Faculty Information

Specialization and related fields

Business career

Belonging society

Official position and committee in Univ.

Research topic, funded research, and department laboratory expense

Book and thesis

Lecturer and lecture

（Last updated : 2024-08-04 22:47:51）

YAMAZAKI Ryo
Department Aoyama Gakuin University Department of Physical Sciences, College of Science and Engineering

Position Professor

■ Specialization and related fields

Astrophysics, Plasma physics, Astronomy, Cosmic-ray astrophysics (Key Word：Astrophysics, Astronomy, Laboratory astrophysics)

■ Business career

1.	2010/04～2018/03	Aoyama Gakuin University College of Science and Engineering Department of Physics and Mathematics Associate Professor
2.	2018/04～2021/03	Aoyama Gakuin University College of Science and Engineering Department of Physics and Mathematics Professor
3.	2021/04～	Aoyama Gakuin University College of Science and Engineering Department of Physical Sciences Professor

■ Belonging society

2018/08

Association of Asia-Pacific Physical Societies

■ Official position and committee in Univ.

1.	2017/04/01～2019/03/31	Aoyama Gakuin University Curriculum Coordinator
2.	2019/04/01～2021/03/31	Aoyama Gakuin University Curriculum Coordinator
3.	2021/04/01～2023/03/31	Aoyama Gakuin University Curriculum Coordinator

■ Research topic, funded research, and department laboratory expense

1.	2000/04～	Theoretical research of high-energy astrophysical phenomena (Key Word : )
2.	2000/04～	Origin of cosmic gamma-ray bursts (Key Word : )
3.	2000/04～	Acceleration mechanism of high-energy cosmic rays (Key Word : )

