62 citations · 308 across the 14 of their papers we have counts for
9 papers · 1 filter
Three Dimensional Line Transfer Study of Energy Sources in Compact Molecular Gas in Active Galaxies -- AGN/Starburst Connection --
Masako Yamada, Wada Keiichi, Kohji Tomisaka
Recent observations suggest molecular line ratios in millimeter and submillimeter bands may be a good tool to reveal the long-standing question on the origin of energy sources in o…
Three Dimensional Molecular Line Transfer Study of Extragalactic ISM : AGN/Starburst Connection
Masako Yamada
Molecular gas in external galaxies is a subject of crucial importance for observational and theoretical studies of galaxy formation. Compact molecular gas around an active galactic…
HCN to HCO^+ Millimeter Line Diagnostics of AGN Molecular Torus I : Radiative Transfer Modeling
Masako Yamada, Keiichi Wada, Kohji Tomisaka
We explore millimeter line diagnostics of an obscuring molecular torus modeled by a hydrodynamic simulation with three-dimensional nonLTE radiative transfer calculations. Based on…
Synthetic Observations of Carbon Lines of Turbulent Flows in Diffuse Multiphase Interstellar Medium
M. Yamada, H. Koyama, K. Omukai +1
We examine observational characteristics of multi-phase turbulent flows in the diffuse interstellar medium (ISM) using a synthetic radiation field of atomic and molecular lines. We…
Heating of Intracluster Gas by Jet Activities of AGN: Is the "Preheating" Scenario Realistic?
Masako Yamada, Yutaka Fujita
We investigate the non-gravitational heating of hot gas in clusters of galaxies (intracluster medium; ICM) on the assumption that the gas is heated well before cluster formation ('…
The Sunyaev-Zel'dovich Effect by Cocoons of Radio Galaxies
Masako Yamada, Naoshi Sugiyama, Joseph Silk
We estimate the deformation of the cosmic microwave background radiation by the hot region (``cocoon'') around a radio galaxy. A simple model is adopted for cocoon evolution while…