Yongming Liang
Illustrative cosmic web

EXTRAGALACTIC ASTRONOMY

Across the
cosmic web.

Galaxies. Black holes. Intergalactic gas.
Exploring the connections that shape our Universe.

Discover the researchPublications
More about me

ABOUT ME

Reading the Universe
through its connections.

I study how galaxies and supermassive black holes evolve within the cosmic web, and how they interact with the gas around and between galaxies.

At ICRR, The University of Tokyo, I combine wide-field imaging, spectroscopy, and multiwavelength observations to explore these relationships in the distant Universe. I received my Ph.D. from SOKENDAI in 2022, working at NAOJ.

Curriculum vitae
01 / RESEARCH

A connected Universe

From the gas between galaxies to the black holes at their centers, I study how environment shapes the distant Universe.

02 / CURRICULUM VITAE

A path through astronomy

Read my CVDownload CV PDF

Appointments

2025-10 — present
ICRR FellowICRR, The University of Tokyo
2024-10 — 2025-09
Project ResearcherNational Astronomical Observatory of Japan
2022-10 — 2024-09
Project ResearcherICRR, The University of Tokyo

Education

2017 — 2022
Ph.D. · AstronomySOKENDAI / NAOJ
2013 — 2017
Bachelor's degree · AstronomyUniversity of Science and Technology of China

Research funding

JSPS KAKENHI 24K17084 · Principal Investigator · Early-Career Scientists · 2024–2027

JSPS KAKENHI 25H00663 · Co-Investigator · Scientific Research (A) · 2025–2030

Chandra Cycle 27 · Science PI · Associated U.S. observing grant
US$61,320 approved for U.S. investigators. U.S. administrative PI: Martin Elvis (CfA).

Professional service & membership

  • Journal referee: Astronomy & Astrophysics (A&A), The Astrophysical Journal (ApJ), and Nature Astronomy.
  • JCMT Time Allocation Committee, September 2023–November 2025.
  • International Astronomical Union member, since June 2024.
  • Astronomical Society of Japan member, since October 2017.
03 / PUBLICATIONS

Papers & preprints

All publications

34 refereed articles · 4 preprints

2026

  1. Preprint

    Subaru meets JWST: A Direct Measurement of Lyα Escape Fraction at z ≃ 6.2 with Dual Narrow-Band Imaging

    Shimizu, Shunta et al.

    arXiv:2607.08264

    ADSDOIarXiv

  2. JWST COSMOS-3D: Spectroscopic census and luminosity function of [O III] emitters at 6.75 < z < 9.05 in COSMOS

    Meyer, Romain A. et al.

    A&A, 712, A16

    ADSDOIarXiv
  3. Preprint

    Prime Focus Spectrograph on the Subaru Telescope: Overview of Science Operations

    Tanaka, Masayuki et al.

    arXiv:2606.14012

    ADSDOIarXiv

  4. Subaru High-z Exploration of Low-Luminosity Quasars (SHELLQs) — XXV. Large-scale environments of low-luminosity quasars at z ∼ 6 traced by Lyα emitters

    Arita, Junya et al.

    MNRAS, 549, stag784

    ADSDOIarXiv

  5. Cosmic Himalayas in CROCODILE: Probing the Extreme Quasar Overdensities by Count-in-cells Analysis and Nearest-neighbor Distribution

    Kuwayama, Yuto et al.

    ApJ, 1001, 172

    ADSDOIarXiv
  6. Preprint

    A Python-Based Peeling Framework for Radio Interferometry: Application to uGMRT 650MHz Imaging

    Peng, Hao et al.

    arXiv:2603.10758

    ADSDOIarXiv

  7. Deeper detection limits in astronomical imaging using self-supervised spatiotemporal denoising

    Guo, Yuduo et al.

    Science, 392, eady9404

    ADSDOIarXiv

2025

  1. Preprint

    Little red dot variability over a century reveals black hole envelope via a giant Einstein cross

    Zhang, Zijian et al.

    arXiv:2512.05180

    ADSDOIarXiv

  2. RIDEN pilot survey: broad-band selection of candidate quasars with extended Lyman-α nebulae using CLAUDS–HSC-SSP–DUNES² joint data

    Shimakawa, Rhythm et al.

