NOBUHIRO OKABE
Last Updated :2025/01/08
- Affiliations, Positions
- Graduate School of Advanced Science and Engineering, Associate Professor
- Web Site
- E-mail
- okabehiroshima-u.ac.jp
Basic Information
Academic Degrees
- Master of Science, TOHOKU UNIVERSITY
- Doctor of Science, TOHOKU UNIVERSITY
Research Fields
- Mathematical and physical sciences;Astronomy;Astronomy
Affiliated Academic Societies
- The Astronomical Society of Japan
Educational Activity
Course in Charge
- 2024, Undergraduate Education, Second Semester, Mathematics for Physics D
- 2024, Undergraduate Education, 4Term, Advanced Physics
- 2024, Undergraduate Education, First Semester, Special Study for Graduation A
- 2024, Undergraduate Education, Second Semester, Special Study for Graduation B
- 2024, Undergraduate Education, 1Term, Special Lectures in Physics(Python Programing)
- 2024, Graduate Education (Master's Program) , 1Term, Relativistic Cosmology
- 2024, Graduate Education (Master's Program) , First Semester, Exercise in Physics I
- 2024, Graduate Education (Master's Program) , Second Semester, Exercise in Physics II
- 2024, Graduate Education (Master's Program) , First Semester, Special Exsecise in Physics A
- 2024, Graduate Education (Master's Program) , Second Semester, Special Exsecise in Physics B
- 2024, Graduate Education (Master's Program) , Academic Year, Special Research in Physics
- 2024, Graduate Education (Doctoral Program) , Academic Year, Special Research in Physics
Research Activities
Academic Papers
- AGN number fraction in galaxy groups and clusters at z < 1.4 from the Subaru Hyper Suprime-Cam survey, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 75(6), 1246-1261, 20231209
- King Ghidorah Supercluster: Mapping the light and dark matter in a new supercluster at z=0.55 using the subaru hyper suprime-cam, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 519(1), L45-L50, 202302
- Diffuse radio source candidate in CIZA J1358.9-4750, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 75, S138-S153, 20230227
- Galaxy clusters at z similar to 1 imaged by ALMA with the Sunyaev-Zel'dovich effect, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 75(2), 311-337, 20230403
- The eROSITA Final Equatorial-Depth Survey (eFEDS) X-ray properties of Subaru's optically selected clusters, ASTRONOMY & ASTROPHYSICS, 669, 20230118
- XMM-Newton view of the shock heating in an early merging cluster, CIZA J1358.9-4750, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 75(1), 37-51, 20230206
- The stellar populations of quiescent ultra-diffuse galaxies from optical to mid-infrared spectral energy distribution fitting, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 517(2), 2231-2250, 20221018
- SDSS-IV MaNGA: Cannibalism Caught in the Act-On the Frequency of Occurrence of Multiple Cores in Brightest Cluster Galaxies, ASTROPHYSICAL JOURNAL, 933(1), 20220701
- The eROSITA Final Equatorial-Depth Survey (eFEDS) Optical confirmation, redshifts, and properties of the cluster and group catalog, ASTRONOMY & ASTROPHYSICS, 661, 20220518
- The eROSITA Final Equatorial-Depth Survey (eFEDS) X-ray observable-to-mass-and-redshift relations of galaxy clusters and groups with weak-lensing mass calibration from the Hyper Suprime-Cam Subaru Strategic Program survey, ASTRONOMY & ASTROPHYSICS, 661, 20220518
- The eROSITA Final Equatorial-Depth Survey (eFEDS) X-ray properties and scaling relations of galaxy clusters and groups, ASTRONOMY & ASTROPHYSICS, 661, 20220518
- The eROSITA Final Equatorial-Depth Survey (eFEDS) A complete census of X-ray properties of Subaru Hyper Suprime-Cam weak lensing shear-selected clusters in the eFEDS footprint, ASTRONOMY & ASTROPHYSICS, 661, 20220518
- The eROSITA Final Equatorial-Depth Survey (eFEDS) Catalog of galaxy clusters and groups, ASTRONOMY & ASTROPHYSICS, 661, 20220518
