Zobrazeno 1 - 10
of 58
pro vyhledávání: '"Kaneko, Takafumi"'
We performed numerical simulations to study mechanisms of solar prominence formation triggered by a single heating event. In the widely accepted ``chromospheric-evaporation condensation" model, localized heating at footpoints of a coronal loop drives
Externí odkaz:
http://arxiv.org/abs/2411.18193
Solar energetic events are caused by the release of magnetic energy accumulated in the solar atmosphere. To understand their initiating physical mechanisms, the dynamics of the coronal magnetic fields must be studied. Unfortunately, the dominant mech
Externí odkaz:
http://arxiv.org/abs/2408.06430
Many particles are accelerated during solar flares. To understand the acceleration and propagation processes of electrons, we require the pitch-angle distributions of the particles. The pitch angle of accelerated electrons has been estimated from the
Externí odkaz:
http://arxiv.org/abs/2310.03090
Impact of subsurface convective flows on the formation of sunspot magnetic field and energy build-up
Strong solar flares occur in $\delta $-spots characterized by the opposite-polarity magnetic fluxes in a single penumbra. Sunspot formation via flux emergence from the convection zone to the photosphere can be strongly affected by convective turbulen
Externí odkaz:
http://arxiv.org/abs/2209.06311
Solar flares and plasma eruptions are sudden releases of magnetic energy stored in the plasma atmosphere. To understand the physical mechanisms governing their occurrences, three-dimensional magnetic fields from the photosphere up to the corona must
Externí odkaz:
http://arxiv.org/abs/2101.12395
Autor:
Kaneko, Takafumi, Yokoyama, Takaaki
The interiors of quiescent prominences are filled with turbulent flows. The evolution of upflow plumes, descending pillars, and vortex motions has been clearly detected in high-resolution observations. The Rayleigh-Taylor instability is thought to be
Externí odkaz:
http://arxiv.org/abs/1811.00828
Autor:
Kaneko, Takafumi, Yokoyama, Takaaki
We propose a reconnection-condensation model in which topological change in a coronal magnetic field via reconnection triggers radiative condensation, thereby resulting in prominence formation. Previous observational studies have suggested that recon
Externí odkaz:
http://arxiv.org/abs/1706.10008
Autor:
Kaneko, Takafumi, Yokoyama, Takaaki
We propose an in-situ formation model for inverse-polarity solar prominence and demonstrate it using self-consistent 2.5-dimensional magnetohydrodynamics simulations, including thermal conduction along magnetic fields and optically thin radiative coo
Externí odkaz:
http://arxiv.org/abs/1504.08091
Autor:
Segawa, Shuichi, Nakakita, Yasukazu, Takata, Yoshihiro, Wakita, Yoshihisa, Kaneko, Takafumi, Kaneda, Hirotaka, Watari, Junji, Yasui, Hisako
Publikováno v:
In International Journal of Food Microbiology 2008 121(1):1-10
Autor:
Sakano, Yuichi, Okada, Yukio, Matsunaga, Akiko, Suwama, Takaharu, Kaneko, Takafumi, Ito, Kazutoshi, Noguchi, Hiroshi, Abe, Ikuro *
Publikováno v:
In Phytochemistry 2004 65(17):2439-2446