Name: CosPA 2026 / ACGRG 13
Start: 2026-07-05T16:30:00+12:00
End: 2026-07-09T17:00:00+12:00
Location: University of Canterbury

CosPA 2026 / ACGRG 13

from Sunday, 5 July 2026 (16:30) to Thursday, 9 July 2026 (17:00)

Monday, 29 June 2026
Tuesday, 30 June 2026
Wednesday, 1 July 2026
Thursday, 2 July 2026
Friday, 3 July 2026
Saturday, 4 July 2026
Sunday, 5 July 2026

16:30 Welcome Reception

16:30 - 18:00
Room: University of Canterbury Club

Monday, 6 July 2026

08:30 Welcome Tea/Coffee

08:30 - 08:45
Room: Rātā / Engineering Core Building

08:45 Opening

08:45 - 09:00
Room: Room E8
09:00 Plenary talks: Session 1
Session 1
09:00 - 10:10
Room: Room E8
Contributions

09:00 Gravitational waves and scattering from black holes with positive cosmological constant - Volker Schlue (University of Melbourne)

09:35 GWTC-5.0: Observations from the second part of the fourth LIGO-Virgo-KAGRA observing run - Jade Powell (Swinburne University of Technology)
10:10 Morning Tea/Coffee
Morning Tea/Coffee
10:10 - 10:40
Room: Rātā / Engineering Core Building
10:40 Plenary talks: Session 2
Session 2
10:40 - 11:50
Room: Room E8
Contributions

10:40 Searching for Dark Matter with LHAASO - Kenny Chun Yu Ng (The Chinese University of Hong Kong)

11:15 Inferring w(z) in an inhomogeneous universe - Krzysztof Bolejko (University of Tasmania)
11:50 Poster Sparklers
11:50 - 12:30
Room: Room E8
Contributions

11:55 Probing the Equation of State of Dense Matter in Neutron Stars - Bao-Jun Cai (Fudan University)

11:57 Primordial universe with vector hair on small-scale - Chong-Bin Chen (Nanchang University)

12:00 The Atmospheric Muon Flux from Sub-TeV to PeV Energies with IceCube - Pascal Gutjahr (Adelaide University)

12:02 A fresh look at boundary terms in Einstein-Hilbert gravity via an initial value variational principle - Songmin Ha (Korea university)

12:05 Perturbative unitarity bounds on field-space curvature in de Sitter spacetime: purity vs scattering amplitude - Masataka Ishikawa (the University of Tokyo)

12:07 Spectral Signatures of Multi-Mediator Astrophysical Neutrino Self-Interactions at Ultra-High Energies - Ayushi Kaushik (SHIV NADAR INSTITUTION OF EMINECE DEEMED TO BE UNIVERSITY, GREATER NOIDA, INDIA)

12:10 Interacting Phantom Dark Energy after DESI DR2 BAO Observations: New Constraints and Tension Alleviation - Zhuochao LI (the Chinese University of Hong Kong)

12:12 Quasinormal modes of scalar, electromagnetic, and gravitational perturbations in slowly rotating Kalb-Ramond black holes - Wentao Liu (Lanzhou University)

12:15 Polarization Modes of Gravitational Waves - Yu-Xiao Liu (Lanzhou University)

12:17 Charged multi-sheet wormhole solutions - Yusuke Makita (Nagoya University)

12:20 Magnetic Fields around Kerr Black Holes: Particle Acceleration and Jet Formation - Myeong-Gu Park (Kyungpook National University)

12:22 Application of fusion-view and optimization convolutional neural network in glitch classification - Qun-Ying Xie (Lanzhou University)

12:25 Trapped Surface as a Cosmic Censor - Daisuke Yoshida (Nagoya University)

