4 papers
Force convergence in Monte Carlo Lyman-alpha radiative transfer
Joshua Kasiri, Aaron Smith, Kevin Lorinc +2
Monte Carlo radiative transfer (MCRT) is widely used to model Lyman-alpha (Lya) resonant-line transport, but convergence is difficult to assess in optically thick media where photo…
Blue-tilted Runnings and the JWST Early Galaxy Tension
Mikage U. Kobayashi, Gen Chiaki, Kazutaka Kimura +4
The recent James Webb Space Telescope (JWST) observations reported the unexpectedly large abundance of massive galaxies with stellar masses of at high reds…
An Explicit M1 Radiation-hydrodynamics Scheme for 3D Protostellar Evolution
Kazutaka Kimura, Kazuyuki Sugimura, Takashi Hosokawa +2
We present a radiation-hydrodynamics (RHD) scheme that enables 3D simulations resolving both protostellar interiors and their surrounding accretion flows within a single framework,…
Massive Black Hole Seed Formation in Strong X-ray Environments at High Redshift
Kazutaka Kimura, Kohei Inayoshi, Kazuyuki Omukai
Direct collapse of pristine gas in early galaxies is a promissing pathway for forming supermassive black holes (BHs) powering active galactic nuclei (AGNs) at the epoch of reioniza…