Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Daikichi Seki"'
Publikováno v:
Frontiers in Sustainability, Vol 3 (2022)
This study examined whether nighttime light can be a proxy for building height. It is important for estimating an urban environment and urban design and understanding industrial clusters. However, it is necessary to purchase height data for a wide ra
Externí odkaz:
https://doaj.org/article/3ad9e94b9ef843e880b30964843f00ae
Publikováno v:
Earth, Planets and Space, Vol 73, Iss 1, Pp 1-10 (2021)
Abstract It is widely recognised that filament disappearances or eruptions are frequently associated with Coronal Mass Ejections (CMEs). Since CMEs are a major source of disturbances of the space environment surrounding the Earth, it is important to
Externí odkaz:
https://doaj.org/article/104fc6dd599f4b95bba4696e0adf5e5d
Autor:
Kosuke Namekata, Hiroyuki Maehara, Satoshi Honda, Yuta Notsu, Soshi Okamoto, Jun Takahashi, Masaki Takayama, Tomohito Ohshima, Tomoki Saito, Noriyuki Katoh, Miyako Tozuka, Katsuhiro L. Murata, Futa Ogawa, Masafumi Niwano, Ryo Adachi, Motoki Oeda, Kazuki Shiraishi, Keisuke Isogai, Daikichi Seki, Takako T. Ishii, Kiyoshi Ichimoto, Daisaku Nogami, Kazunari Shibata
Publikováno v:
Nature Astronomy. 6:241-248
Solar flares are often accompanied by filament/prominence eruptions (~10⁴ K and ~10¹⁰⁻¹¹ cm⁻³), sometimes leading to coronal mass ejections that directly affect the Earth’s environment. ‘Superflares’ are found on some active solar-t
Autor:
Daikichi Seki, Giulio Del Zanna, Hiroaki Isobe, Takako T. Ishii, Kiyoshi Ichimoto, Kenichi Otsuji, Kazunari Shibata, Takahito Sakaue
A filament, a dense cool plasma supported by the magnetic fields in the solar corona, often becomes unstable and erupts. It is empirically known that the filament often demonstrates some activations such as a turbulent motion prior to eruption. In ou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c281b29504b233fbdd46fbeb668f4032
http://arxiv.org/abs/2106.11875
http://arxiv.org/abs/2106.11875
Publikováno v:
Earth, Planets and Space, Vol 73, Iss 1, Pp 1-10 (2021)
It is widely recognised that filament disappearances or eruptions are frequently associated with Coronal Mass Ejections (CMEs). Since CMEs are a major source of disturbances of the space environment surrounding the Earth, it is important to investiga
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::26a68a71b06d6a057a917d3069b23224
Autor:
Takako T. Ishii, Kazunari Shibata, Kiyoshi Ichimoto, Daikichi Seki, Ayumi Asai, Hiroaki Isobe, Kenichi Otsuji, Kumi Hirose, Satoru Ueno, Denis P. Cabezas, Tomoya Iju
This paper describes a new SMART/SDDI Filament Disappearance Catalogue, in which we listed almost all the filament disappearance events that the Solar Dynamics Doppler Imager (SDDI) has observed since its installation on the Solar Magnetic Activity R
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::924d37e48512e65e283a3d59da1f2c4f
https://doi.org/10.31401/sungeo.2020.02.01
https://doi.org/10.31401/sungeo.2020.02.01
Autor:
Kazunari Shibata, Hiroaki Isobe, Daikichi Seki, Kiyoshi Ichimoto, Takako T. Ishii, Kenichi Otsuji
Publikováno v:
Publications of the Astronomical Society of Japan. 71
Filaments, the dense cooler plasma floating in the solar corona supported by magnetic fields, generally exhibit certain activations before they erupt. In our previous study (Seki et al. 2017 ), we observed that the standard deviation of the line-of-s
We present a study on the evolution of the small scale velocity field in a solar filament as it approaches to the eruption. The observation was carried out by the Solar Dynamics Doppler Imager (SDDI) that was newly installed on the Solar Magnetic Act
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b1f8fb867317dde21a8b07623d963621
http://arxiv.org/abs/1705.09041
http://arxiv.org/abs/1705.09041
Publikováno v:
Astrophysical Journal Letters; 7/10/2017, Vol. 843 Issue 2, p1-1, 1p