    MNRAS, 540, 3565–3582

    ADSDOIarXiv

  3. Cosmic Himalayas: The Highest Quasar Density Peak Identified in a 10,000 deg² Sky with Spatial Discrepancies between Galaxies, Quasars, and IGM H I

    Liang, Yongming et al.

    ApJ, 986, 60

    ADSDOIarXiv

  4. SILVERRUSH. XIV. Lyα Luminosity Functions and Angular Correlation Functions from ∼20,000 Lyα Emitters at z ∼ 2.2–7.3 from up to 24 deg² HSC-SSP and CHORUS Surveys: Linking the Postreionization Epoch to the Heart of Reionization

    Umeda, Hiroya et al.

    ApJS, 277, 37

    ADSDOIarXiv

  5. The Physical Origin of Extreme Emission Line Galaxies at High Redshifts: Strong [O III] Emission Lines Produced by Obscured Active Galactic Nuclei

    Zhu, Chenghao et al.

    ApJ, 982, 27

    ADSDOIarXiv

  6. MAMMOTH-Subaru. IV. Large Scale Structure and Clustering Analysis of Lyα Emitters and Lyα Blobs at z = 2.2–2.3

    Zhang, Haibin et al.

    ApJ, 981, 70

    ADSDOIarXiv

  7. Predicting Lyα emission from distant galaxies with neural network architecture

    Yoshioka, Takehiro et al.

    MNRAS, 536, 3386–3400

    ADSDOIarXiv

2024

  1. MAMMOTH-Subaru. II. Diverse Populations of Circumgalactic Lyα Nebulae at Cosmic Noon

    Li, Mingyu et al.

    ApJS, 275, 27

    ADSDOIarXiv

  2. Mining for Protoclusters at z ∼ 4 from Photometric Data Sets with Deep Learning

    Takeda, Yoshihiro et al.

    ApJ, 977, 81

    ADSDOIarXiv

  3. Lyα Imaging around the Hyperluminous Dust-obscured Quasar W2246–0526 at z = 4.6

    Luo, Yibin et al.

    ApJ, 972, 51

    ADSDOIarXiv

  4. MAMMOTH-Subaru. V. Effects of Cosmic Variance on Lyα Luminosity Functions at z = 2.2–2.3

    Ma, Ke et al.

    ApJ, 961, 102

    ADSDOIarXiv

  5. MAMMOTH-Subaru. III. Lyα Halo Identified by Stacking ∼3300 Lyα Emitters at z = 2.2–2.3

    Zhang, Haibin et al.

    ApJ, 961, 63

    ADSDOIarXiv

2023

  1. SILVERRUSH. XIII. A Catalog of 20,567 Lyα Emitters at z = 2–7 Identified in the Full-depth Data of the Subaru/HSC-SSP and CHORUS Surveys

    Kikuta, Satoshi et al.

    ApJS, 268, 24

    ADSDOIarXiv

  2. Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). XVIII. The Dark Matter Halo Mass of Quasars at z ∼ 6

    Arita, Junya et al.

    ApJ, 954, 210

    ADSDOIarXiv

  3. COSMOS2020: Discovery of a Protocluster of Massive Quiescent Galaxies at z = 2.77

    Ito, Kei et al.

    ApJL, 945, L9

    ADSDOIarXiv

2022

  1. The physical origin for spatially large scatter of IGM opacity at the end of reionization: The IGM Lyα opacity-galaxy density relation

    Ishimoto, Rikako et al.

    MNRAS, 515, 5914–5926

    ADSDOIarXiv

  2. Third data release of the Hyper Suprime-Cam Subaru Strategic Program

    Aihara, Hiroaki et al.

    PASJ, 74, 247–272

    ADSDOIarXiv

  3. CHORUS. IV. Mapping the Spatially Inhomogeneous Cosmic Reionization with Subaru HSC

    Yoshioka, Takehiro et al.