12:27 Effects of scalar dark matter on the merger of binary black holes - Yu-Peng Zhang (Lanzhou University)
12:30 Lunch
Lunch
12:30 - 13:30
Room: Rātā / Engineering Core Building
13:30 Parallel sessions: Cosmology (ACGRG/NZ Gravity Student Talks)
Cosmology (ACGRG/NZ Gravity Student Talks)
13:30 - 15:10
Room: Room E5
Contributions

13:30 Numerical solutions of the Euler equations on fixed Kasner-type backgrounds with coordinate-dependent fluid-regimes - Joshua Ritchie (University of Otago)

13:50 Constraining Inflation Models with Spinning Voids - GEONWOO KANG (Seoul National University)

14:10 Big Rip and inhomogeneities: can the Galaxy survive the Big Rip? - Gawain Simpson (University of Tasmania)

14:30 Estimating the Cosmic Structure Backreaction: a Buchert’s Averaging Approach on Halo Induced Curvature - Che Li (The Chinese University of Hong Kong)

14:50 Modelling the Local Universe with $\Lambda$-Szekeres Models - Morag Hills (University of Canterbury)
Parallel sessions: Dark matter - theory
Dark matter - theory
13:30 - 15:10
Room: Room E6
Contributions

13:30 Core-collapse supernova simulations coupled with dark photons - Kanji Mori (Keio University)

13:50 Spherically Symmetric Fluid Simulations of Black Hole Accretion in Self-Interacting Dark Matter Halos - Tan Chen (Beijing Normal University)

14:10 TeV-scale unification of light dark matter and neutrino mass - Shu-Yu Ho (Academia Sinica)

14:30 Stone-Skipping Orbits: Resonant Dynamics in ULDM Solitons - Yourong Frank Wang (University of Göttingen)

14:50 Testing ultralight dark matter with pulsar timing arrays - Chris Gordon (University of Canterbury)
Parallel sessions: Gravitational waves
Gravitational waves
13:30 - 15:10
Room: Room E7
Contributions

13:30 Careless Whispers: Sub-threshold post-merger gravitational waves constrain the hot nuclear equation of state - Fiona Panther (University of Western Australia)

13:50 Probing ultra-dense matter with gravitational waves from binary neutron star coalescences - Luca Baiotti (The University of Osaka)

14:10 Neural Posterior Estimation for BBH Foreground Subtraction in 3G SGWB Searches - Zhenwei Lyu (Leicester International Institute, Dalian University of Technology)

14:30 Dynamics of a binary system around SMBH and gravitational waves - Kei-ichi MAEDA (Waseda University)

14:50 Efficiency of current gravitational wave microlensing searches using isolated compact object lenses - Uddeepta Deka
15:10 Afternoon Tea/Coffee
Afternoon Tea/Coffee
15:10 - 15:40
Room: Rātā / Engineering Core Building
15:40 Parallel sessions: Gravity - foundational aspects
Gravity - foundational aspects
15:40 - 16:40
Room: Room E7
Contributions

15:40 Black hole superradiance of interacting multi-fields - Jun Zhang (International Centre for Theoretical Physics Asia-Pacific)

16:00 A New Definition of Horndeski Theory and the Possibility of Multiple Scalar Field Extensions - Tomoki KATAYAMA

16:20 Application of Solving Inverse Scattering Problem in Holographic Bulk Reconstruction - Run-Qiu Yang (Tianjin University)
Parallel sessions: Late universe cosmology
Late universe cosmology
15:40 - 16:40
Room: Room E5
Contributions

15:40 Directional variations of cosmological parameters from the Planck CMB data - Ming Chung Chu (The Chinese University of Hong Kong (HK))

16:00 Gauge-invariant perturbation cosmology - Malcolm Anderson (Universiti Brunei Darussalam)

16:20 Measuring backreaction and spatial curvature in the local Universe - Pierre Mourier (University of Canterbury)
Parallel sessions: Neutrino physics
Neutrino physics
15:40 - 16:40
Room: Room E6
Contributions

