Zobrazeno 1 - 10
of 155
pro vyhledávání: '"Munetoshi Tokumaru"'
Autor:
Yasushi Muraki, Tatsumi Koi, Satoshi Masuda, Yutaka Matsubara, Pedro Miranda, Shoko Miyake, Tsuguya Naito, Ernesto Ortiz, Akitoshi Oshima, Takashi Sako, Shoichi Shibata, Hisanori Takamaru, Munetoshi Tokumaru, Jóse F. Valdés-Galicia, Kyoko Watanabe
Publikováno v:
Universe, Vol 10, Iss 1, p 16 (2023)
Solar flares are broadly classified as impulsive or gradual. Ions accelerated in a gradual flare are thought to be accelerated through a shock acceleration mechanism, but the particle acceleration process in an impulsive flare is still largely unexpl
Externí odkaz:
https://doaj.org/article/5c4e51cfc6594fea864b82fa920494d2
Publikováno v:
Earth, Planets and Space, Vol 73, Iss 1, Pp 1-10 (2021)
Abstract Coronal mass ejections (CMEs) cause various disturbances of the space environment; therefore, forecasting their arrival time is very important. However, forecasting accuracy is hindered by limited CME observations in interplanetary space. Th
Externí odkaz:
https://doaj.org/article/a85c1d51ca1248139b4c1f17ba24813b
Publikováno v:
Earth, Planets and Space, Vol 71, Iss 1, Pp 1-11 (2019)
Abstract Coronal mass ejections (CMEs) cause disturbances in the environment of the Earth when they arrive at the Earth. However, the prediction of the arrival of CMEs still remains a challenge. We have developed an interplanetary scintillation (IPS)
Externí odkaz:
https://doaj.org/article/9da18375f9f344f3ac0d798168edc98b
Autor:
Bernard V. Jackson, Andrew Buffington, Lucas Cota, Dusan Odstrcil, Mario M. Bisi, Richard Fallows, Munetoshi Tokumaru
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 7 (2020)
Over several decades, UCSD has developed and continually updated a time-dependent iterative three-dimensional (3-D) reconstruction technique to provide global heliospheric parameters—density, velocity, and component magnetic fields. For expediency,
Externí odkaz:
https://doaj.org/article/8c8fc8f0c9834776b616d8ebfbd04d5e
Autor:
Shota Chiba, Takeshi Imamura, Munetoshi Tokumaru, Daikou Shiota, Takuma Matsumoto, Hiroki Ando, Hiroshi Takeuchi, Yasuhiro Murata, Atsushi Yamazaki, Bernd Häusler, Martin Pätzold
Publikováno v:
Solar Physics. 298
Publikováno v:
Solar Physics. 298
Interplanetary scintillation (IPS) analysis is an effective technique for remotely sensing solar-wind disturbances, such as stream-interaction regions (SIRs) and coronal mass ejections (CMEs), which are the main drivers of space weather. Here, we emp
Autor:
Cheng-Min Zhang, Ye-Zhao Yu, Li-Jia Liu, Xi-Zhen Zhang, O. Chang, Jiguang Lu, J. C. Mejia-Ambriz, Bin Liu, Yu-Hai Qiu, Munetoshi Tokumaru, Mario M. Bisi, Ming Xiong, R A Fallow, Lei Yu, Bo Peng
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 504:5437-5443
Observations of interplanetary scintillation (IPS) are an efficient remote-sensing method to study the solar wind and inner heliosphere. From 2016 to 2018, some distinctive observations of IPS sources like 3C 286 and 3C 279 were accomplished with the
Autor:
Shota Chiba, Takeshi Imamura, Munetoshi Tokumaru, Daikou Shiota, Takuma Matsumoto, Hiroki Ando, Hiroshi Takeuchi, Yasuhiro Murata, Atsushi Yamazaki, Bernd Häusler, Martin Pätzold
Publikováno v:
Solar Physics. 297
Publikováno v:
Solar Physics. 297
Accurate measurements of the coronal plasma density profile, which varies with the solar cycle (SC), are necessary to elucidate the solar wind acceleration. In this study, the Crab pulsar is observed using the 327 MHz radio telescope at the Toyokawa
Autor:
J. V. Bageston, A. Dal Lago, Kazuoki Munakata, Ismail Sabbah, Nelson Jorge Schuch, C. R. Braga, Ezequiel Echer, Rrs Mendonca, W. Kihara, M. Rockenbach, Munetoshi Tokumaru, Masayoshi Kozai, M. L. Duldig, H. K. Al Jassar, M. M. Sharma, Chihiro Kato, T. Kuwabara, Paul Evenson, J. E. Humble
Publikováno v:
Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021).
We demonstrate that global observations of high-energy cosmic rays contribute to understanding unique characteristics of a large-scale magnetic flux rope (MFR) causing a magnetic storm in August 2018. Following a weak interplanetary shock on 25 Augus