- Do blue galaxy-clusters have hot intracluster gas?, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 74(2), 398-406, 20220404
- Third data release of the Hyper Suprime-Cam Subaru Strategic Program, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 74(2), 247-272, 20220404
- HSC-XXL: Baryon budget of the 136 XXL groups and clusters, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 74(1), 175-208, 20220201
- Stacked phase-space density of galaxies around massive clusters: comparison of dynamical and lensing masses, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 506(3), 3385-3405, 202109
- Hundreds of weak lensing shear-selected clusters from the Hyper Suprime-Cam Subaru Strategic Program S19A data, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 73(4), 817-829, 202108
- The Cluster HEritage project with XMM-Newton: Mass Assembly and Thermodynamics at the Endpoint of structure formation: I. Programme overview, ASTRONOMY & ASTROPHYSICS, 650, 20210615
- Understanding X-ray and optical selection of galaxy clusters: a comparison of the XXL and CAMIRA cluster catalogues obtained in the common XXL-HSC SSP area, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 503(4), 5624-5637, 202106
- Signatures of large-scale cold fronts in the optically-selected merging cluster HSC J085024+001536, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 73(3), 584-595, 202106
- Active gas features in three HSC-SSP CAMIRA clusters revealed by high angular resolution analysis of MUSTANG-2 SZE and XXL X-ray observations, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 501(2), 1701-1732, 202102
- Discovery of a supercluster in the eROSITA Final Equatorial Depth Survey: X-ray properties, radio halo, and double relics, ASTRONOMY & ASTROPHYSICS, 647, 2021
- Shapley supercluster survey: mapping the dark matter distribution, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 497(1), 52-66, 202009
- An expanded catalogue of low surface brightness galaxies in the Coma cluster using Subaru/Suprime-Cam, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 496(3), 3182-3197, 202008
- XXL Survey groups and clusters in the Hyper Suprime-Cam Survey. Scaling relations between X-ray properties and weak lensing mass, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 492(3), 4528-4545, 202003
- X-ray properties of high-richness CAMIRA clusters in the Hyper Suprime-Cam Subaru Strategic Program field, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 72(1), 202002
- X-ray study of the double source plane gravitational lens system Eye of Horus observed with XMM-Newton, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 491(3), 3411-3418, 202001
- Weak-lensing Analysis of X-Ray-selected XXL Galaxy Groups and Clusters with Subaru HSC Data, ASTROPHYSICAL JOURNAL, 890(2), 2020
- Second data release of the Hyper Suprime-Cam Subaru Strategic Program, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 71(6), 201912
- Free-form GRALE reconstruction of Abell 2744: robustness of uncertainties against changes in lensing data, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 488(3), 3251-3261, 201909
- ★, Halo concentration, galaxy red fraction, and gas properties of optically defined merging clusters, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 71(4), 201908
- Detection of anti-correlation of hot and cold baryons in galaxy clusters, NATURE COMMUNICATIONS, 10, 20190702
- Weak-lensing Mass Calibration of ACTPol Sunyaev-Zel'dovich Clusters with the Hyper Suprime-Cam Survey, ASTROPHYSICAL JOURNAL, 875(1), 20190410
- LoCuSS: scaling relations between galaxy cluster mass, gas, and stellar content, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 484(1), 60-80, 201903
