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First Simultaneous Observation of H-alpha Moreton Wave, EUV Wave, and Filament/Prominence Oscillations
Ayumi Asai, Takako T. Ishii, Hiroaki Isobe +9
We report on the first simultaneous observation of an H-alpha Moreton wave, the corresponding EUV fast coronal waves, and a slow and bright EUV wave (typical EIT wave). Associated…
A Study on Red Asymmetry of H-alpha Flare Ribbons Using Narrowband Filtergram in the 2001 April 10 Solar Flare
Ayumi Asai, Kiyoshi Ichimoto, Reizaburo Kitai +2
We report a detailed examination of the "red asymmetry" of H-alpha emission line seen during the 2001 April 10 solar flare by using a narrowband filtergram. We investigated the tem…
Magnetic Structure of Sunspots
J. M. Borrero, K. Ichimoto
In this review we give an overview about the current state-of-knowledge of the magnetic field in sunspots from an observational point of view. We start by offering a brief descript…
Statistical Study on the Nature of Solar Flux Emergence
Kenichi Otsuji, Reizaburo Kitai, Kiyoshi Ichimoto +1
We studied 101 flux emergence events ranging from small ephemeral regions to large emerging flux regions which were observed with Hinode Solar Optical Telescope filtergram. We inve…
Temporal Relation between Disappearance of Penumbral Fine-Scale Structure and Evershed Flow
M. Kubo, K. Ichimoto, B. W. Lites +1
We investigate the temporal relation between the Evershed flow, dot-like bright features (penumbral grain), the complex magnetic field structure, and dark lanes (dark core) along b…