15:40 Status and Prospects of the RELICS Experiment - Jingqiang Ye (The Chinese University of Hong Kong, Shenzhen)

16:00 Direct Neutrino Mass Measurements: Status, Recent Advances, and Future Prospects - Khushbakht Habib (Karlsruhe Institute of Technology)

16:20 Galactic Neutrino Source Searches with IceCube in the Multi-Messenger Era - Ankur Sharma (University of Canterbury)
16:40 Poster session

16:40 - 18:10
Room: Rātā / Engineering Core Building

17:00 ASGRG Biennial General Meeting

17:00 - 17:45
Room: Room E6
19:30 Public lecture: Scanning the Darkest Skies (Richard Easther, U Auckland)
Scanning the Darkest Skies (Richard Easther, U Auckland)
19:30 - 20:30
Room: Great Hall
Contributions

19:30 Scanning the Darkest Skies - Richard Easther (The University of Auckland)
Tuesday, 7 July 2026
09:00 Plenary talks: Session 3
Session 3
09:00 - 10:45
Room: Room E8
Contributions

09:00 Bustling Universe Radio Survey Telescope in Taiwan (BURSTT): Status and Prospect - Jiwoo Nam (National Taiwan University)

09:35 New Measurements in the Era of Precision Neutrino Physics - Nicole Bell (The University of Melbourne)

10:10 Timescape versus ΛCDM — precision tests of emerging spatial curvature - David Wiltshire (University of Canterbury)
10:45 Morning Tea/Coffee
Morning Tea/Coffee
10:45 - 11:15
Room: Rātā / Engineering Core Building
11:15 Plenary talks: Session 4
Session 4
11:15 - 12:30
Room: Room E8
Contributions

11:15 PandaX: Deep Underground Xenon Observatory in China - Jianglai Liu (Shanghai Jiao Tong University)

11:50 Status and perspectives of KAGRA - Hirotaka Takahashi (Tokyo City University)
12:30 Lunch
Lunch
12:30 - 13:30
Room: Rātā / Engineering Core Building

13:30 Conference Excursion: Christchurch Gondola
Christchurch Gondola
13:30 - 17:30
Room: Departure 1:30pm from Rātā / Engineering Core Building
Wednesday, 8 July 2026
09:00 Plenary talks: Session 5
Session 5
09:00 - 10:10
Room: Room E8
Contributions

09:00 Black Holes Trapped by Ghosts - Bin Wang (Shanghai Jiao Tong University / Yangzhou University)

09:35 PeVatrons: The Most Extreme Particle Accelerators in our Galaxy - Sabrina Einecke (University of Adelaide)
10:10 Morning Tea/Coffee
Morning Tea/Coffee
10:10 - 10:40
Room: Rātā / Engineering Core Building
10:40 Plenary talks: Session 6
Session 6
10:40 - 11:55
Room: Room E8
Contributions

10:40 Inflation — my personal perspective - Misao Sasaki (Asia Pacific Center for Theoretical Physics)

11:15 Rethinking Gravity: From Torsion and Nonmetricity to Black Holes and Cosmology - Sebastian Bahamonde (Institute for Basic Science, Daejon)
11:55 Group photo

11:55 - 12:10
Room: Rātā / Engineering Core Building

12:10 APCosPA Council Meeting (over lunch)

12:10 - 13:30
Room: Room 119

Lunch
Lunch
12:10 - 13:30
Room: Rātā / Engineering Core Building
13:30 Parallel sessions: Dark matter - detection
Dark matter - detection
13:30 - 15:10
Room: Room E6
Contributions

13:30 Searching for ultralight dark matter from terrestrial magnetic fields - Kimihiro Nomura (Kyoto University)

13:50 WimPyDD and WimPyC: Python codes exploiting the complementarity between WIMP direct detection and indirect detection - Sunghyun Kang (CQUeST, Sogang University)

14:10 First Bubbles in the SBC-LAr10 Detector - Russell Neilson (Drexel University)

