256 citations · 2.5k across the 78 of their papers we have counts for
4 papers · 1 filter
Modeling photometric variations due to a global inhomogeneity on an obliquely rotating star: application to lightcurves of white dwarfs
Yasushi Suto, Shin Sasaki, Masataka Aizawa +2
We develop a general framework to compute photometric variations induced by the oblique rotation of a star with an axisymmetric inhomogeneous surface. We apply the framework to com…
Fast optical flares from M dwarfs detected by a one-second-cadence survey with Tomo-e Gozen
Masataka Aizawa, Kojiro Kawana, Kazumi Kashiyama +18
We report a one-second-cadence wide-field survey for M-dwarf flares using the Tomo-e Gozen camera mounted on the Kiso Schmidt telescope. We detect 22 flares from M3-M5 dwarfs with…
X-raying the Birth of Binary Neutron Stars and Neutron Star-Black Hole Binaries
Kazumi Kashiyama, Ryo Sawada, Yudai Suwa
We consider fallback accretion after an ultra-stripped supernova (USSN) that accompanies formation of a binary neutron star (BNS) or a neutron star-black hole binary (NS-BH). The f…
Variable thermal energy injection from magnetar spin down as a possible cause of stripped-envelope supernova light-curve bumps
Takashi J. Moriya, Kohta Murase, Kazumi Kashiyama +1
Luminosity evolution of some stripped-envelope supernovae such as Type I superluminous supernovae is difficult to be explained by the canonical 56Ni nuclear decay heating. A popula…