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Case study of four homologous large-scale coronal waves observed on 2010 april 28 and 29 (CROSBI ID 168704)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Kienreich, Ines ; Veronig, Astrid ; Muhr, Nicole ; Temmer, Manuela ; Vršnak, Bojan ; Nitta, Nariaki Case study of four homologous large-scale coronal waves observed on 2010 april 28 and 29 // The Astrophysical journal, 727 (2011), L43-L48. doi: 10.1088/2041-8205/727/2/L43

Podaci o odgovornosti

Kienreich, Ines ; Veronig, Astrid ; Muhr, Nicole ; Temmer, Manuela ; Vršnak, Bojan ; Nitta, Nariaki

engleski

Case study of four homologous large-scale coronal waves observed on 2010 april 28 and 29

On 2010 April 28 and 29, the Solar TErrestrial Relations Observatory B/Extreme Ultraviolet Imager observed four homologous large-scale coronal waves, the so-called EIT-waves, within 8 hr. All waves emerged from the same source active region, were accompanied by weak flares and faint coronal mass ejections, and propagated into the same direction at constant velocities in the range of ~220-340 km s–1. The last of these four coronal wave events was the strongest and fastest, with a velocity of 337 ± 31 km s–1 and a peak perturbation amplitude of ~1.24, corresponding to a magnetosonic Mach number of M ms ~ 1.09. The magnetosonic Mach numbers and velocities of the four waves are distinctly correlated, suggestive of the nonlinear fast-mode magnetosonic wave nature of the events. We also found a correlation between the magnetic energy buildup times and the velocity and magnetosonic Mach number.

Sun: corona; Sun: coronal mass ejections (CMEs); Sun: flares

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Podaci o izdanju

727

2011.

L43-L48

objavljeno

0004-637X

10.1088/2041-8205/727/2/L43

Povezanost rada

Fizika

Poveznice
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