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Paper: Hinode Observation of the Vector Magnetic Fields in a Sunspot Light Bridge Accompanied by Chromospheric Plasma Ejections
Volume: 415, The Second Hinode Science Meeting: Beyond Discovery-Toward Understanding
Page: 148
Authors: Shimizu, T.
Abstract: This article briefly discusses vector magnetic fields of a sunspot light bridge (LB) where chromospheric plasma ejections (or it is called surges) occurred intermittently and recurrently for more than 1 day. Obliquely oriented magnetic fields with strong vertical electric current density higher than 100 mA/m2 are clearly observed along the light bridge, suggesting a twisted magnetic flux (current carrying) loop lying along the bridge. The magnetic field structure of the light bridge is modeled to explain observed recurrent ejections in terms of magnetic reconnections at the low atmosphere. Details of our findings will be described in a more complete paper (Shimizu et al. 2009).
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