Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aspc..415..148s&link_type=abstract
The Second Hinode Science Meeting: Beyond Discovery-Toward Understanding ASP Conference Series, Vol. 415, proceedings of a meeti
Astronomy and Astrophysics
Astronomy
Scientific paper
This article briefly discusses vector magnetic fields of 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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