研究成果・発表論文

QWIND3: UV line-driven accretion disc wind models for AGN feedback

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Quera-Bofarull, Arnau,   Done, Chris,   Lacey, Cedric G.,   Nomura, Mariko,   Ohsuga, Ken

The ultraviolet (UV) bright accretion disc in active galactic nuclei (AGNs) should give rise to line driving, producing a powerful wind that may play an important role in AGN feedback as well as in producing structures like the broad-line region. How...

Large-scale outflow structure and radiation properties of super-Eddington flow: Dependence on the accretion rates

Image

Yoshioka, Shogo,   Mineshige, Shin,   Ohsuga, Ken,   Kawashima, Tomohisa,   Kitaki, Takaaki

In order to evaluate the impacts made by super-Eddington accretors on their environments precisely, it is essential to guarantee a large enough simulation box and long computational time to avoid any artefacts from numerical settings as much as possi...

3D photon conserving code for time-dependent general relativistic radiative transfer: CARTOON

Image

Takahashi, Mikiya M.,   Ohsuga, Ken,   Takahashi, Rohta,   Ogawa, Takumi,   Umemura, Masayuki,   Asahina, Yuta

We develop the three-dimensional general relativistic radiative transfer code: CARTOON (Calculation code of Authentic Radiative Transfer based On phOton Number conservation in curved space-time) which is improved from the two-dimensional code: ARTIST...

Theoretical Investigation into a Possibility of Formation of Propylene Oxide Homochirality in Space

Image

Hori, Yuta,   Nakamura, Honami,   Sakawa, Takahide,   Watanabe, Natsuki,   Kayanuma, Megumi,   Shoji, Mitsuo

The preferential synthesis or destruction of a single enantiomer by ultraviolet circularly polarized light (UV-CPL) has been proposed as a possible triggering mechanism for the extraterrestrial origin of homochirality. Herein, we investigate the phot...

Modelling observable signatures of jet-ISM interaction: thermal emission and gas kinematics

Image

Meenakshi, Moun,   Mukherjee, Dipanjan,   Wagner, Alexander Y.,   Nesvadba, Nicole P.~H.,   Bicknell, Geoffrey V.,   Morganti, Raffaella

Relativistic jets are believed to have a substantial impact on the gas dynamics and evolution of the interstellar medium (ISM) of their host galaxies. In this paper, we aim to draw a link between the simulations and the observable signatures of jet-I...

Jet-ISM Interaction in NGC 1167/B2 0258+35, an LINER with an AGN Past

Image

Fabbiano, G.,   Paggi, A.,   Morganti, R.,   Baloković, M.,   Elvis, M.,   Mukherjee, D.

We report the results of joint Chandra/ACIS-NuSTAR deep observations of NGC 1167, the host galaxy of the young radio jet B2 0258+35. In the ACIS data, we detect X-ray emission, extended both along and orthogonal to the jet. At the end of the southeas...

The formation of the first quasars: the black hole seeds, accretion, and feedback models

Image

Zhu, Qirong,   Li, Yuexing,   Li, Yiting,   Maji, Moupiya,   Yajima, Hidenobu,   Schneider, Raffaella

Supermassive black holes (SMBHs) of ~ 109 M⊙ are generally believed to be the central engines of the luminous quasars observed at z ≳ 6, but their astrophysical origin remains elusive. To investigate the formation of these distant quasars, we perform...

Component of Energy Flow from Supercritical Accretion Disks Around Rotating Stellar Mass Black Holes

Image

Utsumi, Aoto,   Ohsuga, Ken,   Takahashi, Hiroyuki R.,   Asahina, Yuta

By performing two-dimensional axisymmetric general relativistic radiation magnetohydrodynamics simulations with spin parameter a* varying from -0.9 to 0.9, we investigate the dependence on the black hole spin of the energy flow from a supercritical a...