    ApJ, 927, 32

    ADSDOIarXiv

  4. A Wide and Deep Exploration of Radio Galaxies with Subaru HSC (WERGS). VI. Distant Filamentary Structures Pointed Out by High-z Radio Galaxies at z ∼ 4

    Uchiyama, Hisakazu et al.

    ApJ, 926, 76

    ADSDOIarXiv

2021

  1. Interrelation of the Environment of Lyα Emitters and Massive Galaxies at 2 < z < 4.5

    Ito, Kei et al.

    ApJ, 916, 35

    ADSDOIarXiv

  2. Probing Feedback via IGM tomography and the Lyα Forest with Subaru PFS, TMT/ELT, and JWST

    Nagamine, Kentaro et al.

    ApJ, 914, 66

    ADSDOIarXiv

  3. SILVERRUSH X: Machine Learning-aided Selection of 9318 LAEs at z = 2.2, 3.3, 4.9, 5.7, 6.6, and 7.0 from the HSC SSP and CHORUS Survey Data

    Ono, Yoshiaki et al.

    ApJ, 911, 78

    ADSDOIarXiv

  4. Evidence for GN-z11 as a luminous galaxy at redshift 10.957

    Jiang, Linhua et al.

    Nature Astronomy, 5, 256–261

    ADSDOIarXiv

  5. Statistical Correlation between the Distribution of Lyα Emitters and Intergalactic Medium H I at z ∼ 2.2 Mapped by the Subaru/Hyper Suprime-Cam

    Liang, Yongming et al.

    ApJ, 907, 3

    ADSDOIarXiv

2020

  1. CHORUS. I. Cosmic HydrOgen Reionization Unveiled with Subaru: Overview

    Inoue, Akio K. et al.

    PASJ, 72, 101

    ADSDOIarXiv

  2. Faint Quasars Live in the Same Number Density Environments as Lyman Break Galaxies at z ∼ 4

    Uchiyama, Hisakazu et al.

    ApJ, 905, 125

    ADSDOIarXiv

  3. Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). XI. Proximity Zone Analysis for Faint Quasar Spectra at z ∼ 6

    Ishimoto, Rikako et al.

    ApJ, 903, 60

    ADSDOIarXiv

  4. The UV Luminosity Function of Protocluster Galaxies at z ∼ 4: The Bright-end Excess and the Enhanced Star Formation Rate Density

    Ito, Kei et al.

    ApJ, 899, 5

    ADSDOIarXiv

2019

  1. Second data release of the Hyper Suprime-Cam Subaru Strategic Program

    Aihara, Hiroaki et al.

    PASJ, 71, 114

    ADSDOIarXiv

  2. The Brightest UV-selected Galaxies in Protoclusters at z ∼ 4: Ancestors of Brightest Cluster Galaxies?

    Ito, Kei et al.

    ApJ, 878, 68

    ADSDOIarXiv

  3. Suppression of Low-mass Galaxy Formation around Quasars at z ∼ 2–3

    Uchiyama, Hisakazu et al.

    ApJ, 870, 45

    ADSDOIarXiv

8 years · 38 papers & preprints

04 / TALKS

Talks & posters

All talks & posters

58 presentations · 2018–2026

2026

  1. Poster / flash talk

    From Cold Filaments to Hot Nodes: Protocluster Assembly Pathways at Cosmic Noon with Roman

    Shifting Landscapes in Astrophysics: New Frontiers to Explore with Roman · Caltech · Pasadena, USA

    Event details
  2. Talk

    Large-scale Structures at Cosmic Noon Mapped by HSC-Niji, Roman, and ULTIMATE-Subaru

    HSC-MB Workshop IV · Nagoya University, Japan

  3. Talk

    The Cosmic Himalayas: A Record Quasar Concentration at Cosmic Noon Bridging AGNs, Galaxies, and IGM

    28th Guoshoujing Symposium on Galaxies and Cosmology · Haikou, China

  4. Talk

    The Cosmic Himalayas: A Record Quasar Concentration at Cosmic Noon Bridging AGNs, Galaxies, and IGM

