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Influence of the ambient solar wind flow on the propagation behavior of interplanetary CMEs


Temmer, Manuela; Rollett, Tanja; Möstl, Christian; Veronig, Astrid M.; Vršnak, Bojan; Odstrčil, Dušan
Influence of the ambient solar wind flow on the propagation behavior of interplanetary CMEs // The Astrophysical journal, 743 (2011), 101-112 doi:10.1088/0004-637X/743/2/101 (međunarodna recenzija, članak, znanstveni)


Naslov
Influence of the ambient solar wind flow on the propagation behavior of interplanetary CMEs

Autori
Temmer, Manuela ; Rollett, Tanja ; Möstl, Christian ; Veronig, Astrid M. ; Vršnak, Bojan ; Odstrčil, Dušan

Izvornik
The Astrophysical journal (0004-637X) 743 (2011); 101-112

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

Ključne riječi
solar wind; Sun: activity; Sun: coronal mass ejections (CMEs)

Sažetak
We study three coronal mass ejection (CME)/interplanetary coronal mass ejection (ICME) events (2008 June 1-6, 2009 February 13-18, and 2010 April 3-5) tracked from Sun to 1 AU in remote-sensing observations of Solar Terrestrial Relations Observatory Heliospheric Imagers and in situ plasma and magnetic field measurements. We focus on the ICME propagation in interplanetary (IP) space that is governed by two forces: the propelling Lorentz force and the drag force. We address the question: which heliospheric distance range does the drag become dominant and the CME adjust to the solar wind flow. To this end, we analyze speed differences between ICMEs and the ambient solar wind flow as a function of distance. The evolution of the ambient solar wind flow is derived from ENLIL three-dimensional MHD model runs using different solar wind models, namely, Wang-Sheeley-Arge and MHD-Around-A-Sphere. Comparing the measured CME kinematics with the solar wind models, we find that the CME speed becomes adjusted to the solar wind speed at very different heliospheric distances in the three events under study: from below 30 R ☉, to beyond 1 AU, depending on the CME and ambient solar wind characteristics. ENLIL can be used to derive important information about the overall structure of the background solar wind, providing more reliable results during times of low solar activity than during times of high solar activity. The results from this study enable us to obtain greater insight into the forces acting on CMEs over the IP space distance range, which is an important prerequisite for predicting their 1 AU transit times.

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

Temmer, Manuela; Rollett, Tanja; Möstl, Christian; Veronig, Astrid M.; Vršnak, Bojan; Odstrčil, Dušan
Influence of the ambient solar wind flow on the propagation behavior of interplanetary CMEs // The Astrophysical journal, 743 (2011), 101-112 doi:10.1088/0004-637X/743/2/101 (međunarodna recenzija, članak, znanstveni)
Temmer, M., Rollett, T., Möstl, C., Veronig, A., Vršnak, B. & Odstrčil, D. (2011) Influence of the ambient solar wind flow on the propagation behavior of interplanetary CMEs. The Astrophysical journal, 743, 101-112 doi:10.1088/0004-637X/743/2/101.
@article{article, year = {2011}, pages = {101-112}, DOI = {10.1088/0004-637X/743/2/101}, keywords = {solar wind, Sun: activity, Sun: coronal mass ejections (CMEs)}, journal = {The Astrophysical journal}, doi = {10.1088/0004-637X/743/2/101}, volume = {743}, issn = {0004-637X}, title = {Influence of the ambient solar wind flow on the propagation behavior of interplanetary CMEs}, keyword = {solar wind, Sun: activity, 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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