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Probe of the solar magnetic field using the "cosmic-ray shadow" of the sun

Abstract:

We report on a clear solar-cycle variation of the Sun's shadow in the 10 TeV cosmic-ray flux observed by the Tibet air shower array during a full solar cycle from 1996 to 2009. In order to clarify the physical implications of the observed solar cycle variation, we develop numerical simulations of the Sun's shadow, using the potential field source surface model and the current sheet source surface (CSSS) model for the coronal magnetic field. We find that the intensity deficit in the simulated Sun's shadow is very sensitive to the coronal magnetic field structure, and the observed variation of the Sun's shadow is better reproduced by the CSSS model. This is the first successful attempt to evaluate the coronal magnetic field models by using the Sun's shadow observed in the TeV cosmic-ray flux. © 2013 American Physical Society.

Año de publicación:

2013

Keywords:

    Fuente:

    scopusscopus

    Tipo de documento:

    Article

    Estado:

    Acceso restringido

    Áreas de conocimiento:

    • Ciencia planetaria

    Áreas temáticas:

    • Electricidad y electrónica

    Contribuidores:

    Shibata M.Shibata M.
    Hakamada K.Hakamada K.
    Labaciren Labaciren
    Hotta N.Hotta N.
    Jia H.Y.Jia H.Y.
    Chen T.L.Chen T.L.
    Kasahara K.Kasahara K.
    Sakata M.Sakata M.
    Lu H.Lu H.
    Bi X.J.Bi X.J.
    Onuma H.Onuma H.
    Amenomori M.Amenomori M.
    Danzengluobu Danzengluobu
    Zhaxisangzhu Zhaxisangzhu
    Yuan A.F.Yuan A.F.
    Zhou X.X.Zhou X.X.
    Gou Q.B.Gou Q.B.
    Zhang X.Y.Zhang X.Y.
    Tsuchiya H.Tsuchiya H.
    Liu C.Liu C.
    Ding L.K.Ding L.K.
    Huang J.Huang J.
    Qu X.B.Qu X.B.
    Li H.J.Li H.J.
    Cui S.W.Cui S.W.
    Zhang H.M.Zhang H.M.
    Hibino K.Hibino K.
    Udo S.Udo S.
    Li W.J.Li W.J.
    Xue L.Xue L.
    Nanjo H.Nanjo H.
    Li A.F.Li A.F.
    Mizutani K.Mizutani K.
    Wu H.R.Wu H.R.
    Tan Y.H.Tan Y.H.
    Chen D.Chen D.
    Guo Y.Q.Guo Y.Q.
    Hu H.B.Hu H.B.
    T. K. SakoT. K. Sako
    Kajino F.Kajino F.
    Takita M.Takita M.
    Hu H.B.Hu H.B.
    Torii S.Torii S.
    Zhai L.M.Zhai L.M.
    Shirai T.Shirai T.
    Ohnishi M.Ohnishi M.
    Wang H.Wang H.
    Yamamoto Y.Yamamoto Y.
    Feng C.F.Feng C.F.
    Feng Z.Y.Feng Z.Y.
    Feng Z.Y.Feng Z.Y.
    Nishizawa M.Nishizawa M.
    Yasue S.Yasue S.
    Kato C.Kato C.
    Zhang J.L.Zhang J.L.
    Liu M.Y.Liu M.Y.
    Chen W.Y.Chen W.Y.
    Yang Z.Yang Z.
    Meng X.R.Meng X.R.
    Zhang Y.Zhang Y.
    Qian X.L.Qian X.L.
    Yuda T.Yuda T.
    He H.H.He H.H.
    Zhang Y.I.Zhang Y.I.
    Shiomi A.Shiomi A.
    Zhang Y.Zhang Y.
    Le G.M.Le G.M.
    Tateyama N.Tateyama N.
    Saito T.Y.Saito T.Y.
    Ozawa S.Ozawa S.
    Katayose Y.Katayose Y.
    He Z.T.He Z.T.
    Saito T.Saito T.
    Jiang L.Jiang L.
    Munakata K.Munakata K.
    Sugimoto H.Sugimoto H.
    Ohta I.Ohta I.
    Shao J.Shao J.
    Kawata K.Kawata K.
    Liu J.S.Liu J.S.