Zobrazeno 1 - 10
of 103
pro vyhledávání: '"Ogiya, Go"'
Autor:
Pérez-Montaño, Luis Enrique, Sodi, Bernardo Cervantes, Rodriguez-Gomez, Vicente, Zhu, Qirong, Ogiya, Go
Employing the TNG100 run of the IllustrisTNG project, we characterize the environment of Low Surface Brightness Galaxies (LSBGs) across varying scales, from their associated dark matter halos to their distribution within the broader cosmic structure.
Externí odkaz:
http://arxiv.org/abs/2407.15529
Recent studies have postulated that the presence of dark matter (DM) spikes around IMBHs could lead to observable dephasing effects in gravitational wave (GW) signals emitted by Intermediate Mass Ratio Inspirals (IMRIs). While prior investigations pr
Externí odkaz:
http://arxiv.org/abs/2312.02275
Autor:
Ogiya, Go, Nagai, Daisuke
A narrow linear object extending $\sim 60 \,{\rm kpc}$ from the centre of a galaxy at redshift $z \sim 1$ has recently been discovered and interpreted as shocked gas filament forming stars. The host galaxy presents an irregular morphology, implying r
Externí odkaz:
http://arxiv.org/abs/2309.09031
Galaxy mergers are common processes in the Universe. As a large fraction of galaxies hosts at their centres a central supermassive black hole (SMBH), mergers can lead to the formation of a supermassive black hole binary (SMBHB). The formation of such
Externí odkaz:
http://arxiv.org/abs/2303.12826
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 have power-law density profiles, $\rho \propto r^{-1.5}$ with central
Externí odkaz:
http://arxiv.org/abs/2301.04670
It has been suggested that a trail of diffuse galaxies, including two dark matter deficient galaxies (DMDGs), in the vicinity of NGC1052 formed because of a high-speed collision between two gas-rich dwarf galaxies, one bound to NGC1052 and the other
Externí odkaz:
http://arxiv.org/abs/2211.05993
Autor:
Aguirre-Santaella, Alejandra, Sánchez-Conde, Miguel A., Ogiya, Go, Stücker, Jens, Angulo, Raul E.
In this work, we carry out a suite of specially-designed numerical simulations to shed further light on dark matter (DM) subhalo survival at mass scales relevant for gamma-ray DM searches, a topic subject to intense debate nowadays. Specifically, we
Externí odkaz:
http://arxiv.org/abs/2207.08652
Autor:
Stücker, Jens, Ogiya, Go, Angulo, Raul E., Aguirre-Santaella, Alejandra, Sánchez-Conde, Miguel A.
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 that is exposed to a slowly increasing isotropic tidal field and approxim
Externí odkaz:
http://arxiv.org/abs/2207.00604
Massive Black Hole (MBH) binaries are considered to be one of the most important sources of Gravitational Waves (GW) that can be detected by GW detectors like LISA. However, there are a lot of uncertainties in the dynamics of MBH binaries in the stag
Externí odkaz:
http://arxiv.org/abs/2205.12289
Autor:
Ogiya, Go, Nagai, Daisuke
The rotation curves of some star forming massive galaxies at redshift two decline over the radial range of a few times the effective radius, indicating a significant deficit of dark matter (DM) mass in the galaxy centre. The DM mass deficit is interp
Externí odkaz:
http://arxiv.org/abs/2205.04577