    Asia-Pacific Regional IAU Meeting 2026 · Hong Kong

  5. Talk

    Strangulation of Massive Galaxies at Cosmic Noon: A Hint from 3D IGM Tomography

    DLA Celebration

  6. Talk

    Cartography at the Cosmic Extremes: Mapping the 100 cMpc-scale Cosmic Himalayas at z=2.2

    Final SUPER-IRNET Workshop · Nakanoshima Center · University of Osaka, Japan

  7. Poster / flash talk

    Cosmic Himalayas: A Record Quasar Concentration at Cosmic Noon Bridging AGNs, Galaxies, and IGM

    JWST Tokyo Conference 2026 · Tokyo, Japan

  8. Seminar

    The Cosmic Himalayas: The Highest QSO Density Peak at Cosmic Noon Bridging AGNs, Galaxies, and IGM

    Nanjing University seminar · Nanjing, China

  9. Seminar

    The Cosmic Himalayas: An Extreme Quasar Concentration at Cosmic Noon Bridging AGNs, Galaxies, and Cosmic Web

    Anhui University of Science and Technology seminar · Huainan, China

    Event details
  10. Seminar

    The Cosmic Himalayas: An Extreme Quasar Concentration at Cosmic Noon Bridging AGNs, Galaxies, and Cosmic Web

    TDLI seminar · Shanghai Jiao Tong University · Shanghai, China

    Event details

2025

  1. TalkPresented remotely

    The Cosmic Himalayas: The Highest QSO Density Peak at Cosmic Noon Bridging AGNs, Galaxies, and IGM

    The Baryon Cycle from Reionization to Cosmic Noon · Puerto Varas, Chile

  2. Seminar

    The Cosmic Himalayas: An Extreme Quasar Concentration at Cosmic Noon Bridging AGNs, Galaxies, and IGM

    Tsukuba Space Forum · University of Tsukuba, Japan

  3. Talk

    The Cosmic Himalayas: The Highest QSO Density Peak at Cosmic Noon Bridging AGNs, Galaxies, and IGM

    Subaru Users Meeting 2025 · NAOJ · Mitaka, Japan

  4. Talk

    Strangulation of Massive Galaxies at Cosmic Noon: A Hint from 3D IGM Tomography

    11th Galaxy Evolution Workshop · Nagoya University, Japan

  5. Talk

    Galaxy–IGM Interplay at Cosmic Noon: From Fields to Extremes

    Tohoku Summer Camp 2025 · Appi Kogen · Iwate, Japan

  6. Invited talk

    The Cosmic Himalayas: The Highest QSO Density Peak at Cosmic Noon Bridging AGNs, Galaxies, and IGM

    HSC-AGN telecon · Online

  7. Talk

    Cosmic Cartography at the Cosmic Extremes: Mapping the 100 Mpc-scale Cosmic Himalayas at Cosmic Noon with Roman

    Cosmic Cartography with Roman · STScI · Baltimore, USA

  8. Flash talk

    Cosmic Himalayas: A Bridge Between Small and Large Scales at Cosmic Noon

    Cosmic Ecosystem · Perimeter Institute · Waterloo, Canada

  9. Invited talk

    Cosmic Himalayas: The Highest QSO Density Peak at Cosmic Noon Bridging AGNs, Galaxies, and IGM

    NAOJ Advisory Committee for Research and Management · NAOJ · Mitaka, Japan

  10. Flash talk

    Cosmic Himalayas: The Most Overdense Quasars and Their Origins Revealed by Galaxy Mergers

    Dancing in the Dark: When Galaxies Shape Galaxies · Sexten, Italy

  11. Poster

    Cosmic Himalayas: Hints of Massive Galaxy Formation in the Most Overdense Quasars at z≈2

    IAU Symposium: Massive Galaxies across the Universe · Naples, Italy

  12. Talk

    Cosmic Himalayas: A Bridge between Small and Large Scales at Cosmic Noon

    Galaxy Formation + AGORA in Asia 2025 · University of Osaka, Japan

  13. TalkPresented remotely

    Cosmic Himalayas: The Highest QSO Density Peak as a Testbed for Dust, Star Formation, and AGN Feedback at Cosmic Noon

