Search Results - "Kawate, Tomoko"

Validation of computed extreme ultraviolet emission spectra during solar flares by Nishimoto, Shohei, Watanabe, Kyoko, Kawai, Toshiki, Imada, Shinsuke, Kawate, Tomoko

“…X-rays and extreme ultraviolet (EUV) emissions from solar flares rapidly change the physical composition of the Earth’s thermosphere and ionosphere, thereby…”
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Study of Time Evolution of Thermal and Nonthermal Emission from an M-class Solar Flare by Nagasawa, Shunsaku, Kawate, Tomoko, Narukage, Noriyuki, Takahashi, Tadayuki, Caspi, Amir, Woods, Thomas N.

“…Abstract We conduct a wide-band X-ray spectral analysis in the energy range of 1.5–100 keV to study the time evolution of the M7.6-class flare of 2016 July 23,…”
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Statistical and Observational Research on Solar Flare EUV Spectra and Geometrical Features by Nishimoto, Shohei, Watanabe, Kyoko, Imada, Shinsuke, Kawate, Tomoko, Lee, Kyoung-Sun

“…Abstract We performed statistical analysis on the flare emission data to examine parameters related to the flare extreme-ultraviolet (EUV) spectra. This study…”
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Nowcast of an EUV dynamic spectrum during solar flares by Kawai, Toshiki, Imada, Shinsuke, Nishimoto, Shohei, Watanabe, Kyoko, Kawate, Tomoko

“…In addition to X-rays, extreme ultraviolet (EUV) rays radiated from solar flares can cause serious problems, such as communication failures and satellite drag…”
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Blue-wing enhancement of the chromospheric Mg  ii  h and k lines in a solar flare by Tei, Akiko, Sakaue, Takahito, Okamoto, Takenori J, Kawate, Tomoko, Heinzel, Petr, UeNo, Satoru, Asai, Ayumi, Ichimoto, Kiyoshi, Shibata, Kazunari

“…Abstract We performed coordinated observations of AR 12205, which showed a C-class flare on 2014 November 11, with the Interface Region Imaging Spectrograph…”
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Observation of tungsten emission spectra up to W46+ ions in the Large Helical Device and contribution to the study of high-Z impurity transport in fusion plasmas by Oishi, Tetsutarou, Morita, Shigeru, Kato, Daiji, Murakami, Izumi, Sakaue, Hiroyuki A., Goto, Motoshi, Kawamoto, Yasuko, Kawate, Tomoko, Nishimura, Ryota, Takahashi, Hiroyuki, Tobita, Kenji

“…Spectroscopic studies of emissions released from tungsten ions combined with a pellet injection technique have been conducted in Large Helical Device for…”
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Statistical analysis for EUV dynamic spectra and their impact on the ionosphere during solar flares by Nishimoto, Shohei, Watanabe, Kyoko, Jin, Hidekatsu, Kawai, Toshiki, Imada, Shinsuke, Kawate, Tomoko, Otsuka, Yuichi, Shinbori, Atsuki, Tsugawa, Takuya, Nishioka, Michi

“…The X-rays and extreme ultraviolet (EUV) emitted during solar flares can rapidly change the physical composition of Earth’s ionosphere, causing space weather…”
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Model-based reproduction and validation of the total spectra of a solar flare and their impact on the global environment at the X9.3 event of September 6, 2017 by Watanabe, Kyoko, Jin, Hidekatsu, Nishimoto, Shohei, Imada, Shinsuke, Kawai, Toshiki, Kawate, Tomoko, Otsuka, Yuichi, Shinbori, Atsuki, Tsugawa, Takuya, Nishioka, Michi

“…We attempted to reproduce the total electron content (TEC) variation in the Earth's atmosphere from the temporal variation of the solar flare spectrum of the…”
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Chromospheric Anemone Jets as Evidence of Ubiquitous Reconnection by Shibata, Kazunari, Nakamura, Tahei, Matsumoto, Takuma, Otsuji, Kenichi, Okamoto, Takenori J, Nishizuka, Naoto, Kawate, Tomoko, Watanabe, Hiroko, Nagata, Shin'ichi, UeNo, Satoru, Kitai, Reizaburo, Nozawa, Satoshi, Tsuneta, Saku, Suematsu, Yoshinori, Ichimoto, Kiyoshi, Shimizu, Toshifumi, Katsukawa, Yukio, Tarbell, Theodore D, Berger, Thomas E, Lites, Bruce W, Shine, Richard A, Title, Alan M

“…The heating of the solar chromosphere and corona is a long-standing puzzle in solar physics. Hinode observations show the ubiquitous presence of chromospheric…”
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Better Understanding of Hydrogen Pellet Ablation Cloud Spectra through the Occupation Probability Formalism in LHD by Goto, Motoshi, Motojima, Gen, Sakamoto, Ryuichi, Pégourié, Bernard, Matsuyama, Akinobu, Oishi, Tetsutarou, Kawate, Tomoko, Kawamoto, Yasuko