■ Book and thesis

1.	Article	Observation of Gravitational Waves from the Coalescence of a ~ 2.5-4.5 M_sun Compact Object and a Neutron Star The Astrophysical Journal Letters 970,pp.L34 (Collaboration) 2024/07
2.	Article	A Joint Fermi-GBM and Swift-BAT Analysis of Gravitational-wave Candidates from the Third Gravitational-wave Observing Run The Astrophysical Journal 964,pp.149 (Collaboration) 2024/04
3.	Article	GRB 080710: A narrow, structured jet showing a late, achromatic peak in the optical and infrared afterglow? Journal of High Energy Astrophysics 41,pp.1-12 (Collaboration) 2024/03
4.	Article	On the influence of shock-cloud interactions on the nonthermal X-ray emission from the supernova remnant RCW 86 Publications of the Astronomical Society of Japan 75,pp.1344-1352 (Collaboration) 2023/12
5.	Article	GWTC-3: Compact Binary Coalescences Observed by LIGO and Virgo during the Second Part of the Third Observing Run Physical Review X 13(4),pp.041039 (Collaboration) 2023/10
6.	Article	Disk Wind-Driven Expanding Radio-emitting Shell in Tidal Disruption Events The Astrophysical Journal 954,pp.5 (Collaboration) 2023/09
7.	Article	Synchrotron self-compton emission in the two-component jet model for gamma-ray bursts Journal of High Energy Astrophysics 37,pp.51-61 (Collaboration) 2023/03
8.	Article	Two-component jet model for multi-wavelength afterglow emission of the extremely energetic burst GRB 221009A Monthly Notices of the Royal Astronomical Society: Letters 522,pp.L56-L60 (Collaboration) 2023/03
9.	Article	Detection of current-sheet and bipolar ion flows in a self-generated antiparallel magnetic field of laser-produced plasmas for magnetic reconnection research Physical Review E 106,pp.055207 (Collaboration) 2022/11
10.	Article	High-power laser experiment on developing supercritical shock propagating in homogeneously magnetized plasma of ambient gas origin Physical Review E 106,pp.025205 (Collaboration) 2022/08
11.	Article	Gamma-Ray Diagnostics of r-process Nucleosynthesis in the Remnants of Galactic Binary Neutron-star Mergers The Astrophysical Journal 933,pp.111 (Collaboration) 2022/07
12.	Article	The Gamma-Ray Emission from the Supernova Remnant RX J1713.7-3946 Interacting with Two-phase Medium The Astrophysical Journal 933,pp.126 (Collaboration) 2022/07
13.	Article	Direct observations of pure electron outflow in magnetic reconnection Scientific Reports 12,pp.10921 (Collaboration) 2022/06
14.	Article	First joint observation by the underground gravitational-wave detector KAGRA with GEO 600 Progress of Theoretical and Experimental Physics 2022(6),pp.063F01 (Collaboration) 2022/06
15.	Article	Search for Gravitational Waves Associated with Gamma-Ray Bursts Detected by Fermi and Swift during the LIGO-Virgo Run O3b The Astrophysical Journal 928,pp.186 (Collaboration) 2022/04
16.	Article	High-power laser experiment forming a supercritical collisionless shock in a magnetized uniform plasma at rest Physical Review E 105,pp.025203 (Collaboration) 2022/02
17.	Article	Observational Constraints on the Maximum Energies of Accelerated Particles in Supernova Remnants: Low Maximum Energies and a Large Variety The Astrophysical Journal 924,pp.45 (Collaboration) 2022/01
18.	Article	Observation of Gravitational Waves from Two Neutron Star-Black Hole Coalescences The Astrophysical Journal Letters 915,pp.L5 (Collaboration) 2021/07
19.	Article	Off-axis jet scenario for early afterglow emission of low-luminosity gamma-ray burst GRB 190829A Monthly Notices of the Royal Astronomical Society 504,pp.5647-5655 (Collaboration) 2021/07
20.	Article	Overview of KAGRA: KAGRA science Progress of Theoretical and Experimental Physics 2021(5),pp.05A103 (Collaboration) 2021/05
21.	Article	Probing the star formation origin of gamma-rays from 3FHL J1907.0+0713 Monthly Notices of the Royal Astronomical Society 501,pp.4226-4237 (Collaboration) 2021/03
22.	Article	Vibration isolation systems for the beam splitter and signal recycling mirrors of the KAGRA gravitational wave detector Classical and Quantum Gravity 38,pp.065011 (Collaboration) 2021/03
23.	Article	Sensitivity of the Cherenkov Telescope Array for probing cosmology and fundamental physics with gamma-ray propagation Journal of Cosmology and Astroparticle Physics 02(2021),pp.048 (Collaboration) 2021/02
24.	Article	ALMA CO Observations of the Gamma-Ray Supernova Remnant RX J1713.7─3946: Discovery of Shocked Molecular Cloudlets and Filaments at 0.01 pc Scales The Astrophysical Journal Letters 904,pp.L24 (Collaboration) 2020/12
25.	Article	Collective Thomson scattering in non-equilibrium laser produced two-stream plasmas Physics of Plasmas 27,pp.103104 (Collaboration) 2020/10
26.	Article	Fast Particle Acceleration at Perpendicular Shocks with Uniform Upstream Magnetic Field and Strong Downstream Turbulence The Astrophysical Journal 897,pp.116 (Collaboration) 2020/07
27.	Article	Study on the escape timescale of high-energy particles from supernova remnants through thermal X-ray properties Publications of the Astronomical Society of Japan 72,pp.72 (Collaboration) 2020/07
