193 citations · 1.4k across the 56 of their papers we have counts for
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Spin-down of solar-mass protostars in magnetospheric accretion paradigm
Shinsuke Takasao, Masanobu Kunitomo, Takeru K. Suzuki +2
Stellar spin is one of the fundamental quantities that characterize a star itself and its planetary system. Nevertheless, stellar spin-down mechanisms in protostellar and pre-main-…
Assessing the capability of a model-based stellar XUV estimation
Munehito Shoda, Kosuke Namekata, Shinsuke Takasao
Stellar XUV (X-ray and extreme ultraviolet) emission drives the heating and chemical reactions in planetary atmospheres and protoplanetary disks, and therefore, a proper estimation…
Magnetising galaxies with cold inflows
Nicolas Ledos, Evangelia Ntormousi, Shinsuke Takasao +1
High-redshift () galaxies accrete circumgalactic gas through cold streams. Recent high-resolution MHD simulations of these streams showed a significant amplification of t…
Broadening the Canonical Picture of EUV-Driven Photoevaporation of Accretion Disks
Riouhei Nakatani, Neal J. Turner, Shinsuke Takasao
Photoevaporation driven by hydrogen-ionizing radiation, also known as extreme-ultraviolet (EUV), profoundly shapes the lives of diverse astrophysical objects. Focusing here mainly…
Effect of time-varying X-ray emission from stellar flares on the ionization of protoplanetary disks
Haruka Washinoue, Shinsuke Takasao, Kenji Furuya
X-rays have significant impacts on cold, weakly ionized protoplanetary disks by increasing the ionization rate and driving chemical reactions. Stellar flares are explosions that em…
Upper Limit on the Coronal Cosmic Ray Energy Budget in Seyfert Galaxies
Yoshiyuki Inoue, Shinsuke Takasao, Dmitry Khangulyan
The IceCube collaboration has reported possible detections of high-energy neutrinos from nearby Seyfert galaxies. While central hot coronae are proposed as the primary neutrino pro…
Dynamics Near the Inner Dead-Zone Edges in a Proprotoplanetary Disk
Kazunari Iwasaki, Kengo Tomida, Shinsuke Takasao +2
We perform three-dimensional global non-ideal magnetohydrodynamic simulations of a protoplanetary disk containing the inner dead-zone edge. We take into account realistic diffusion…