Black Hole Astrophysics with VLBI 2022
Institute for Cosmic Ray Research,
the University of Tokyo (Kashiwa/On-line)
Recent VLBI observation, e.g., the Event Horizon Telescope (EHT) provided us powerful evidence of the presence of supermassive black holes and strongly magnetized plasma in the vicinity of the black holes in M87*. In lower frequency bands, the East Asia VLBI Network (EAVN) and KaVA are also getting the unprecedented results of jets and accretion flows in M87, Sgr A*, and other AGNs. From a broader perspective, the co-evolution of the black holes and their host galaxies through the merger of binary black holes and mass accretion is important in the cosmological context and has been intensively studied. Related to these themes, the mass supply mechanism from the circumnuclear region is absolutely essential and recent observation shows some evidence of them. This will potentially enable us to understand its connection to the horizon scale phenomena. Motivated by recent progress of these observations, theory and simulations of magnetohydrodynamics, kinetic plasma physics, and radiative transfer of accretion flows and relativistic jets have been also carried out vigorously and new perceptions have been attained.
The workshop will bring researchers working on observation and theory/simulations to discuss our present understanding and key questions towards the future of the spacetime of black holes, the physics of accretion flow, jets, winds, and the related high energy phenomena around compact objects.
Due to the situation of the COVID-19, the workshop will be a hybrid-type [in person (for domestic people) and on-line via zoom]. All of the talks and the posters are given by on-line, and participants can also join the workshop on-cite if they hope. (The number of on-site-participants is limited because of the social distancing rule. We can accept only 10 on-site-participants except LOC members. If more than 10 candidates desire to join the workshop in person, we will select the on-site-participants. Thank you for your understanding.)
This workshop is supported by the Collaborative Research Program of the Institute for Cosmic Ray Research, the University of Tokyo.
Topics
- Observation, theory and simulation of relativistic jet and accretion flow and accretion flow
- Physics of black hole magnetosphere
- Accretion from circumnuclear region
- Radio observation of compact object and relevant high-energy phenomena
- Magnetohydrodynamics, kinetic plasma physics, and radiative transfer around the compact objects
Invited speakers
- Yuzhu Cui (Sokendai/NAOJ/SJTU)
- Lei Huang (SHAO)
- Masatoshi Imanishi (NAOJ)
- Kyohei Kawaguchi (ICRR)
- Serguei S. Komissarov (Leeds U)
- Yosuke Mizuno (SJTU)
- Hiroki Okino (U of Tokyo/NAOJ)
- Bart Ripperda (Flatiron/Princeton U)
- Hyunwook Ro (Yonsei U/KASI)
- John Silverman (IPMU)
- Eie Sujin (U of Tokyo/NAOJ)
Registration
Abstract submission deadline: January 7, 2021
Registration deadline: January 31, 2021
Program
Feb. 7 (Mon.)
- 10:20 - 10:30
Opening Remark
Tomohisa Kawashima (ICRR)
Session 1 (10:30-12:10) Chair: Motoki Kino (Kogakuin U/NAOJ)
- 10:30 - 11:10
Yosuke Mizuno (TDLI)
"The Polarised Ring of the Supermassive Black Hole in M87: theoretical modeling" (Invited)
- 11:10 - 11:30
Yuh Tsunetoe (Kyoto U)
"Linear and Circular Polarization Images and the Jet-Disk Structure in M87"
- 11:30 - 11:50
Jongho Park (ASIAA)
"A revised view of the linear polarization in the sub parsec core of M87"
- 11:50 - 12:10
Masanori Nakamura (Hachinohe C)
"Magnetically Driven Jets from the Spinning Black Hole in BL Lac Objects"
- 12:10 - 13:30
Lunch
Session 2 (13:30-15:10) Chair: Masanori Nakamura (Hachinohe C)
- 13:30 - 14:10
Yuzhu Cui (TDLI)
"Probing the formation region of relativistic jet in nearby AGN M87 with the East Asian VLBI Network" (Invited)
- 14:10 - 14:30
Tomohisa Kawashima (ICRR)
"Time dependent and multi-wavelength radiative properties of accretion flows and relativistic jets"
- 14:30 - 14:50
Yohei Kawazura (Tohoku U)
"Ion vs. electron heating in magnetorotational turbulence"
- 14:50 - 15:10
Rittick Roy (Fudan U)
"Superradiance evolution of black hole shadows revisited"
- 15:10 - 15:20
Coffee break
- 15:20 - 16:30
Poster session w/ flash talk Chair: Kyohei Kawaguchi (ICRR)
Session 3 (16:30-17:50) Chair: Yuzhu Cui (TDLI)
- 16:30 - 17:10
Hyunwook Ro (Yonsei U/KASI)
"Spectral Analysis of Parsec-Scale Jet in M87: Observational Constraint on the Magnetic field Strengths in the Jet" (Invited)
- 17:10 - 17:30
Mieko Takamura (U Tokyo/NAOJ)
"Measurement of Faraday rotation of Narrow Seyfert 1 galaxies using ultra-wide band VERA polarimetry"
- 17:30 - 17:50
Juan Carlos Algaba (U Malaya)
"Deep View of the Parsec Scale 43 GHz Polarization of Active Galactic Nuclei"
- 17:50 - 18:00
Coffee break
Session 4 (18:00-18:40) Chair: Kenji Toma (Tohoku U)
- 18:00- 18:40
Serguei Komissarov (U Leeds)
"Electrically charged black holes and the Blandford-Znajek mechanism" (Invited)
Feb. 8 (Tue.)