“…We have recently incorporated the occupation probability formalism (OPF) in the simulation model [C. Stehlé and S. Jacquemot, Astron. Astrophys. 271, 348…”
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EUV/VUV Spectroscopy for the Study of Carbon Impurity Transport in Hydrogen and Deuterium Plasmas in the Edge Stochastic Magnetic Field Layer of Large Helical Device by Oishi, Tetsutarou, Morita, Shigeru, Kobayashi, Masahiro, Kawamura, Gakushi, Kawamoto, Yasuko, Kawate, Tomoko, Masuzaki, Suguru, Suzuki, Chihiro, Goto, Motoshi

“…The ergodic layer in the Large Helical Device (LHD) consists of stochastic magnetic fields exhibiting a three-dimensional structure that is intrinsically…”
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Infrared spectro-polarimeter on the Solar Flare Telescope at NAOJ/Mitaka by Sakurai, Takashi, Hanaoka, Yoichiro, Arai, Takehiko, Hagino, Masaoki, Kawate, Tomoko, Kitagawa, Naomasa, Kobiki, Toshihiko, Miyashita, Masakuni, Morita, Satoshi, Otsuji, Ken’ichi, Shinoda, Kazuya, Suzuki, Isao, Yaji, Kentaro, Yamasaki, Takayuki, Fukuda, Takeo, Noguchi, Motokazu, Takeyama, Norihide, Kanai, Yoshikazu, Yamamuro, Tomoyasu

“…Abstract An infrared spectro-polarimeter installed on the Solar Flare Telescope at the Mitaka headquarters of the National Astronomical Observatory of Japan is…”
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Simultaneous Observation of Tungsten Spectra of W0 to W46+ Ions in Visible, VUV and EUV Wavelength Ranges in the Large Helical Device by Oishi, Tetsutarou, Morita, Shigeru, Kato, Daiji, Murakami, Izumi, Sakaue, Hiroyuki A., Kawamoto, Yasuko, Kawate, Tomoko, Goto, Motoshi

“…Spectroscopic studies for emissions released from tungsten ions have been conducted in the Large Helical Device (LHD) for contribution to the tungsten…”
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NIFS Atomic and Molecular Numerical Database for Collision Processes by Murakami, Izumi, Kato, Masatoshi, Emoto, Masahiko, Kato, Daiji, Sakaue, Hiroyuki A., Kawate, Tomoko

“…The National Institute for Fusion Science (NIFS) has compiled and developed atomic and molecular numerical databases for various collision processes and makes…”
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Evaluation of Fe XIV Intensity Ratio for Electron Density Diagnostics by Laboratory Measurements by Kambara, Nagaaki, Kawate, Tomoko, Oishi, Tetsutarou, Kawamoto, Yasuko, Sakaue, Hiroyuki A., Kato, Daiji, Nakamura, Nobuyuki, Hara, Hirohisa, Murakami, Izumi

“…The intensity ratio of Fe XIV 264.765A/274.203A is useful to determine the electron density of solar corona, and the relationship between the electron density…”
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Center-to-Limb Variation of Radio Emissions from Thermal-Rich and Thermal-Poor Solar Flares by Kawate, Tomoko, Asai, Ayumi, Ichimoto, Kiyoshi

“…A statistical analysis of radio flare events was conducted by using the event list of Nobeyama Radioheliograph in the years 1996–2009. We examined…”
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Internal Fine Structure of Ellerman Bombs by Hashimoto, Yuki, Kitai, Reizaburo, Ichimoto, Kiyoshi, UeNo, Satoru, Nagata, Shin’ichi, Ishii, Takako T., Hagino, Masaoki, Komori, Hiroyuki, Nishida, Keisuke, Matsumoto, Takuma, Otsuji, Kenichi, Nakamura, Tahei, Kawate, Tomoko, Watanabe, Hiroko, Shibata, Kazunari

“…We conducted coordinated observations of Ellerman bombs (EBs) between Hinode Satellite and Hida Observatory (HOP12). Ca II H broad-band filter images of NOAA…”
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Spicule Dynamics over a Plage Region by Anan, Tetsu, Kitai, Reizaburo, Kawate, Tomoko, Matsumoto, Takuma, Ichimoto, Kiyoshi, Shibata, Kazunari, Hillier, Andrew, Otsuji, Kenichi, Watanabe, Hiroko, UeNo, Satoru, Nagata, Shin’ichi, Ishii, Takako T., Komori, Hiroyuki, Nishida, Keisuke, Nakamura, Tahei, Isobe, Hiroaki, Hagino, Masaoki

“…We studied spicular jets over a plage area and derived their dynamic characteristics using Hinode Solar Optical Telescope (SOT) high-resolution images. A…”
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Infrequent Occurrence of Significant Linear Polarization in H Solar Flares by Kawate, Tomoko, Hanaoka, Yoichiro

“…We performed statistical and event studies of linear polarization in the H line during solar flares. The statistical study revealed that, among 71 H flares…”
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High-Speed Imaging System for Solar-Flare Research at Hida Observatory by Ishii, Takako T., Kawate, Tomoko, Nakatani, Yoshikazu, Morita, Satoshi, Ichimoto, Kiyoshi, Masuda, Satoshi

“…A high-speed imaging system for observing solar flares in the continuum and H $ \alpha$ wavelengths was installed on a $ \phi$ 25 cm telescope of the Solar…”
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