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Type II bursts in Meter and Decameter-Hectometer Wavelength Ranges and Their Relation to Flares and CMEs


Prakash, O.; Umapathy, S.; Shanmugaraju, A.; Vršnak, Bojan
Type II bursts in Meter and Decameter-Hectometer Wavelength Ranges and Their Relation to Flares and CMEs // Solar Physics, 258 (2009), 1; 105-118 doi:10.1007/s11207-009-9396-8 (međunarodna recenzija, članak, znanstveni)


Naslov
Type II bursts in Meter and Decameter-Hectometer Wavelength Ranges and Their Relation to Flares and CMEs

Autori
Prakash, O. ; Umapathy, S. ; Shanmugaraju, A. ; Vršnak, Bojan

Izvornik
Solar Physics (0038-0938) 258 (2009), 1; 105-118

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

Ključne riječi
Coronal mass ejections; Solar flares; Type II radio bursts

Sažetak
Statistical analysis of the relationship between type II radio bursts appearing in the metric (m) and decameter-to-hectometer (DH) wavelength ranges is presented. The associated X-ray flares and coronal mass ejections (CMEs) are also reported. The sample is divided into two classes using the frequency-drift plots: Class I, representing those events where DH-type-II bursts are not continuation of m-type-II bursts and Class II, where the DH-type-II bursts are extensions of m-type-II bursts. Our study consists of three steps: i) comparison of characteristics of the Class I and II events ; ii) correlation of m-type-II and DH-type-II burst characteristics with X-ray flare properties and iii) correlation of m-type-II and DH-type-II burst characteristics with CME properties. We have found no clear correlation between properties of m-type-II bursts and DH-type-II bursts. For example, there is no correlation between drift rates of m-type-II bursts and DH-type-II bursts. Similarly there is no correlation between their starting frequencies. In Class I events we found correlations between X-ray flare characteristics and properties of m-type-II bursts and there is no correlation between flare parameters and DH-type-II bursts. On the other hand, the correlation between CME parameters and m-type-II bursts is very weak, but it is good for CME parameters and DH-type-II bursts. These results indicate that Class I m-type-II bursts are related to the energy releases in flares, whereas DH-type-II bursts tend to be related to CMEs. On the contrary, for Class II events in the case of m-type-II and DH-type-II bursts we have found no clear correlation between both flare and CMEs.

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

Prakash, O.; Umapathy, S.; Shanmugaraju, A.; Vršnak, Bojan
Type II bursts in Meter and Decameter-Hectometer Wavelength Ranges and Their Relation to Flares and CMEs // Solar Physics, 258 (2009), 1; 105-118 doi:10.1007/s11207-009-9396-8 (međunarodna recenzija, članak, znanstveni)
Prakash, O., Umapathy, S., Shanmugaraju, A. & Vršnak, B. (2009) Type II bursts in Meter and Decameter-Hectometer Wavelength Ranges and Their Relation to Flares and CMEs. Solar Physics, 258 (1), 105-118 doi:10.1007/s11207-009-9396-8.
@article{article, year = {2009}, pages = {105-118}, DOI = {10.1007/s11207-009-9396-8}, keywords = {Coronal mass ejections, Solar flares, Type II radio bursts}, journal = {Solar Physics}, doi = {10.1007/s11207-009-9396-8}, volume = {258}, number = {1}, issn = {0038-0938}, title = {Type II bursts in Meter and Decameter-Hectometer Wavelength Ranges and Their Relation to Flares and CMEs}, keyword = {Coronal mass ejections, Solar flares, Type II radio bursts} }

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


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  • NASA ADS


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