Exploring the cosmic dawn and epoch of reionization with the 21 cm line

Image

Shimabukuro, Hayato,   Hasegawa, Kenji,   Kuchinomachi, Akira,   Yajima, Hidenobu,   Yoshiura, Shintaro

The dark age of the Universe, when no luminous object existed, ended with the birth of the first stars, galaxies, and black holes. This epoch is called cosmic dawn. Cosmic reionization is the major transition of the intergalactic medium in the Univer...

Investigating the Disk-Jet Structure in M87 through Flux Separation in the Linear and Circular Polarization Images

Image

Tsunetoe, Yuh,   Mineshige, Shin,   Kawashima, Tomohisa,   Ohsuga, Ken,   Akiyama, Kazunori,   Takahashi, Hiroyuki R.

For testing different electron temperature (T e) prescriptions in general relativistic magnetohydrodynamics (GRMHD) simulations through observations, we propose to utilize linear polarization (LP) and circular polarization (CP) images. We calculate t...

Structure of the super-Eddington outflow and its impact on the cosmological scale

Image

Botella, Ignacio,   Mineshige, Shin,   Kitaki, Takaaki,   Ohsuga, Ken,   Kawashima, Tomohisa

It is one of the biggest issues in black hole (BH) astrophysics how to evaluate BH feedback to its environments precisely. Aiming at studying the unique gas dynamics of super-Eddington flow around supermassive black hole (SMBH) seeds at high redshift...

General Relativistic Radiation Magnetohydrodynamics Simulations of Black Hole Accretion Disks: Comparison of Methods Based on Variable Eddington Tensor and Based on M1 Closure

Image

Asahina, Yuta,   Ohsuga, Ken

simulations of black hole accretion disks and disk winds in the range of mass accretion rate from 0.1 to 104.5 times the Eddington limit. In this paper, we compare the results of the INAZUMA code, in which the frequency- integrated time-dependent rad...

Image

QWIND3: UV line-driven accretion disc wind models for AGN feedback

Quera-Bofarull, Arnau,   Done, Chris,   Lacey, Cedric G.,   Nomura, Mariko,   Ohsuga, Ken

The ultraviolet (UV) bright accretion disc in active galactic nuclei (AGNs) should give rise to line driving, producing a powerful wind that may play an important role in AGN feedback as well as in producing structures like the broad-line region. How...

令和5年 1月   Monthly Notices of the Royal Astronomical Society
Image

Large-scale outflow structure and radiation properties of super-Eddington flow: Dependence on the accretion rates

Yoshioka, Shogo,   Mineshige, Shin,   Ohsuga, Ken,   Kawashima, Tomohisa,   Kitaki, Takaaki

In order to evaluate the impacts made by super-Eddington accretors on their environments precisely, it is essential to guarantee a large enough simulation box and long computational time to avoid any artefacts from numerical settings as much as possi...

令和4年 12月   Publications of the Astronomical Society of Japan
Image

3D photon conserving code for time-dependent general relativistic radiative transfer: CARTOON

Takahashi, Mikiya M.,   Ohsuga, Ken,   Takahashi, Rohta,   Ogawa, Takumi,   Umemura, Masayuki,   Asahina, Yuta

We develop the three-dimensional general relativistic radiative transfer code: CARTOON (Calculation code of Authentic Radiative Transfer based On phOton Number conservation in curved space-time) which is improved from the two-dimensional code: ARTIST...

令和4年 12月   Monthly Notices of the Royal Astronomical Society
Image

Theoretical Investigation into a Possibility of Formation of Propylene Oxide Homochirality in Space

Hori, Yuta,   Nakamura, Honami,   Sakawa, Takahide,   Watanabe, Natsuki,   Kayanuma, Megumi,   Shoji, Mitsuo

The preferential synthesis or destruction of a single enantiomer by ultraviolet circularly polarized light (UV-CPL) has been proposed as a possible triggering mechanism for the extraterrestrial origin of homochirality. Herein, we investigate the phot...

