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Pregled bibliografske jedinice broj: 524557

Impulsive Acceleration of Coronal Mass Ejections. I. Statistics and Coronal Mass Ejection Source Region Characteristics


Bein, Bianka; Berkebile-Stoiser, Sigrid; Veronig, Astrid; Temmer, Manuela; Muhr, Nicole; Kienreich, Ines; Utz, Dominik; Vršnak, Bojan
Impulsive Acceleration of Coronal Mass Ejections. I. Statistics and Coronal Mass Ejection Source Region Characteristics // The Astrophysical journal, 738 (2011), 2; 191-204 doi:10.1088/0004-637X/738/2/191 (međunarodna recenzija, članak, znanstveni)


Naslov
Impulsive Acceleration of Coronal Mass Ejections. I. Statistics and Coronal Mass Ejection Source Region Characteristics

Autori
Bein, Bianka ; Berkebile-Stoiser, Sigrid ; Veronig, Astrid ; Temmer, Manuela ; Muhr, Nicole ; Kienreich, Ines ; Utz, Dominik ; Vršnak, Bojan

Izvornik
The Astrophysical journal (0004-637X) 738 (2011), 2; 191-204

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

Ključne riječi
methods: statistical; Sun: coronal mass ejections: CMEs

Sažetak
We use high time cadence images acquired by the STEREO EUVI and COR instruments to study the evolution of coronal mass ejections (CMEs) from their initiation through impulsive acceleration to the propagation phase. For a set of 95 CMEs we derived detailed height, velocity, and acceleration profiles and statistically analyzed characteristic CME parameters: peak acceleration, peak velocity, acceleration duration, initiation height, height at peak velocity, height at peak acceleration, and size of the CME source region. The CME peak accelerations we derived range from 20 to 6800 m s–2 and are inversely correlated with the acceleration duration and the height at peak acceleration. Seventy-four percent of the events reach their peak acceleration at heights below 0.5 R sun. CMEs that originate from compact sources low in the corona are more impulsive and reach higher peak accelerations at smaller heights. These findings can be explained by the Lorentz force, which drives the CME accelerations and decreases with height and CME size.

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

Bein, Bianka; Berkebile-Stoiser, Sigrid; Veronig, Astrid; Temmer, Manuela; Muhr, Nicole; Kienreich, Ines; Utz, Dominik; Vršnak, Bojan
Impulsive Acceleration of Coronal Mass Ejections. I. Statistics and Coronal Mass Ejection Source Region Characteristics // The Astrophysical journal, 738 (2011), 2; 191-204 doi:10.1088/0004-637X/738/2/191 (međunarodna recenzija, članak, znanstveni)
Bein, B., Berkebile-Stoiser, S., Veronig, A., Temmer, M., Muhr, N., Kienreich, I., Utz, D. & Vršnak, B. (2011) Impulsive Acceleration of Coronal Mass Ejections. I. Statistics and Coronal Mass Ejection Source Region Characteristics. The Astrophysical journal, 738 (2), 191-204 doi:10.1088/0004-637X/738/2/191.
@article{article, year = {2011}, pages = {191-204}, DOI = {10.1088/0004-637X/738/2/191}, keywords = {methods: statistical, Sun: coronal mass ejections: CMEs}, journal = {The Astrophysical journal}, doi = {10.1088/0004-637X/738/2/191}, volume = {738}, number = {2}, issn = {0004-637X}, title = {Impulsive Acceleration of Coronal Mass Ejections. I. Statistics and Coronal Mass Ejection Source Region Characteristics}, keyword = {methods: statistical, Sun: coronal mass ejections: CMEs} }

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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