317 citations · 1.2k across the 32 of their papers we have counts for
9 papers · 1 filter
Dynamical evolution of dark matter subhaloes in the Milky Way: role of the Galactic disc
Junnan Shen, Go Ogiya, Jens Stücker
Dark matter (DM) subhaloes orbiting inside the Milky Way (MW) are promising targets for DM searches, and reliable predictions for the detectability and spatial distribution of thei…
Examining the effects of dark matter spikes on eccentric intermediate mass ratio inspirals using N-body simulations
Diptajyoti Mukherjee, A. Miguel Holgado, Go Ogiya +1
Recent studies suggest that dark matter (DM) spikes around intermediate-mass black holes could cause observable dephasing in gravitational wave (GW) signals from Intermediate Mass…
The effect of stellar encounters on the dark matter annihilation signal from prompt cusps
Jens Stücker, Go Ogiya, Simon D. M. White +1
Prompt cusps are the densest quasi-equilibrium dark matter objects; one forms at the instant of collapse within every isolated peak of the initial cosmological density field. They…
Tidal Stripping in the Adiabatic Limit
Jens Stücker, Go Ogiya, Raul E. Angulo +2
We present a model for the remnants of haloes that have gone through an adiabatic tidal stripping process. We show that this model exactly reproduces the remnant of an NFW halo tha…
What sets the central structure of dark matter haloes?
Go Ogiya, Oliver Hahn
Dark matter (DM) haloes forming near the thermal cut-off scale of the density perturbations are unique, since they are the smallest objects and form through monolithic gravitationa…
Dynamical Evolution of Primordial Dark Matter Haloes through Mergers
Go Ogiya, Daisuke Nagai, Tomoaki Ishiyama
Primordial dark matter (DM) haloes are the smallest gravitationally bound DM structures from which the first stars, black holes, and galaxies form and grow in the early universe. H…
The connection between the cusp-to-core transformation and observational universalities of DM halos
Go Ogiya, Masao Mori, Tomoaki Ishiyama +1
Observations have revealed interesting universal properties of dark matter (DM) halos especially around low-mass galaxies. Strigari et al. (2008) showed that DM halos have common e…
The Core-Cusp Problem in Cold Dark Matter Halos and Supernova Feedback: Effects of Oscillation
Go Ogiya, Masao Mori
This study investigates the dynamical response of dark matter (DM) halos to recurrent starbursts in forming less-massive galaxies to solve the core-cusp problem. The gas, which is…
The core-cusp problem in cold dark matter halos and supernova feedback: Effects of Mass Loss
Go Ogiya, Masao Mori
The core-cusp problem remains as one of the unsolved discrepancies between observations and theories predicted by the standard paradigm of cold dark matter (CDM) cosmology. To solv…