    PRIMA and the Future of Far-Infrared Science · Caltech · Pasadena, USA

  14. Invited tutorial

    PFS Pipeline Tutorial

    PFS AGN Town Meeting 2025 · NAOJ · Mitaka, Japan

  15. Talk

    SPR + ILR joint workshop

    NAOJ · Mitaka, Japan

  16. Poster / flash talk

    Preview of the Information Site for Subaru PFS Data Reduction Pipeline (DRP)

    Subaru Users Meeting 2024 · NAOJ · Mitaka, Japan

2024

  1. Poster / flash talk

    Cosmic Himalayas: The Highest Quasar Density Peak at Cosmic Noon in a 10,000 deg² Sky

    Evolution of Dust and Gas throughout Cosmic Time · Hiroshima, Japan

  2. Talk

    Galaxy–IGM Correlation at and beyond Cosmic Noon with HSC-MB

    2nd HSC Medium Band Workshop · Nagoya University, Japan

  3. Seminar

    USTC seminar

    Nagano, Japan

  4. Talk

    The Highest Quasar Density Peak at Cosmic Noon in a 10,000 deg² Sky

    International Leading Research (ILR) Workshop · Osaka University, Japan

  5. Talk

    Cosmic Himalayas: The Highest Quasar Density Peak at Cosmic Noon in a 10,000 deg² Sky

    Galaxy–IGM Workshop 2024 · Hirosaki University, Japan

  6. Talk

    Cosmic Himalayas: The Most Concentrated Quasars at Cosmic Noon

    10th Galaxy Evolution Workshop · ASIAA · Taipei

    Event details
  7. Talk

    Cosmic Himalayas: A Possible Synergy with SUPER-IRNET for Understanding the Densest Quasars at Cosmic Noon

    2nd SUPER-IRNET Workshop · Beppu, Japan

  8. Talk

    The Most Concentrated Quasars Revealed by Subaru HSC and PFS at z≈2

    PFS Satellite Workshop

  9. Talk

    The Most Concentrated Quasars Revealed by Subaru HSC and PFS at z≈2

    ASJ Spring Annual Meeting · The University of Tokyo · Hongo, Japan

2023

  1. Talk

    Galaxy–IGM Correlation at and beyond Cosmic Noon & Application of HSC-MB

    HSC Medium Band Workshop · Nagoya University, Japan

  2. Talk

    GOPIRA Symposium 2023

    NAOJ · Mitaka, Japan

  3. Seminar

    The Observational Instruments for Extragalactic Astronomy in Japan (and more…)

    USTC seminar · Yamanakako, Japan

  4. Talk

    The Most Extremely Concentrated Quasars at Cosmic Noon: Initial Insights from 3D IGM Tomography

    Galaxy–IGM Workshop 2023 · Act City · Hamamatsu, Japan

  5. Talk

    Correlation between LAEs and IGM H I at z≈2 Mapped by Subaru/HSC

    25th CAS Guoshoujing Symposium on Galaxies and Cosmology · Huangshan, China

  6. Talk

    MAMMOTH-Subaru at Cosmic Noon: LAEs and LABs in Dense IGM Regions

    PFS Galaxy Evolution Working Group Meeting · Kashiwa, Japan

  7. Talk

    MAMMOTH-Subaru Survey Detecting LAEs and LABs Traced by IGM/AGN at Cosmic Noon

    9th Galaxy Evolution Workshop · Kyoto University, Japan

  8. Talk

    Variation in LAE–IGM H I Correlation at z≈2 Mapped by Subaru/HSC

    Subaru Users Meeting 2022 · NAOJ · Mitaka, Japan

2022

  1. Talk

    Variation in LAE–IGM H I Correlation at z≈2 Mapped by Subaru/HSC

    Japan–France Galaxy Formation Workshop · The University of Tokyo · Hongo, Japan

  2. Talk

    Field Variation in LAE–IGM H I Correlation at z≈2 Mapped by Subaru/HSC

    ASJ Autumn Annual Meeting · Niigata University, Japan

  3. Talk

    Variation in LAE–IGM H I Correlation at z≈2 Mapped by Subaru/HSC

    Galaxy–IGM Workshop 2022 · Kushiro, Japan

  4. Talk

    Field Variation in LAE–IGM H I Correlation at Cosmic Noon Mapped by Subaru/HSC

    Cosmic Cartography 2022: Exploring the Cosmic Web and Large Scale Structure · Online · hosted by Kavli IPMU

