PoS - Proceedings of Science
Volume 358 - 36th International Cosmic Ray Conference (ICRC2019) - SH - Solar & Heliospheric
Can we estimate the variation of the z-component of the interplanetary magnetic field from the sun shadow?
Y. Nakamura* and  on beahlf of the Tibet ASgamma Collaboration
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Pre-published on: July 22, 2019
Published on: July 02, 2021
It is known that the prominent southward z-component of the interplanetary magnetic field (IMF) sometimes reconnects with the geomagnetic field and causes major geomagnetic storms. Observing $B_{ z}$ (z-component of the IMF) between the sun and earth is one of the important clues for the space weather, but it is difficult to detect $B_{ z}$ before the arrival of IMF at the earth on the solar wind. Tibet ASγ reported that the sun shadow has the information of the y-component and average IMF strength. In this work, we will report the comparison of the $B_{z}$ and sun shadow observed by Tibet ASγ and discuss the possibility of remote sensing of $B_{z}$ using the sun shadow.
DOI: https://doi.org/10.22323/1.358.1132
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