令和4年 11月   Astrobiology
Image

Modelling observable signatures of jet-ISM interaction: thermal emission and gas kinematics

Meenakshi, Moun,   Mukherjee, Dipanjan,   Wagner, Alexander Y.,   Nesvadba, Nicole P.~H.,   Bicknell, Geoffrey V.,   Morganti, Raffaella

Relativistic jets are believed to have a substantial impact on the gas dynamics and evolution of the interstellar medium (ISM) of their host galaxies. In this paper, we aim to draw a link between the simulations and the observable signatures of jet-I...

令和4年 10月   Monthly Notices of the Royal Astronomical Society
Image

Jet-ISM Interaction in NGC 1167/B2 0258+35, an LINER with an AGN Past

Fabbiano, G.,   Paggi, A.,   Morganti, R.,   Baloković, M.,   Elvis, M.,   Mukherjee, D.

We report the results of joint Chandra/ACIS-NuSTAR deep observations of NGC 1167, the host galaxy of the young radio jet B2 0258+35. In the ACIS data, we detect X-ray emission, extended both along and orthogonal to the jet. At the end of the southeas...

令和4年 10月   The Astrophysical Journal
Image

The formation of the first quasars: the black hole seeds, accretion, and feedback models

Zhu, Qirong,   Li, Yuexing,   Li, Yiting,   Maji, Moupiya,   Yajima, Hidenobu,   Schneider, Raffaella

Supermassive black holes (SMBHs) of ~ 109 M⊙ are generally believed to be the central engines of the luminous quasars observed at z ≳ 6, but their astrophysical origin remains elusive. To investigate the formation of these distant quasars, we perform...

令和4年 8月   Monthly Notices of the Royal Astronomical Society
Image

Component of Energy Flow from Supercritical Accretion Disks Around Rotating Stellar Mass Black Holes

Utsumi, Aoto,   Ohsuga, Ken,   Takahashi, Hiroyuki R.,   Asahina, Yuta

By performing two-dimensional axisymmetric general relativistic radiation magnetohydrodynamics simulations with spin parameter a* varying from -0.9 to 0.9, we investigate the dependence on the black hole spin of the energy flow from a supercritical a...

令和4年 8月   The Astrophysical Journal
Image

Exploring the cosmic dawn and epoch of reionization with the 21 cm line

Shimabukuro, Hayato,   Hasegawa, Kenji,   Kuchinomachi, Akira,   Yajima, Hidenobu,   Yoshiura, Shintaro

The dark age of the Universe, when no luminous object existed, ended with the birth of the first stars, galaxies, and black holes. This epoch is called cosmic dawn. Cosmic reionization is the major transition of the intergalactic medium in the Univer...

令和4年 6月   Publications of the Astronomical Society of Japan
Image

Investigating the Disk-Jet Structure in M87 through Flux Separation in the Linear and Circular Polarization Images

Tsunetoe, Yuh,   Mineshige, Shin,   Kawashima, Tomohisa,   Ohsuga, Ken,   Akiyama, Kazunori,   Takahashi, Hiroyuki R.

For testing different electron temperature (T e) prescriptions in general relativistic magnetohydrodynamics (GRMHD) simulations through observations, we propose to utilize linear polarization (LP) and circular polarization (CP) images. We calculate t...

令和4年 5月   The Astrophysical Journal
Image

Structure of the super-Eddington outflow and its impact on the cosmological scale

Botella, Ignacio,   Mineshige, Shin,   Kitaki, Takaaki,   Ohsuga, Ken,   Kawashima, Tomohisa

It is one of the biggest issues in black hole (BH) astrophysics how to evaluate BH feedback to its environments precisely. Aiming at studying the unique gas dynamics of super-Eddington flow around supermassive black hole (SMBH) seeds at high redshift...

令和4年 4月   Publications of the Astronomical Society of Japan
Image

General Relativistic Radiation Magnetohydrodynamics Simulations of Black Hole Accretion Disks: Comparison of Methods Based on Variable Eddington Tensor and Based on M1 Closure

Asahina, Yuta,   Ohsuga, Ken

simulations of black hole accretion disks and disk winds in the range of mass accretion rate from 0.1 to 104.5 times the Eddington limit. In this paper, we compare the results of the INAZUMA code, in which the frequency- integrated time-dependent rad...