Session 5 (9:30-10:50) Chair: Kenji Toma (Tohoku U)
- 9:30 - 10:10
Bart Ripperda (Princeton U)
"Black Hole Flares: ejection of accreted magnetic flux through 3D plasmoid-mediated reconnection" (Invited)
- 10:10 - 10:30
Shigeo S. Kimura (Tohoku U)
"Multi-wavelength emission from magnetically arrested disks"
- 10:30 - 10:50
Shota Kisaka (Hiroshima U)
"The response of black hole spark gaps to external changes: A production mechanism of rapid TeV flares?"
- 10:50 - 11:10
Coffee break
Session 6 (11:10-12:10) Chair: Yosuke Mizuno (TDLI)
- 11:10 - 11:50
Lei Huang (SHAO)
"Toward a full MHD jet -- kinetics and application to M87" (Invited)
- 11:50 - 12:10
Taiki Ogihara (U Tsukuba)
"Constructing synthetic images of general relativistic magnetohydrodynamic models for AGN jets by applying the general relativistic radiative transfer code RAIKOU"
- 12:10 - 12:15
Photo session
- 12:15 - 13:30
Lunch
Session 7 (13:30-15:30) Chair: Tomohisa KAWASHIMA (ICRR)
- 13:30 - 14:10
Masatoshi Imanishi (NAOJ)
"ALMA high-spatial-resolution dense molecular line observations of the nearby well-studied AGN NGC 1068: Implications for mass-accretion mechanism onto supermassive black holes in AGNs" (Invited)
- 14:10 - 14:30
Motoki Kino (Kogakuin U/NAOJ)
"Discovery of spectacular collision between the jet and a gas cloud at the center of Perseus cluster"
- 14:30 - 15:10
John Silverman (IPMU)
"Dual supermassive black holes from the HSC-SSP" (Invited)
- 15:10 - 15:30
Ignacio Botella Lasaga(Kyoto U)
"Study on the outflow impact of SMBH seed at high-z through radiation hydrodynamic (RHD) simulations"
- 15:30 - 15:40
Coffee break
- 15:40 - 16:40
Poster session Chair: Tomohisa Kawashima (ICRR)
Session 8 (16:40-18:00) Chair: Shuta J Tanaka (Aoyamagakuin U)
- 16:40 - 17:20
Kyohei Kawaguchi (ICRR)
"Multi-messenger astrophysics of neutron star binary mergers" (Invited)
- 17:20 - 17:40
Kota Hayashi (YITP)
"General-relativistic neutrino-radiation magnetohydrodynamics simulations of black hole-neutron star merger for seconds"
- 17:40 - 18:00
Susumu Inoue (Bunkyo U/RIKEN)
"Neutrino, gamma-ray and radio emission from winds and tori in active galactic nuclei"
Feb. 9 (Wed.)
Session 9 (9:30-10:50) Chair: Kazuhiro Hada (NAOJ)
- 9:30 - 10:10
Hiroki Okino (U Tokyo/NAOJ)
"The collimation structure of the 3C 273 jet with multi-frequency VLBI observations" (Invited)
- 10:10 - 10:30
Junghwan Oh (Sejong U)
"A persistent double nuclear structure in 3C 84"
- 10:30 - 10:50
Jeffrey Adam Hodgson (Sejong U)
"Evidence for magnetic reconnection in 3C 84?"
