79 citations · 471 across the 19 of their papers we have counts for
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Simulating the formation of Carinae's surrounding nebula through unstable triple evolution and stellar merger-induced eruption
Ryosuke Hirai, Philipp Podsiadlowski, Stanley P. Owocki +2
Carinae is an extraordinary massive star famous for its 19th century Great Eruption and the surrounding Homunculus nebula ejected in that event. The cause of this eruption has…
Formation pathway for lonely stripped-envelope supernova progenitors: implications for Cassiopeia A
Ryosuke Hirai, Toshiki Sato, Philipp Podsiadlowski +2
We explore a new scenario for producing stripped-envelope supernova progenitors. In our scenario, the stripped-envelope supernova is the second supernova of the binary, in which th…
Neutron Star Extreme Matter Observatory: A kilohertz-band gravitational-wave detector in the global network
K. Ackley, V. B. Adya, P. Agrawal +160
Gravitational waves from coalescing neutron stars encode information about nuclear matter at extreme densities, inaccessible by laboratory experiments. The late inspiral is influen…
The sensitivity of presupernova neutrinos to stellar evolution models
Chinami Kato, Ryosuke Hirai, Hiroki Nagakura
We examine the sensitivity of neutrino emissions to stellar evolution models for a 15 progenitor, paying particular attention to a phase prior to the collapse. We demonstr…
A Sub-Solar Metallicity Progenitor for Cassiopeia A, the remnant of a Type IIb Supernova
Toshiki Sato, Takashi Yoshida, Hideyuki Umeda +7
We report, for the first time, the detection of the Mn-K line in the Type IIb supernova (SN IIb) remnant, Cassiopeia A. Manganese (Mn after decay of Co), a neutron…