28.	Article	Toward experimental observations of induced Compton scattering by high-power laser facilities Progress of Theoretical and Experimental Physics 2020(6),pp.063J01 (Collaboration) 2020/06
29.	Article	Less noticeable shallow decay phase in early X-ray afterglows of GeV/TeV-detected gamma-ray bursts Monthly Notices of the Royal Astronomical Society 494,pp.5259-5269 (Collaboration) 2020/04
30.	Article	Suzaku and Fermi view of the supernova remnant 3C 396 Monthly Notices of the Royal Astronomical Society 492,pp.1484-1491 (Collaboration) 2020/02
31.	Article	Mach number and plasma beta dependence of the ion temperature perpendicular to the external magnetic field in the transition region of perpendicular collisionless shocks AIP Advances 9,pp.125010 (Collaboration) 2019/12
32.	Article	Bright Gamma-Ray Flares Observed in GRB 131108A The Astrophysical Journal Letters 886,pp.L33 (Collaboration) 2019/11
33.	Article	Neutrino Emissions from Tidal Disruption Remnants The Astrophysical Journal 886,pp.114 (Collaboration) 2019/11
34.	Article	Weibel-mediated Shocks Propagating into Inhomogeneous Electron-Positron Plasmas The Astrophysical Journal Letters 886,pp.54 (Collaboration) 2019/11
35.	Article	A Reverse Shock in GRB 181201A The Astrophysical Journal 884,pp.121 (Collaboration) 2019/10
36.	Article	Anomalous plasma acceleration in colliding high-power laser-produced plasmas Physics of Plasmas 26,pp.090702 (Collaboration) 2019/10
37.	Article	Discovery of recombining plasma inside the extended gamma-ray supernova remnant HB9 Monthly Notices of the Royal Astronomical Society 489,pp.4300-4310 (Collaboration) 2019/09
38.	Article	Collective Thomson scattering measurements of electron feature using stimulated Brillouin scattering in laser-produced plasmas High Energy Density Physics 32,pp.82-88 (Collaboration) 2019/07
39.	Article	Exponentially Decaying Extended Emissions Following Short Gamma-Ray Bursts with a Possible Luminosity–E-folding Time Correlation The Astrophysical Journal 877,pp.2 (Collaboration) 2019/06
40.	Article	Full particle-in-cell simulation of the interaction between two plasmas for laboratory experiments on the generation of magnetized collisionless shocks with high-power lasers Physics of Plasmas 26,pp.032303 (Collaboration) 2019/03
41.	Article	A Suzaku X-ray study of the mixed-morphology supernova remnant Kes 69 and searching for its gamma-ray counterpart Monthly Notices of the Royal Astronomical Society, Volume 481,pp.1416-14251 (Collaboration) 2018/11
42.	Article	Discovery of recombining plasma from the faintest GeV supernova remnant HB 21 and a possible scenario for cosmic rays escaping from supernova remnant shocks Publications of the Astronomical Society of Japan 70(4),pp.75 (Collaboration) 2018/08
43.	Article	Pulsar Wind Nebulae inside Supernova Remnants as Cosmic-Ray PeVatrons Monthly Notices of the Royal Astronomical Society 478,pp.926-931 (Collaboration) 2018/07
44.	Article	Prompt emission from the counter jet of a short gamma-ray burst Progress of Theoretical and Experimental Physics 2018(3),pp.033E01 (Collaboration) 2018/03
45.	Article	The Transition from Young to Middle-aged Supernova Remnants: Thermal and Nonthermal Aspects of SNR N132D The Astrophysical Journal 854,pp.71 (Collaboration) 2018/02
46.	Article	Polarized Balmer line emission from supernova remnant shock waves efficiently accelerating cosmic rays Monthly Notices of the Royal Astronomical Society 473,pp.1394-1406 (Collaboration) 2018/01
47.	Article	Recombining Plasma and Gamma-Ray Emission in the Mixed-morphology Supernova Remnant 3C 400.2 The Astrophysical Journal 842,pp.22 (Collaboration) 2017/06
48.	Article	Prospects for Cherenkov Telescope Array Observations of the young Supernova Remnant RX J1713.7-3946 The Astrophysical Journal 840,pp.74 (Collaboration) 2017/05
49.	Article	Optical-infrared flares and radio afterglows by Jovian planets inspiraling into their host stars Monthly Notices of the Royal Astronomical Society 466,pp.1421-1427 (Collaboration) 2017/04
50.	Article	Suzaku analysis of the Supernova Remnant G306.3-0.9 and the gamma-ray view of its neighborhood Monthly Notices of the Royal Astronomical Society 466,pp.3434-3441 (Collaboration) 2017/04
51.	Article	Inverse Compton Emission from Cosmic-Ray Precursor in RX J1713.7-3946 Journal of High Energy Astrophysics 13,pp.17-21 (Collaboration) 2017/03
52.	Article	Electromagnetic afterglows associated with gamma-ray emission coincident with binary black hole merger event GW150914 Progress of Theoretical and Experimental Physics pp.051E01 (Collaboration) 2016/05
53.	Article	Toward the Generation of Magnetized Collisionless Shocks with High-Power Lasers Plasma and Fusion Research 11,pp.3401031 (Collaboration) 2016/03
54.	Article	Optical inverse Compton emission from clusters of galaxies Monthly Notices of the Royal Astronomical Society pp.1990-1998 (Collaboration) 2015/10
55.	Article	Extremely Soft X-Ray Flash as the Indicator of Off-axis Orphan GRB Afterglow The Astrophysical Journal 806,pp.222 (Collaboration) 2015/06