- 10:50 - 11:10
Coffee break
Session 10 (11:10-12:10) Chair: Hyunwook Ro (Yonsei U/KASI)
- 11:10 - 11:50
Sujin Eie (U Tokyo/NAOJ)
"Multifrequency view of energetic pulsar emissions: prospects of multi-telescope observations for magnetars/fast radio bursts" (Invited)
- 11:50 - 12:10
Minchul Kam (SNU)
"Using the Crab nebula as a polarization angle calibrator for the KVN"
SOC: T. Kawashima (ICRR, Tokyo, chair), M. Kino (Kogakuin/NAOJ), K. Hada (NAOJ Mizusawa VLBI), K. Toma (Tohoku), K. Kawaguchi (ICRR, Tokyo)
LOC: K. Kawaguchi (chair), T. Kinugawa, K. Asano (ICRR, Tokyo)
Recent VLBI observation, e.g., the Event Horizon Telescope (EHT) provided us powerful evidence of the presence of supermassive black holes and strongly magnetized plasma in the vicinity of the black holes in M87*. In lower frequency bands, the East Asia VLBI Network (EAVN) and KaVA are also getting the unprecedented results of jets and accretion flows in M87, Sgr A*, and other AGNs. From a broader perspective, the co-evolution of the black holes and their host galaxies through the merger of binary black holes and mass accretion is important in the cosmological context and has been intensively studied. Related to these themes, the mass supply mechanism from the circumnuclear region is absolutely essential and recent observation shows some evidence of them. This will potentially enable us to understand its connection to the horizon scale phenomena. Motivated by recent progress of these observations, theory and simulations of magnetohydrodynamics, kinetic plasma physics, and radiative transfer of accretion flows and relativistic jets have been also carried out vigorously and new perceptions have been attained.
The workshop will bring researchers working on observation and theory/simulations to discuss our present understanding and key questions towards the future of the spacetime of black holes, the physics of accretion flow, jets, winds, and the related high energy phenomena around compact objects.
Due to the situation of the COVID-19, the workshop will be a hybrid-type [in person (for domestic people) and on-line via zoom]. All of the talks and the posters are given by on-line, and participants can also join the workshop on-cite if they hope. (The number of on-site-participants is limited because of the social distancing rule. We can accept only 10 on-site-participants except LOC members. If more than 10 candidates desire to join the workshop in person, we will select the on-site-participants. Thank you for your understanding.)
This workshop is supported by the Collaborative Research Program of the Institute for Cosmic Ray Research, the University of Tokyo.
- Observation, theory and simulation of relativistic jet and accretion flow and accretion flow
- Physics of black hole magnetosphere
- Accretion from circumnuclear region
- Radio observation of compact object and relevant high-energy phenomena
- Magnetohydrodynamics, kinetic plasma physics, and radiative transfer around the compact objects
- Yuzhu Cui (Sokendai/NAOJ/SJTU)
- Lei Huang (SHAO)
- Masatoshi Imanishi (NAOJ)
- Kyohei Kawaguchi (ICRR)
- Serguei S. Komissarov (Leeds U)
- Yosuke Mizuno (SJTU)
- Hiroki Okino (U of Tokyo/NAOJ)
- Bart Ripperda (Flatiron/Princeton U)
- Hyunwook Ro (Yonsei U/KASI)
- John Silverman (IPMU)
- Eie Sujin (U of Tokyo/NAOJ)
Abstract submission deadline: January 7, 2021
Registration deadline: January 31, 2021
Feb. 7 (Mon.)
- 10:20 - 10:30
Opening Remark
Tomohisa Kawashima (ICRR)
-
Session 1 (10:30-12:10) Chair: Motoki Kino (Kogakuin U/NAOJ)
- 10:30 - 11:10
Yosuke Mizuno (TDLI)
"The Polarised Ring of the Supermassive Black Hole in M87: theoretical modeling" (Invited)
- 11:10 - 11:30
Yuh Tsunetoe (Kyoto U)
"Linear and Circular Polarization Images and the Jet-Disk Structure in M87"
- 11:30 - 11:50
Jongho Park (ASIAA)
"A revised view of the linear polarization in the sub parsec core of M87"
- 11:50 - 12:10
Masanori Nakamura (Hachinohe C)
"Magnetically Driven Jets from the Spinning Black Hole in BL Lac Objects"
- 12:10 - 13:30
Lunch
-
Session 2 (13:30-15:10) Chair: Masanori Nakamura (Hachinohe C)
- 13:30 - 14:10
Yuzhu Cui (TDLI)
"Probing the formation region of relativistic jet in nearby AGN M87 with the East Asian VLBI Network" (Invited)
- 14:10 - 14:30
Tomohisa Kawashima (ICRR)
"Time dependent and multi-wavelength radiative properties of accretion flows and relativistic jets"
- 14:30 - 14:50
Yohei Kawazura (Tohoku U)
"Ion vs. electron heating in magnetorotational turbulence"
- 14:50 - 15:10
Rittick Roy (Fudan U)
"Superradiance evolution of black hole shadows revisited"
- 15:10 - 15:20
Coffee break
- 15:20 - 16:30
Poster session w/ flash talk Chair: Kyohei Kawaguchi (ICRR)
-
Session 3 (16:30-17:50) Chair: Yuzhu Cui (TDLI)
- 16:30 - 17:10
Hyunwook Ro (Yonsei U/KASI)
"Spectral Analysis of Parsec-Scale Jet in M87: Observational Constraint on the Magnetic field Strengths in the Jet" (Invited)
- 17:10 - 17:30
Mieko Takamura (U Tokyo/NAOJ)
"Measurement of Faraday rotation of Narrow Seyfert 1 galaxies using ultra-wide band VERA polarimetry"
- 17:30 - 17:50
Juan Carlos Algaba (U Malaya)
"Deep View of the Parsec Scale 43 GHz Polarization of Active Galactic Nuclei"
- 17:50 - 18:00
Coffee break
-
Session 4 (18:00-18:40) Chair: Kenji Toma (Tohoku U)
- 18:00- 18:40
Serguei Komissarov (U Leeds)
"Electrically charged black holes and the Blandford-Znajek mechanism" (Invited)
Feb. 8 (Tue.)