- The Galaxy Cluster Mass Scale and Its Impact on Cosmological Constraints from the Cluster Population, SPACE SCIENCE REVIEWS, 215(2), 201902
- Halo Concentrations and the Fundamental Plane of Galaxy Clusters, GALAXIES, 7(1), 20190102
- The Physics of Galaxy Cluster Outskirts, SPACE SCIENCE REVIEWS, 215(1), 201901
- Origins of ultradiffuse galaxies in the Coma cluster - II. Constraints from their stellar populations, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 479(4), 4891-4906, 201810
- Origins of ultradiffuse galaxies in the Coma cluster - I. Constraints from velocity phase space, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 479(3), 3308-3318, 201809
- A New Interpretation of the Mass-Temperature Relation and Mass Calibration of Galaxy Clusters Based on the Fundamental Plane, ASTROPHYSICAL JOURNAL, 863(1), 20180810
- Inside a Beehive: The Multiple Merging Processes in the Galaxy Cluster Abell 2142, ASTROPHYSICAL JOURNAL, 863(1), 20180810
- LoCuSS: The infall of X-ray groups on to massive clusters, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 477(4), 4931-4950, 201807
- ATCA 16 cm observation of CIZA J1358.9-4750: Implication of merger stage and constraint on non-thermal properties, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 70(3), 201806
- Discovery of a New Fundamental Plane Dictating Galaxy Cluster Evolution from Gravitational Lensing, ASTROPHYSICAL JOURNAL, 857(2), 20180420
- Source selection for cluster weak lensing measurements in the Hyper Suprime-Cam survey, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 70(2), 201803
- SDSS-IV MaNGA: Uncovering the Angular Momentum Content of Central and Satellite Early-type Galaxies, ASTROPHYSICAL JOURNAL, 852(1), 20180101
- The Hyper Suprime-Cam SSP Survey: Overview and survey design, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 70, 201801
- First data release of the Hyper Suprime-Cam Subaru Strategic Program, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 70, 2018
- An optically-selected cluster catalog at redshift 0.1 < z < 1.1 from the Hyper Suprime-Cam Subaru Strategic Program S16A data, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 70, 2018
- Multiwavelength study of X-ray luminous clusters in the Hyper Suprime-Cam Subaru Strategic Program S16A field, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 70, 2018
- The first-year shear catalog of the Subaru Hyper Suprime-Cam Subaru Strategic Program Survey, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 70, 2018
- Two- and three-dimensional wide-field weak lensing mass maps from the Hyper Suprime-Cam Subaru Strategic Program S16A data, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 70, 2018
- A large sample of shear-selected clusters from the Hyper Suprime-Cam Subaru Strategic Program S16A Wide field mass maps, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 70, 2018
- SDSS-IV MaNGA: Probing the Kinematic Morphology-Density Relation of Early-type Galaxies with MaNGA, ASTROPHYSICAL JOURNAL LETTERS, 851(2), 20171220
- The XXL survey: First results and future, ASTRONOMISCHE NACHRICHTEN, 338(2-3), 334-341, 2017
- Galaxy cluster luminosities and colours, and their dependence on cluster mass and merger state, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 472(3), 3246-3255, 2017
- LoCuSS: exploring the selection of faint blue background galaxies for cluster weak-lensing, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 463(4), 4004-4018, 201612
- ★, LoCuSS: weak-lensing mass calibration of galaxy clusters, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 461(4), 3794-3821, 20161001
- X-ray observations of a subhalo associated with the NGC 4839 group infalling toward the Coma cluster, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 68(5), 201610
