University of Tsukuba, Center for Computational Sciences
A gravitational collapse supernova is an explosion of a massive star at the end of its evolution. The explosion mechanism of supernovae is an unsolved problem in astrophysics. Large-scale numerical simulation studies of supernovae overcame the "failure to reproduce the explosion" problem in the 2000s and the "failure to reproduce...
The realization of direct imaging of supermassive black holes has opened a new horizon for understanding the mysterious driving mechanism of active galactic nuclear jets. We have taken this opportunity to investigate the structure of accretion disks and jets in the vicinity of black holes through the prediction of polarization...
Star formation activity in disk galaxies is known to depend on the structure of the galaxy (e.g., center, arms, bars, etc.). The dependence is particularly pronounced in barred spiral galaxies, where active star formation is observed in the arms, while star formation is weak (low star formation rate) in the...
Stars form in high-density regions in molecular clouds, which are known to be filamentary. The formation and evolution of filaments are important because they determine the initial conditions for star formation. In this presentation, I will report our results on simulations of filament formation and evolution. It is known that...
The Cosmic Microwave Background Radiation (CMB), the afterglow of the Big Bang that has expanded with the evolution of the universe, contains 13.8 billion years of history. Currently, studies on the detailed observation of the CMB polarization fluctuation patterns are attracting a great deal of attention. Many research groups are...
Since its discovery in the 1970s, the microquasar SS433 has attracted much attention as one of the most active jet objects in our Galaxy and has been the subject of numerous studies. However, there are still many unresolved questions, such as the identity of the main star and companion star...
The James Webb Space Telescope (JWST) is opening a new window of the most distant universe and will unveil the early growth of supermassive black holes (BHs) in the first galaxies. The existence of supermassive massive BHs observed when the universe was younger than one billion years strongly constrains their...
Observations of the cosmic background radiation have established the $\Lambda$ cold dark matter (CDM) model as the standard cosmological model, and on large scales the $\Lambda$CDM model has been very successful, providing the backbone of the cosmic large-scale structure. However, on small scales below 1 Mpc, there are still many...
A gravitational collapse supernova is an explosion of a massive star at the end of its evolution. The explosion mechanism of supernovae is an unsolved problem in astrophysics. Large-scale numerical simulation studies of supernovae overcame the "failure to reproduce the explosion" problem in the 2000s and the "failure to reproduce...
May 2023 15 : 30 supernovae
The realization of direct imaging of supermassive black holes has opened a new horizon for understanding the mysterious driving mechanism of active galactic nuclear jets. We have taken this opportunity to investigate the structure of accretion disks and jets in the vicinity of black holes through the prediction of polarization...
April 2023 15 : 30 AGN jets, polarization, and radiative transfer
Star formation activity in disk galaxies is known to depend on the structure of the galaxy (e.g., center, arms, bars, etc.). The dependence is particularly pronounced in barred spiral galaxies, where active star formation is observed in the arms, while star formation is weak (low star formation rate) in the...
February 2023 15 : 30 molecular clouds, star formation, and galaxy evolution
Stars form in high-density regions in molecular clouds, which are known to be filamentary. The formation and evolution of filaments are important because they determine the initial conditions for star formation. In this presentation, I will report our results on simulations of filament formation and evolution. It is known that...
January 2023 15 : 30 star formation, molecular clouds, and MHD
The Cosmic Microwave Background Radiation (CMB), the afterglow of the Big Bang that has expanded with the evolution of the universe, contains 13.8 billion years of history. Currently, studies on the detailed observation of the CMB polarization fluctuation patterns are attracting a great deal of attention. Many research groups are...
December 2022 15 : 00 CMB, cosmology, and B-mode polarization
Since its discovery in the 1970s, the microquasar SS433 has attracted much attention as one of the most active jet objects in our Galaxy and has been the subject of numerous studies. However, there are still many unresolved questions, such as the identity of the main star and companion star...
November 2022 15 : 30 cosmic rays and observations
The James Webb Space Telescope (JWST) is opening a new window of the most distant universe and will unveil the early growth of supermassive black holes (BHs) in the first galaxies. The existence of supermassive massive BHs observed when the universe was younger than one billion years strongly constrains their...
October 2022 15 : 30 early universe, SMBH, and radiation hydrodynamics
Observations of the cosmic background radiation have established the $\Lambda$ cold dark matter (CDM) model as the standard cosmological model, and on large scales the $\Lambda$CDM model has been very successful, providing the backbone of the cosmic large-scale structure. However, on small scales below 1 Mpc, there are still many...
September 2022 15 : 00 cosmological simulations, CGM, and IGM
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