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Numerical Simulation of Coronal Waves Interacting with Coronal Holes. III. Dependence on Initial Amplitude of the Incoming Wave


Piantschitsch, Isabell; Vršnak, Bojan; Hanslmeier, Arnold; Lemmerer, Birgit; Veronig, Astrid; Hernandez-Perez, Aaron; Čalogović, Jaša
Numerical Simulation of Coronal Waves Interacting with Coronal Holes. III. Dependence on Initial Amplitude of the Incoming Wave // The Astrophysical journal, 860 (2018), 1; 24, 17 doi:10.3847/1538-4357/aabe7f (međunarodna recenzija, članak, znanstveni)


Naslov
Numerical Simulation of Coronal Waves Interacting with Coronal Holes. III. Dependence on Initial Amplitude of the Incoming Wave

Autori
Piantschitsch, Isabell ; Vršnak, Bojan ; Hanslmeier, Arnold ; Lemmerer, Birgit ; Veronig, Astrid ; Hernandez-Perez, Aaron ; Čalogović, Jaša

Izvornik
The Astrophysical journal (0004-637X) 860 (2018), 1; 24, 17

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

Ključne riječi
magnetohydrodynamics (MHD) ; Sun: corona ; Sun: evolution ; waves

Sažetak
We performed 2.5D magnetohydrodynamic (MHD) simulations showing the propagation of fast-mode MHD waves of different initial amplitudes and their interaction with a coronal hole (CH), using our newly developed numerical code. We find that this interaction results in, first, the formation of reflected, traversing, and transmitted waves (collectively, secondary waves) and, second, in the appearance of stationary features at the CH boundary. Moreover, we observe a density depletion that is moving in the opposite direction of the incoming wave. We find a correlation between the initial amplitude of the incoming wave and the amplitudes of the secondary waves as well as the peak values of the stationary features. Additionally, we compare the phase speed of the secondary waves and the lifetime of the stationary features to observations. Both effects obtained in the simulation, the evolution of secondary waves, as well as the formation of stationary fronts at the CH boundary, strongly support the theory that coronal waves are fast-mode MHD waves.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
HRZZ-IP-2013-11-6212 - Promjenjivost Sunca i zvijezda (Bojan Vršnak, )

Ustanove
Geodetski fakultet, Zagreb

Profili:

Avatar Url Jaša Čalogović (autor)

Avatar Url Bojan Vršnak (autor)

Citiraj ovu publikaciju

Piantschitsch, Isabell; Vršnak, Bojan; Hanslmeier, Arnold; Lemmerer, Birgit; Veronig, Astrid; Hernandez-Perez, Aaron; Čalogović, Jaša
Numerical Simulation of Coronal Waves Interacting with Coronal Holes. III. Dependence on Initial Amplitude of the Incoming Wave // The Astrophysical journal, 860 (2018), 1; 24, 17 doi:10.3847/1538-4357/aabe7f (međunarodna recenzija, članak, znanstveni)
Piantschitsch, I., Vršnak, B., Hanslmeier, A., Lemmerer, B., Veronig, A., Hernandez-Perez, A. & Čalogović, J. (2018) Numerical Simulation of Coronal Waves Interacting with Coronal Holes. III. Dependence on Initial Amplitude of the Incoming Wave. The Astrophysical journal, 860 (1), 24, 17 doi:10.3847/1538-4357/aabe7f.
@article{article, year = {2018}, pages = {17}, DOI = {10.3847/1538-4357/aabe7f}, chapter = {24}, keywords = {magnetohydrodynamics (MHD), Sun: corona, Sun: evolution, waves}, journal = {The Astrophysical journal}, doi = {10.3847/1538-4357/aabe7f}, volume = {860}, number = {1}, issn = {0004-637X}, title = {Numerical Simulation of Coronal Waves Interacting with Coronal Holes. III. Dependence on Initial Amplitude of the Incoming Wave}, keyword = {magnetohydrodynamics (MHD), Sun: corona, Sun: evolution, waves}, chapternumber = {24} }

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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