- BUDHIES - III: the fate of HI and the quenching of galaxies in evolving environments, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 461(2), 1202-1221, 20160911
- Central mass profiles of the nearby cool-core galaxy clusters Hydra A and A478, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 456(4), 4475-4487, 20160311
- LoCuSS: Testing hydrostatic equilibrium in galaxy clusters, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 456(1), L74-L78, 20160211
- FRONTIER FIELDS: SUBARU WEAK-LENSING ANALYSIS OF THE MERGING GALAXY CLUSTER A2744, ASTROPHYSICAL JOURNAL, 817(1), 20160120
- LoCuSS: exploring the selection of faint blue background galaxies for cluster weak-lensing, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 463(4), 4004-4018, 2016
- Detection of universality of dark matter profile from Subaru weak lensing measurements of 50 massive clusters, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 67(6), 201512
- Radio relics tracing the projected mass distribution in CIZA J2242.8+5301, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 67(6), 201512
- Testing a generalized cubic Galileon gravity model with the Coma Cluster, JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 201510
- THREE-DIMENSIONAL MULTI-PROBE ANALYSIS OF THE GALAXY CLUSTER A1689, ASTROPHYSICAL JOURNAL, 806(2), 20150620
- LoCuSS: THE SLOW QUENCHING OF STAR FORMATION IN CLUSTER GALAXIES AND THE NEED FOR PRE-PROCESSING, ASTROPHYSICAL JOURNAL, 806(1), 20150610
- SUZAKU OBSERVATIONS OF SUBHALOS IN THE COMA CLUSTER, ASTROPHYSICAL JOURNAL, 806(1), 2015
- Shapley Supercluster Survey: Galaxy evolution from filaments to cluster cores, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 446(1), 803-822, 2015
- Can we use weak lensing to measure total mass profiles of galaxies on 20 kpc scales?, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 449(2), 2128-2143, 2015
- ★, Universal profiles of the intracluster medium from Suzaku X-ray and Subaru weak-lensing observations, Publications of the Astronomical Society of Japan, 66(5), 20140101
- LoCuSS: the near-infrared luminosity and weak-lensing mass scaling relation of galaxy clusters, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 443(4), 3309-3317, 2014
- ★, SUBARU WEAK-LENSING SURVEY OF DARK MATTER SUBHALOS IN THE COMA CLUSTER: SUBHALO MASS FUNCTION AND STATISTICAL PROPERTIES, ASTROPHYSICAL JOURNAL, 784(2), 2014
- Star formation in the massive cluster merger Abell 2744, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 442(1), 196-206, 2014
- SUZAKU OBSERVATIONS OF THE OUTSKIRTS OF A1835: DEVIATION FROM HYDROSTATIC EQUILIBRIUM, ASTROPHYSICAL JOURNAL, 766(2), 2013
- LoCuSS: THE MASS DENSITY PROFILE OF MASSIVE GALAXY CLUSTERS AT z=0.2, ASTROPHYSICAL JOURNAL LETTERS, 769(2), 2013
- Discovery of an Outstanding Disk in the cD Galaxy of the Hydra A Cluster, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 65(6), 2013
- Suzaku Observations of the Hydra A Cluster out to the Virial Radius, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 64(5), 2012
- LoCuSS: THE SUNYAEV-ZEL'DOVICH EFFECT AND WEAK-LENSING MASS SCALING RELATION, ASTROPHYSICAL JOURNAL, 754(2), 2012
- LoCuSS: A Dynamical Analysis of X-Ray Active Galactic Nuclei in Local Clusters, Astrophysical Journal, 754(2), id. 97, 2012
- LoCuSS: comparison of observed X-ray and lensing galaxy cluster scaling relations with simulations (vol 482, pg 451, 2008), ASTRONOMY & ASTROPHYSICS, 527, 2011
- Suzaku X-Ray Follow-Up Observation of Weak-Lensing-Detected Halos in the Field around ZwCl 0823.2+0425, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 63(2), 357-366, 2011
- Creation of cosmic structure in the complex galaxy cluster merger Abell 2744, Monthly Notices of the Royal Astronomical Societ, 417, 333-347, 2011
