Hi. I am an associate professor in the Physics and Astronomy Department at James Madison University (Harrisonburg, VA). I am from Osaka, Japan.
My research expertise is high-energy X-ray astrophysics. I am studying physics of compact objects particularly focusing on various energetic phenomena produced by magnetized gas (plasma) near accretion disks under strong gravity of central black holes from a theoretical standpoint. By constructing semi-analytic models I have been investigating the physical properties of accreting plasma as well as outflows including their geometry and observational signatures that can in principle be spectroscopically detected in UV/X-ray band. My research is relevant for both galactic black hole binaries (i.e. small black holes) in our Milky Way Galaxy as well as active galactic nuclei (AGNs) at the center of many luminous galaxies (i.e. supermassive black holes) beyond our own Miky Way.
To this end I utilize the well-established theoretical framework called general relativistic magnetohydrodynamics (GRMHD) that describes the physical property of plasma in the presence of background magnetic fields under strong gravity. By numerically solving the MHD equations along with other conditions appropriate under the extreme environment, one can obtain interesting insights into its observational consequences from such plasma in "distorted" spacetime. While spending more time building models from the first principle, I also take advantage of the state-of-the-art data obtained with a number of space-born X-ray observatories as international missions; namely, Suzaku, Chandra, XMM-Newton. Finally, I also collaborate with observers across the globe to further develop physically more reliable models. For that matter, rigorous comparison with the latest data is indeed crucial for theoretical work.
My research will further facilitate state-of-the-art observations made with future X-ray missions using micro-calorimeters (e.g. XRISM and Athena) in an attempt to better understand the fundamental physical processes responsible for accretion and outflow physics in AGNs and XRBs.
My research expertise is high-energy X-ray astrophysics. I am studying physics of compact objects particularly focusing on various energetic phenomena produced by magnetized gas (plasma) near accretion disks under strong gravity of central black holes from a theoretical standpoint. By constructing semi-analytic models I have been investigating the physical properties of accreting plasma as well as outflows including their geometry and observational signatures that can in principle be spectroscopically detected in UV/X-ray band. My research is relevant for both galactic black hole binaries (i.e. small black holes) in our Milky Way Galaxy as well as active galactic nuclei (AGNs) at the center of many luminous galaxies (i.e. supermassive black holes) beyond our own Miky Way.
To this end I utilize the well-established theoretical framework called general relativistic magnetohydrodynamics (GRMHD) that describes the physical property of plasma in the presence of background magnetic fields under strong gravity. By numerically solving the MHD equations along with other conditions appropriate under the extreme environment, one can obtain interesting insights into its observational consequences from such plasma in "distorted" spacetime. While spending more time building models from the first principle, I also take advantage of the state-of-the-art data obtained with a number of space-born X-ray observatories as international missions; namely, Suzaku, Chandra, XMM-Newton. Finally, I also collaborate with observers across the globe to further develop physically more reliable models. For that matter, rigorous comparison with the latest data is indeed crucial for theoretical work.
My research will further facilitate state-of-the-art observations made with future X-ray missions using micro-calorimeters (e.g. XRISM and Athena) in an attempt to better understand the fundamental physical processes responsible for accretion and outflow physics in AGNs and XRBs.
Simulating AGN X-Ray Obscuration
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