144 citations · 2k across the 79 of their papers we have counts for
8 papers · 1 filter
On the population III binary black hole mergers with intermediate mass black holes: dependence on common envelope parameter
Kotaro Hijikawa, Tomoya Kinugawa, Ataru Tanikawa +2
The current gravitational wave (GW) detectors have successfully observed many binary compact objects, and the third generation ground-based GW detectors such as Einstein telescope…
Search for a Black Hole Binary in Gaia DR3 Astrometric Binary Stars with Spectroscopic Data
Ataru Tanikawa, Kohei Hattori, Norita Kawanaka +3
We report the discovery of a candidate binary system consisting of a black hole (BH) and a red giant branch star from the Gaia DR3. This binary system is discovered from 64108 bina…
Gravitational wave of intermediate-mass black holes in Population III star clusters
Long Wang, Ataru Tanikawa, Michiko Fujii
Previous theoretical studies suggest that the Population III (Pop3) stars tend to form in extremely metal poor gas clouds with approximately embedded in mini dark ma…
Revisiting Common Envelope Evolution -- A New Semi-Analytic Model for N-body and Population Synthesis Codes
Alessandro Alberto Trani, Steven Rieder, Ataru Tanikawa +5
We present a novel way of modeling common envelope evolution in binary and few-body systems. We consider the common envelope inspiral as driven by a drag force with a power-law dep…
The impact of stellar evolution on rotating star clusters: the gravothermal-gravogyro catastrophe and the formation of a bar of black holes
A. W. H. Kamlah, R. Spurzem, P. Berczik +7
We present results from a suite of eight direct N-body simulations, performed with \textsc{Nbody6++GPU}, representing realistic models of rotating star clusters with up to $1.1\tim…
Euclid detectability of pair instability supernovae in binary population synthesis models consistent with merging binary black holes
Ataru Tanikawa, Takashi J. Moriya, Nozomu Tominaga +1
We infer the expected detection number of pair instability supernovae (PISNe) during the operation of the Euclid space telescope based on binary population models. Our models repro…