Facultatea de Fizică
Universitatea "Al.I.Cuza" Iaşi
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| Titlu: Investigation of solar wind propagation delay times |
| Autori: C. Munteanu 1 , B. Mailyan 2 , S. Haaland 3,4 |
| Afiliere: 1 Dept. of Physics,Al. I. Cuza University, 11 Bv. Carol I, 700506 Iasi , Romania
2 Yerevan State University, 1 Alex Manoogian, Yerevan, Armenia
3 Dept. of Physics, University of Bergen, 5020 Bergen, Norway, 4 MaxPlanck
Institute for Solar Systems,Lindau,Germany |
| Abstract: We have done a statistical study of propagation times of solar wind discontinuities between the Advanced
Composition Explorer (ACE) spacecraft in the solar wind and the Cluster satellites near the Earth’s magnetopause. The
propagation times for almost 200 discontinuities are compared with the predicted times from four different models. The
simplest model assumes a constant convective motion of solar wind disturbances along the SunEarth
line, whereas more
sophisticated models take the orientation of the discontinuity as well as the exact positions of the solar wind monitor and
target into account. The results show that taking the orientation and exact position of the solar wind monitor and target into
account gives a more precise time delay estimation, in most cases. |
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