S
Shin Nagata
Researcher at Kyoto University
Publications - 39
Citations - 4284
Shin Nagata is an academic researcher from Kyoto University. The author has contributed to research in topics: Telescope & Sunspot. The author has an hindex of 16, co-authored 37 publications receiving 4064 citations. Previous affiliations of Shin Nagata include University of Tokyo.
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Journal ArticleDOI
The Solar Optical Telescope for the Hinode Mission: An Overview
Saku Tsuneta,Kiyoshi Ichimoto,Yukio Katsukawa,Shin Nagata,Masashi Otsubo,Toshifumi Shimizu,Yoshinori Suematsu,Masao Nakagiri,M. Noguchi,T. D. Tarbell,A. M. Title,R. A. Shine,W. Rosenberg,C. Hoffmann,B. Jurcevich,Gary D. Kushner,M. Levay,Bruce W. Lites,D. F. Elmore,Tadashi Matsushita,Noboru Kawaguchi,H. Saito,Izumi Mikami,L. D. Hill,J. K. Owens +24 more
TL;DR: The solar optical telescope (SOT) as discussed by the authors is a 50-cm diffraction-limited Gregorian telescope with the Stokes Spectro-Polarimeter (SP) attached to it.
Journal ArticleDOI
Chromospheric alfvenic waves strong enough to power the solar wind.
B. De Pontieu,Scott W. McIntosh,Scott W. McIntosh,Mats Carlsson,Viggo Hansteen,T. D. Tarbell,Carolus J. Schrijver,A. M. Title,R. A. Shine,Saku Tsuneta,Yukio Katsukawa,Kiyoshi Ichimoto,Yoshinori Suematsu,Toshifumi Shimizu,Shin Nagata +14 more
TL;DR: Estimates of the energy flux carried by these waves and comparisons with advanced radiative magnetohydrodynamic simulations indicate that such Alfvén waves are energetic enough to accelerate the solar wind and possibly to heat the quiet corona.
Journal ArticleDOI
The Horizontal Magnetic Flux of the Quiet-Sun Internetwork as Observed with the Hinode Spectro-Polarimeter
Bruce W. Lites,M. Kubo,M. Kubo,Hector Socas-Navarro,Thomas E. Berger,Z. Frank,R. A. Shine,T. D. Tarbell,A. M. Title,Kiyoshi Ichimoto,Yukio Katsukawa,Saku Tsuneta,Yoshinori Suematsu,Toshifumi Shimizu,Shin Nagata +14 more
TL;DR: In this paper, the authors show that magnetic fields are organized on mesogranular scales, with both horizontal and vertical fields showing voids of reduced flux density of a few granules spatial extent.
Journal ArticleDOI
Image Stabilization System for Hinode (Solar-B) Solar Optical Telescope
Toshifumi Shimizu,Shin Nagata,Saku Tsuneta,T. D. Tarbell,Christopher G. Edwards,R. A. Shine,C. Hoffmann,E. Thomas,S. Sour,R. Rehse,Osamu Ito,Yasuhiro Kashiwagi,Masaki Tabata,Kazuhide Kodeki,M. Nagase,K. Matsuzaki,K. Kobayashi,Kiyoshi Ichimoto,Yoshinori Suematsu +18 more
TL;DR: The Hinode Solar Optical Telescope (SOT) is the first space-borne visible-light telescope that enables us to observe magnetic field dynamics in the solar lower atmosphere with 0.2 -0.3 arcsec spatial resolution under extremely stable (seeing-free) conditions.
Journal ArticleDOI
Small-scale jetlike features in penumbral chromospheres.
Yukio Katsukawa,Thomas E. Berger,Kiyoshi Ichimoto,Bruce W. Lites,Shin Nagata,Toshifumi Shimizu,R. A. Shine,Yoshinori Suematsu,T. D. Tarbell,A. M. Title,Saku Tsuneta +10 more
TL;DR: Fine-scale jetlike features, referred to as penumbral microjets, are observed in chromospheres of sunspot penumbrae in image sequences of a sunspot taken through a Ca II H-line filter on the Japanese solar physics satellite Hinode.