-
Session 5 (9:30-10:50) Chair: Kenji Toma (Tohoku U)
- 9:30 - 10:10
Bart Ripperda (Princeton U)
"Black Hole Flares: ejection of accreted magnetic flux through 3D plasmoid-mediated reconnection" (Invited)
- 10:10 - 10:30
Shigeo S. Kimura (Tohoku U)
"Multi-wavelength emission from magnetically arrested disks"
- 10:30 - 10:50
Shota Kisaka (Hiroshima U)
"The response of black hole spark gaps to external changes: A production mechanism of rapid TeV flares?"
- 10:50 - 11:10
Coffee break
-
Session 6 (11:10-12:10) Chair: Yosuke Mizuno (TDLI)
- 11:10 - 11:50
Lei Huang (SHAO)
"Toward a full MHD jet -- kinetics and application to M87" (Invited)
- 11:50 - 12:10
Taiki Ogihara (U Tsukuba)
"Constructing synthetic images of general relativistic magnetohydrodynamic models for AGN jets by applying the general relativistic radiative transfer code RAIKOU"
- 12:10 - 12:15
Photo session
- 12:15 - 13:30
Lunch
-
Session 7 (13:30-15:30) Chair: Tomohisa KAWASHIMA (ICRR)
- 13:30 - 14:10
Masatoshi Imanishi (NAOJ)
"ALMA high-spatial-resolution dense molecular line observations of the nearby well-studied AGN NGC 1068: Implications for mass-accretion mechanism onto supermassive black holes in AGNs" (Invited)
- 14:10 - 14:30
Motoki Kino (Kogakuin U/NAOJ)
"Discovery of spectacular collision between the jet and a gas cloud at the center of Perseus cluster"
- 14:30 - 15:10
John Silverman (IPMU)
"Dual supermassive black holes from the HSC-SSP" (Invited)
- 15:10 - 15:30
Ignacio Botella Lasaga(Kyoto U)
"Study on the outflow impact of SMBH seed at high-z through radiation hydrodynamic (RHD) simulations"
- 15:30 - 15:40
Coffee break
- 15:40 - 16:40
Poster session Chair: Tomohisa Kawashima (ICRR)
-
Session 8 (16:40-18:00) Chair: Shuta J Tanaka (Aoyamagakuin U)
- 16:40 - 17:20
Kyohei Kawaguchi (ICRR)
"Multi-messenger astrophysics of neutron star binary mergers" (Invited)
- 17:20 - 17:40
Kota Hayashi (YITP)
"General-relativistic neutrino-radiation magnetohydrodynamics simulations of black hole-neutron star merger for seconds"
- 17:40 - 18:00
Susumu Inoue (Bunkyo U/RIKEN)
"Neutrino, gamma-ray and radio emission from winds and tori in active galactic nuclei"
Feb. 9 (Wed.)
-
Session 9 (9:30-10:50) Chair: Kazuhiro Hada (NAOJ)
- 9:30 - 10:10
Hiroki Okino (U Tokyo/NAOJ)
"The collimation structure of the 3C 273 jet with multi-frequency VLBI observations" (Invited)
- 10:10 - 10:30
Junghwan Oh (Sejong U)
"A persistent double nuclear structure in 3C 84"
- 10:30 - 10:50
Jeffrey Adam Hodgson (Sejong U)
"Evidence for magnetic reconnection in 3C 84?"
- 10:50 - 11:10
Coffee break
-
Session 10 (11:10-12:10) Chair: Hyunwook Ro (Yonsei U/KASI)
- 11:10 - 11:50
Sujin Eie (U Tokyo/NAOJ)
"Multifrequency view of energetic pulsar emissions: prospects of multi-telescope observations for magnetars/fast radio bursts" (Invited)
- 11:50 - 12:10
Minchul Kam (SNU)
"Using the Crab nebula as a polarization angle calibrator for the KVN"
LOC: K. Kawaguchi (chair), T. Kinugawa, K. Asano (ICRR, Tokyo)