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Pregled bibliografske jedinice broj: 453503

The role of aerodynamic drag in propagation of interplanetary coronal mass ejections


Vršnak, Bojan; Žic, Tomislav; Falkenberg, Thea; Möstl, Christian; Vennerstrom, Susanne; Vrbanec, Dijana
The role of aerodynamic drag in propagation of interplanetary coronal mass ejections // Astronomy and astrophysics, 512 (2010), A43; 1-7 doi:10.1051/0004-6361/200913482 (međunarodna recenzija, članak, znanstveni)


Naslov
The role of aerodynamic drag in propagation of interplanetary coronal mass ejections

Autori
Vršnak, Bojan ; Žic, Tomislav ; Falkenberg, Thea ; Möstl, Christian ; Vennerstrom, Susanne ; Vrbanec, Dijana

Izvornik
Astronomy and astrophysics (0004-6361) 512 (2010), A43; 1-7

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

Ključne riječi
Sun: coronal mass ejections (CMEs) / solar-terrestrial relations / solar wind / magnetohydrodynamics (MHD) / Sun: corona

Sažetak
Context. The propagation of interplanetary coronal mass ejections (ICMEs) and the forecast of their arrival on Earth is one of the central issues of space weather studies. Aims. We investigate to which degree various ICME parameters (mass, size, take-off speed) and the ambient solar-wind parameters (density and velocity) affect the ICME Sun-Earth transit time. Methods. We study solutions of a drag-based equation of motion by systematically varying the input parameters. The analysis is focused on ICME transit times and 1 AU velocities. Results. The model results reveal that wide ICMEs of low masses adjust to the solar-wind speed already close to the sun, so the transit time is determined primarily by the solar-wind speed. The shortest transit times and accordingly the highest 1 AU velocities are related to narrow and massive ICMEs (i.e. high-density eruptions) propagating in high-speed solar wind streams. We apply the model to the Sun-Earth event associated with the CME of 25 July 2004 and compare the results with the outcome of the numerical MHD modeling.

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)

Avatar Url Tomislav Žic (autor)

Citiraj ovu publikaciju

Vršnak, Bojan; Žic, Tomislav; Falkenberg, Thea; Möstl, Christian; Vennerstrom, Susanne; Vrbanec, Dijana
The role of aerodynamic drag in propagation of interplanetary coronal mass ejections // Astronomy and astrophysics, 512 (2010), A43; 1-7 doi:10.1051/0004-6361/200913482 (međunarodna recenzija, članak, znanstveni)
Vršnak, B., Žic, T., Falkenberg, T., Möstl, C., Vennerstrom, S. & Vrbanec, D. (2010) The role of aerodynamic drag in propagation of interplanetary coronal mass ejections. Astronomy and astrophysics, 512 (A43), 1-7 doi:10.1051/0004-6361/200913482.
@article{article, year = {2010}, pages = {1-7}, DOI = {10.1051/0004-6361/200913482}, keywords = {Sun: coronal mass ejections (CMEs) / solar-terrestrial relations / solar wind / magnetohydrodynamics (MHD) / Sun: corona}, journal = {Astronomy and astrophysics}, doi = {10.1051/0004-6361/200913482}, volume = {512}, number = {A43}, issn = {0004-6361}, title = {The role of aerodynamic drag in propagation of interplanetary coronal mass ejections}, keyword = {Sun: coronal mass ejections (CMEs) / solar-terrestrial relations / solar wind / magnetohydrodynamics (MHD) / Sun: corona} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


Uključenost u ostale bibliografske baze podataka:


  • NASA ADS


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