84 citations · 164 across the 4 of their papers we have counts for
4 papers
Magnetic helicity transported by flux emergence and shuffling motions in Solar Active Region NOAA 10930
Y. Zhang, R. Kitai, K. Takizawa
We present a new methodology which can determine magnetic helicity transport by the passage of helical magnetic field lines from sub-photosphere and the shuffling motions of foot-p…
Properties of Umbral Dots as Measured from the New Solar Telescope Data and MHD Simulations
A. Kilcik, V. B. Yurchyshyn, M. Rempel +5
We studied bright umbral dots (UDs) detected in a moderate size sunspot and compared their statistical properties to recent MHD models. The study is based on high resolution data r…
Characteristic Dependence of Umbral Dots on their Magnetic Structure
Hiroko Watanabe, Reizaburo Kitai, Kiyoshi Ichimoto
Umbral dots (UDs) were observed in a stable sunspot in NOAA 10944 by the Hinode Solar Optical Telescope on 2007 March 1. The observation program consisted of blue continuum images…
Spectro-Polarimetric Observation of an Emerging Flux Region: Triggering Mechanism of Ellerman Bombs
H. Watanabe, R. Kitai, K. Okamoto +6
High spatial resolution observation of an emerging flux region (EFR) was done using a vector magnetograph and a H-alpha Lyot filtergraph with Domeless Solar Telescope at Hida Obser…