Analytical model for the transit time of an interplanetary magnetic cloud

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F25%3A00605559" target="_blank" >RIV/67985815:_____/25:00605559 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.jastp.2024.106416" target="_blank" >https://doi.org/10.1016/j.jastp.2024.106416</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jastp.2024.106416" target="_blank" >10.1016/j.jastp.2024.106416</a>

Result language
angličtina
Original language name
Analytical model for the transit time of an interplanetary magnetic cloud
Original language description
This paper presents an analytical model for the propagation of a toroidal interplanetary magnetic cloud from the vicinity of the Sun to Earth's orbit. This model is applied to the May 12-15, 1997 event for calculations of cloud's acceleration and velocity using a three forces approximation in driving the magnetic cloud's dynamics: the diamagnetic push away from the stronger magnetic field region near the Sun, a drag force due to the ambient solar wind, and the Sun's gravity pull. From the minimization of the difference between the calculated versus observed transit time of the magnetic cloud, we determine free parameters of our model and identify the solar source on May 12 at 5:03 UT. In situ measurements near Earth's orbit done before May 12 set the values of the ambient interplanetary magnetic field, as well as of the ambient solar wind through which the magnetic cloud traveled. The observed temperature and density inside the magnetic cloud at Earth's orbit determine the corresponding inner values during the magnetic cloud's propagation. The coefficient of the drag force is one of free parameters in the model.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)

Project
<a href="/en/project/GA21-26463S" target="_blank" >GA21-26463S: Magnetopause processes, their drivers and consequences</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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