Pregled bibliografske jedinice broj: 423686
Type II bursts in Meter and Decameter-Hectometer Wavelength Ranges and Their Relation to Flares and CMEs
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)
CROSBI ID: 423686 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
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
Projekti:
007-0000000-1362 - Eruptivni procesi u Sunčevoj atmosferi
Ustanove:
Geodetski fakultet, Zagreb
Profili:
Bojan Vršnak
(autor)
Citiraj ovu publikaciju:
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