令和4年 4月   The Astrophysical Journal

QWIND3: UV line-driven accretion disc wind models for AGN feedback

Quera-Bofarull, Arnau,   Done, Chris,   Lacey, Cedric G.,   Nomura, Mariko,   Ohsuga, Ken
令和5年 1月   Monthly Notices of the Royal Astronomical Society

Large-scale outflow structure and radiation properties of super-Eddington flow: Dependence on the accretion rates

Yoshioka, Shogo,   Mineshige, Shin,   Ohsuga, Ken,   Kawashima, Tomohisa,   Kitaki, Takaaki
令和4年 12月   Publications of the Astronomical Society of Japan

3D photon conserving code for time-dependent general relativistic radiative transfer: CARTOON

Takahashi, Mikiya M.,   Ohsuga, Ken,   Takahashi, Rohta,   Ogawa, Takumi,   Umemura, Masayuki,   Asahina, Yuta
令和4年 12月   Monthly Notices of the Royal Astronomical Society

Theoretical Investigation into a Possibility of Formation of Propylene Oxide Homochirality in Space

Hori, Yuta,   Nakamura, Honami,   Sakawa, Takahide,   Watanabe, Natsuki,   Kayanuma, Megumi,   Shoji, Mitsuo
令和4年 11月   Astrobiology

Modelling observable signatures of jet-ISM interaction: thermal emission and gas kinematics

Meenakshi, Moun,   Mukherjee, Dipanjan,   Wagner, Alexander Y.,   Nesvadba, Nicole P.~H.,   Bicknell, Geoffrey V.,   Morganti, Raffaella
令和4年 10月   Monthly Notices of the Royal Astronomical Society

Jet-ISM Interaction in NGC 1167/B2 0258+35, an LINER with an AGN Past

Fabbiano, G.,   Paggi, A.,   Morganti, R.,   Baloković, M.,   Elvis, M.,   Mukherjee, D.
令和4年 10月   The Astrophysical Journal

The formation of the first quasars: the black hole seeds, accretion, and feedback models

Zhu, Qirong,   Li, Yuexing,   Li, Yiting,   Maji, Moupiya,   Yajima, Hidenobu,   Schneider, Raffaella
令和4年 8月   Monthly Notices of the Royal Astronomical Society

Component of Energy Flow from Supercritical Accretion Disks Around Rotating Stellar Mass Black Holes

Utsumi, Aoto,   Ohsuga, Ken,   Takahashi, Hiroyuki R.,   Asahina, Yuta
令和4年 8月   The Astrophysical Journal

Exploring the cosmic dawn and epoch of reionization with the 21 cm line

Shimabukuro, Hayato,   Hasegawa, Kenji,   Kuchinomachi, Akira,   Yajima, Hidenobu,   Yoshiura, Shintaro
令和4年 6月   Publications of the Astronomical Society of Japan

Investigating the Disk-Jet Structure in M87 through Flux Separation in the Linear and Circular Polarization Images

Tsunetoe, Yuh,   Mineshige, Shin,   Kawashima, Tomohisa,   Ohsuga, Ken,   Akiyama, Kazunori,   Takahashi, Hiroyuki R.
令和4年 5月   The Astrophysical Journal

Structure of the super-Eddington outflow and its impact on the cosmological scale

Botella, Ignacio,   Mineshige, Shin,   Kitaki, Takaaki,   Ohsuga, Ken,   Kawashima, Tomohisa
令和4年 4月   Publications of the Astronomical Society of Japan

General Relativistic Radiation Magnetohydrodynamics Simulations of Black Hole Accretion Disks: Comparison of Methods Based on Variable Eddington Tensor and Based on M1 Closure

Asahina, Yuta,   Ohsuga, Ken
令和4年 4月   The Astrophysical Journal