56.	Article	On cosmic-ray production efficiency at supernova remnant shocks propagating into realistic diffuse interstellar medium The Astrophysical Journal 803,pp.98 (Collaboration) 2015/04
57.	Article	Electron acceleration with improved Stochastic Differential Equation method: Cutoff shape of electron distribution in test-particle limit Journal of High Energy Astrophysics 5,pp.1-8 (Collaboration) 2015/03
58.	Article	Synchrotron X-ray diagnostics of cutoff shape of nonthermal electron spectrum at young supernova remnants Research in Astronomy and Astrophysics pp.165 (Collaboration) 2014/02
59.	Article	A Critical Shock Mach Number for Particle Acceleration in the Absence of Pre-existing Cosmic Rays: M=sqrt{5} The Astrophysical Journal pp.125 (Collaboration) 2014/01
60.	Article	The Origin of Radially Aligned Magnetic Fields in Young Supernova Remnants The Astrophysical Journal Letters pp.L20 (Collaboration) 2013/08
61.	Article	Detection of the characteristic pion-decay signature in Supernova Remnants Science vol.339, 807 (Collaboration) 2013/02
62.	Article	Escape of Cosmic-Ray Electrons from Supernova Remnants Monthly Notices of the Royal Astronomical Society vol. 427, 91 (Collaboration) 2012/11
63.	Article	Prospects for Detecting Gamma-ray Bursts at Very High Energies with the Cerenkov Telescope Array Monthly Notices of the Royal Astronomical Society vol.425, 514 (Collaboration) 2012/09
64.	Article	Revised production cross-section of gamma-rays in p-p collisions with LHC data for the study of TeV gamma-ray astronomy Astroparticle Physics vol.36, 83 (Collaboration) 2012/08
65.	Article	Microinstabilities at perpendicular collisionless shocks: A comparison of full particle simulations with different ion to electron mass ratio Physics of Plasmas vol.19, 042109 (Collaboration) 2012/04
66.	Article	Toward Understanding the Cosmic-ray Acceleration at Young Supernova Remnants Interacting with Interstellar Clouds: Possible Applications to RX J1713.7-3946 The Astrophysical Journal vol.744, 71 (Collaboration) 2012/01
67.	Article	Observations of the Young Supernova Remnant RX J1713.7-3946 with the Fermi LAT The Astrophysical Journal vol.734, 28 (Collaboration) 2011/06
68.	Article	The Radiative X-ray and Gamma-ray Efficiencies of Rotation Powered Pulsars The Astrophysical Journal vol. 727, 131 (Collaboration) 2011/02
69.	Article	Gamma-rays from molecular clouds illuminated by cosmic rays escaping from interacting supernova remnants Monthly Notices of the Royal Astronomical Society vol.410, 1577 (Collaboration) 2011/01
70.	Article	Two-Step Acceleration Model of Cosmic Rays at Middle-aged SNRs: Universality in Secondary Shocks The Astrophysical Journal Letters vol. 723, L108-L112 (Collaboration) 2010/11
71.	Article	The Relation between Post-Shock Cosmic-Ray Pressure and Cosmic-Ray Escape from Non-relativistic Shocks The Astrophysical Journal vol. 722, 1727-1734 (Collaboration) 2010/10
72.	Article	Gamma-ray Emission from the Shell of Supernova Remnant W44 Revealed by the Fermi LAT Science vol. 327, 1103-1106 (Collaboration) 2010/02
73.	Article	A limit on the variation of the speed of light arising from quantum gravity effects Nature vol. 462, 331-334 (Collaboration) 2009/11
74.	Article	Measuring the cosmic ray acceleration efficiency of a supernova remnant Science vol. 325, 719-722 (Collaboration) 2009/08
75.	Article	Fermi observations of high-energy gamma-ray emission from GRB 080916C Science vol. 323, 1688-1693 (Collaboration) 2009/03
76.	Article	Prior Emission Model for X-ray Plateau Phase of GRB Afterglows The Astrophysical Journal Letters vol. 690, L118-L121 (Single) 2009/01
77.	Article	TeV Gamma-Rays from Old Supernova Remnants Monthly Notices of the Royal Astronomical Society vol. 371, 1975-1982 (Collaboration) 2006/10
78.	Article	A Unified Model of Short and Long GRBs, X-Ray Rich GRBs, and X-Ray Flashes The Astrophysical Journal Letters vol. 607, L103-L106 (Collaboration) 2004/06
79.	Article	X-ray Flashes from Off-Axis Gamma-Ray Bursts The Astrophysical Journal Letters vol. 571, L31-L35 (Collaboration) 2002/05
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■ Lecturer and lecture

1.	2021/07/06	A possible link between normal long GRBs and a short GRB 200826A (Online)
2.	2021/04/19	Formation of a Supercritical Collisionless Shock in a Magnetized Uniform Plasma at Rest (Online/Osaka)
3.	2019/11/19	Shock Waves in Astrophysical and Laboratory Plasmas (Kuching, Malaysia)
4.	2019/09/25	Collisionless shocks in astrophysical and laboratory plasmas (Osaka, Japan)
5.	2019/07/18	Toward the generation of magnetized collisionless shocks with high-energy lasers (Wako, Japan)
6.	2019/03/08	Counter-jet emissions from short GRBs similar to binary neutron star merger event GW 170817/GRB 170817A (Toyama University)
7.	2019/03/04	Counter-jet emissions from short GRBs similar to binary neutron star merger event GW 170817/GRB 170817A (Kyushu University)
8.	2017/09/29	Toward the Unified Model of Supernova Remnants (名古屋大学)
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