23 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Kyoto UniversityJP4 papers
- Shiga UniversityJP2 papers
- Armagh Observatory & PlanetariumGB1 paper
- Disaster Prevention Research Institute, Kyoto UniversityJP1 paper
- Doshisha UniversityJP1 paper
- Inter-University Centre for Astronomy and AstrophysicsIN1 paper
- Kyoto Pharmaceutical UniversityJP1 paper
- Max Planck Institute for AstronomyDE1 paper
- Max Planck SocietyDE1 paper
- National Institute of Information and Communications TechnologyJP1 paper
- Research Institute for Sustainable Humanosphere1 paper
- Rutherford Appleton LaboratoryGB1 paper
7 papers
Small-scale Turbulent Motion of the Plasma in a Solar Filament as the Precursor of Eruption
Daikichi Seki, Kenichi Otsuji, Hiroaki Isobe +5
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 demonstrate…
On the ratios of \ion{Si}{4} lines (1394/1403) in an emerging flux region
Durgesh Tripathi, V. N. Nived, Hiroaki Isobe +1
The resonance lines of \ion{Si}{4} formed at 1394 and 1403 Å are the most critical for the diagnostics of the solar transition region in the observations of the Interface Region…
Intense geomagnetic storm during Maunder minimum possibly by a quiescent filament eruption
Hiroaki Isobe, Yusuke Ebihara, Akito D. Kawamura +2
The sun occasionally undergoes the so-called grand minima, in which its magnetic activity, measured by the number of sunspots, is suppressed for decades. The most prominent grand m…
Small-scale motions in solar filaments as the precursors of eruptions
Daikichi Seki, Kenichi Otsuji, Hiroaki Isobe +3
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 e…
Space Weather Prediction from the Ground: Case of CHAIN
Daikichi Seki, Satoru Ueno, Hiroaki Isobe +5
In this article, we insist on the importance and the challenges of the prediction of solar eruptive phenomena including flares, coronal mass ejections (CME), and filament eruptions…
The origin and formation of cuspy density profiles through violent relaxation of stellar systems
S. Hozumi, A. Burkert, T. Fujiwara
It is shown that the cuspy density distributions observed in the cores of elliptical galaxies can be realized by dissipationless gravitational collapse. The initial models consist…
Growth of Velocity Dispersions for Collapsing Spherical Stellar Systems
S. Hozumi, T. Fujiwara, Y. Kan-ya
First, we have ensured that spherical nonrotating collisionless systems collapse with almost retaining spherical configurations during initial contraction phases even if they are a…