autor)

Citiraj ovu publikaciju

Vršnak, Bojan
Solar flares and coronal shock waves // Journal of Geophysical Research, 106 (2001), 25291-25300 (međunarodna recenzija, članak, znanstveni)
Vršnak, B. (2001) Solar flares and coronal shock waves. Journal of Geophysical Research, 106, 25291-25300.
@article{article, author = {Vr\v{s}nak, B.}, year = {2001}, pages = {25291-25300}, keywords = {}, journal = {Journal of Geophysical Research}, volume = {106}, title = {Solar flares and coronal shock waves}, keyword = {} }

Časopis indeksira:


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