  5. Talk

    Field Variation in LAE–IGM H I Correlation at Cosmic Noon Mapped by Subaru/HSC

    8th Galaxy Evolution Workshop · Online

2021

  1. Talk

    Galaxy–IGM Workshop 2021

    Online · hosted by the University of Tsukuba

2020

  1. Talk

    Correlation between LAE and IGM H I Distributions at z≈2 Based on Subaru/HSC

    Galaxy–IGM Workshop 2020 · Online

2019

  1. Poster / flash talk

    Correlation between Galaxies and IGM at z=2.2 Based on Subaru/HSC MAMMOTH Overdensities & SDSS/eBOSS Quasar Spectra

    Subaru Telescope 20th Anniversary · Waikoloa · Hawaii, USA

  2. Poster / flash talk

    Correlation between Galaxies and IGM at z=2.2 Based on SDSS/eBOSS Quasar Spectra & Subaru/HSC MAMMOTH Overdensities

    Cosmic Evolution of Quasars: From First Light to Local Relics · KIAA · Peking University · Beijing, China

  3. Talk

    Correlation between Galaxy and IGM H I at z≈2.2 Based on Subaru/HSC MAMMOTH Overdensities & SDSS/eBOSS Quasar Spectra

    ASJ Autumn Annual Meeting · Kumamoto University, Japan

  4. Talk

    Correlation between Galaxy and IGM at z=2.2 Based on MAMMOTH Overdensities Mapped by HSC

    6th Galaxy Evolution Workshop · Kavli IPMU · Kashiwa, Japan

  5. Talk

    Search for Massive LAE Overdensities Traced by IGM to Study Their Correlation at z≈2.2

    ASJ Spring Annual Meeting · Hosei University · Tokyo, Japan

2018

  1. Talk

    Search for Massive LAE Overdensities Traced by IGM to Study Their Correlation at z≈2.2

    IGM 2018: Revealing Cosmology and Reionization History with the Intergalactic Medium · Kavli IPMU · Kashiwa, Japan

  2. Poster / flash talk

    Search for the Most Massive Overdensities at z≈2.2 with Subaru HSC

    48th Summer School on Astronomy and Astrophysics · Toyohashi, Japan

  3. Poster / flash talk

    Search for the Most Massive Overdensities at z≈2.2 with Subaru HSC

    5th Galaxy Evolution Workshop · Ehime University · Matsuyama, Japan

9 years · 58 presentations

For seminar invitations or presentation materials, please get in touch.

05 / PROPOSALS

Observing time

Telescope time for PI-led projects and collaborations · 2018–2026

Recorded telescope time by facility and role
TelescopePICo-I / collaborator
Chandra340 ks120 ks
Subaru9 nights22 nights
Keck½ night8 nights
Magellan1 night2 nights
Blanco 4-m7 nights—
Hubble—2 orbits
JWST—161 h
Roman—1 Analysis program
JCMT61 h—
ALMA30 h31 h
NOEMA10 h—
VLA—9 h
MeerKAT—20 h
uGMRT—39 h
06 / NEWS & MEDIA

Beyond the paper

RESEARCH · 2026

Putting the Cosmic Himalayas in a cosmological context

Our CROCODILE simulation study investigates extreme quasar concentrations and their relationship to the underlying cosmic structure.

Read the paper
SPACE SCOOP · JULY 2025

The mysterious tale of eleven quasars

An accessible introduction to the Cosmic Himalayas and the surprising distribution of its quasars and galaxies.

Read the story
SUBARU TELESCOPE · JUNE 2025

Discovering the Cosmic Himalayas

The institutional announcement of our study of an exceptionally dense quasar concentration at cosmic noon.

English release 日本語