- Subaru weak-lensing study of A2163: bimodal mass structure, 741(2), 116, 2011
- ★, LoCuSS : Subaru Weak Lensing Study of 30 Galaxy Clusters, Publications of the Astronomical Society of Japan, 62(3), 811-870, 20100625
- The Mass Structure of the Galaxy Cluster Cl0024+1654 from a Full Lensing Analysis of Joint Subaru and ACS/NIC3 Observations, Astrophysical Journal, 714(2), 1470-1496-1470-1496, 201005
- SUZAKU OBSERVATION OF A1689: ANISOTROPIC TEMPERATURE AND ENTROPY DISTRIBUTIONS ASSOCIATED WITH THE LARGE-SCALE STRUCTURE, ASTROPHYSICAL JOURNAL, 714(1), 423-441, 2010
- LoCuSS: A COMPARISON OF CLUSTER MASS MEASUREMENTS FROM XMM-NEWTON AND SUBARU-TESTING DEVIATION FROM HYDROSTATIC EQUILIBRIUM AND NON-THERMAL PRESSURE SUPPORT, ASTROPHYSICAL JOURNAL, 711(2), 1033-1043, 2010
- WEAK-LENSING MASS MEASUREMENTS OF SUBSTRUCTURES IN COMA CLUSTER WITH SUBARU/SUPRIME-CAM, ASTROPHYSICAL JOURNAL, 713(1), 291-303, 2010
- Direct measurement of dark matter halo ellipticity from two-dimensional lensing shear maps of 25 massive clusters, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 405(4), 2215-2230, 2010
- LoCuSS: Probing galaxy transformation physics with Herschel, ASTRONOMY & ASTROPHYSICS, 518, 2010
- LoCuSS: CALIBRATING MASS-OBSERVABLE SCALING RELATIONS FOR CLUSTER COSMOLOGY WITH SUBARU WEAK-LENSING OBSERVATIONS, ASTROPHYSICAL JOURNAL, 721(1), 875-885, 2010
- LoCuSS: A Herschel view of obscured star formation in Abell 1835, Astronomy and Astrophysics, 518, L40, 2010
- LoCuSS: luminous infrared galaxies in the merging cluster Abell 1758 at z=0.28, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 396(3), 1297-1307, 2009
- Suzaku Observation of the Ophiuchus Galaxy Cluster : One of the Hottest Cool Core Clusters, Publications of the Astronomical Society of Japan, 60(5), 1133-1142, 20081025
- ★, Subaru Weak Lensing Study of Seven Merging Clusters : Distributions of Mass and Baryons, Publications of the Astronomical Society of Japan, 60(2), 345-375, 20080425
- High Metallicity of the X-Ray Gas Up to the Virial Radius of a Binary Cluster of Galaxies : Evidence of Galactic Superwinds at High-Redshift, Publications of the Astronomical Society of Japan, 60(1), S343-S349, 20080220
- LoCuSS: Comparison of observed X-ray and lensing galaxy cluster scaling relations with simulations, ASTRONOMY & ASTROPHYSICS, 482(2), 451-U51, 2008
- Magnetic field generation by the Weibel instability at temperature gradients in collisionless plasmas, Phys. Plasmas, 13(12), 122901-122901-6-122901-122901-6, 2006
- A direct method for measuring heat conductivity in intracluster medium, ASTROPHYSICAL JOURNAL, 625(2), 741-747, 2005
- Spontaneous generation of the magnetic field and suppression of the heat conduction in cold fronts, ASTROPHYSICAL JOURNAL, 599(2), 964-970, 2003
- LoCuSS: hydrostatic mass measurements of the high-LX cluster sample - cross-calibration of Chandra and XMM-Newton, Monthly Notices of the Royal Astronomical Society, 443(3), 2342-2360-2342-2360, 2014
- Ultra-diffuse galaxies in the perseus cluster: comparing galaxy properties with globular cluster system richness, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 510(1), 946-958, 202202
Publications such as books
- 2019/10/17, Clusters of Galaxies: Physics and Cosmology (Space Sciences Series of ISSI), Scholarly Book, Joint work, English, 978-9402417333
Awards
- 2013, PASJ Excellent Paper Award, the Publications of the Astronomical Society of Japan., LoCuSS: Subaru Weak Lensing Study of 30 Galaxy Clusters
- 2017/11/04, Phoenix Outstanding Researcher Award, Hiroshima Univ.
Social Activities
History as Peer Reviews of Academic Papers
- 2017, The astronomical herald, Editor
- 2018, The astronomical herald, Editor
- 2019, The astronomical herald, Editor
- 2020, The astronomical herald, Editor