14:30 Development of A Novel Compton Camera for MeV Gamma Ray Measurement - Mengjiao Xiao (Shanghai Jiao Tong University)

14:50 The SABRE South Experiment at the Stawell Underground Physics Laboratory - Daniel Marcantonio (University of Melbourne)
Parallel sessions: Gravitational waves (ACGRG/NZ Gravity Student Talks)
Gravitational waves (ACGRG/NZ Gravity Student Talks)
13:30 - 15:10
Room: Room E5
Contributions

13:30 Standard Siren Cosmology in the Era of the Next-generation Gravitational Wave Detectors - SHANGJIE JIN (University of Western Australia)

13:50 PBH Flybys of SMBHs: Say Hello, Wave Goodbye - Laura Burn (University of Auckland)

14:10 The Hunt for the next Galactic supernova - Tarin Eccleston (The University of Auckland)

14:30 Massive black holes in binary solitons - Russell Boey (University of Auckland)

14:50 Light, Gravity and Coffee (Astrophysical Implications of Non-linear Gravitational and Electromagnetic Scattering) - Jesse Satherley (University of Canterbury)
Parallel sessions: Gravity - foundational aspects
Gravity - foundational aspects
13:30 - 15:10
Room: Room E7
Contributions

13:30 Pseudospectrum and (in)stability of black hole total transmission mode - Yu-Sen Zhou (University of Science and Technology of China)

13:50 The Teukolski equation for the Baines-Visser spacetime - Joshua Baines (The University of Melbourne)

14:10 Black hole interior and complexity of homogeneous holographic solids under shear strain - Wei-Jia Li

14:30 A photon cloud induced from an axion cloud - Zi-Yu Tang

14:50 Gravity with torsion and matter–antimatter asymmetry - Nikodem Poplawski (University of New Haven)
15:10 Afternoon Tea/Coffee
Afternoon Tea/Coffee
15:10 - 15:40
Room: Rātā / Engineering Core Building
15:40 Parallel sessions: Astroparticle and relativistic astrophysics
Astroparticle and relativistic astrophysics
15:40 - 17:20
Room: Room E6
Contributions

15:40 Magnetic field in low–mass X–ray binaries and Dark Matter signals - Stefano Scopel (CQUeST, Sogang University)

16:00 UHECRs Beyond the GZK Limit as Magnetic Monopole Candidates - Michael Padgett (Vanderbilt University)

16:20 Testing the Leptogenesis from Observable Gravitational Waves - Yongcheng Wu (Nanjing Normal University)

16:40 Search for galactic gamma-ray hotspots using IceTop and IceCube - Sebastian Vergara Carrasco (University of Canterbury (UC))
Parallel sessions: Early universe cosmology
Early universe cosmology
15:40 - 17:20
Room: Room E7
Contributions

15:40 Non-Markovian effects in stochastic inflation - Diego Cruces Mateo (Institute of Theoretical Physics - Chinese Academy of Sciences (ITP,CAS))

16:00 On the Fate of Inflaton after Inflation: Fragmentation, Oscillon Formation and Decay - Swagat Saurav Mishra (Centre for Theoretical Physics of the Universe, Institute for Basic Science)

16:20 A Unified Axion Framework for Dark Sectors and Early Structure Formation - Cindy Gulis (Department of Astronomy & Astrophysics, The Pennsylvania State University)

16:40 Impact of light sterile neutrino on cosmic structure formation - Rui HU (Chinese University of Hong Kong)

17:00 Probing Small-Scale Primordial Power Spectrum with Cosmological Simulations - Tsang Keung Chan (the Chinese University of Hong Kong)
Parallel sessions: Mathematical Relativity (including ACGRG/NZ Gravity Student Talks)
Mathematical Relativity (including ACGRG/NZ Gravity Student Talks)
15:40 - 17:20
Room: Room E5
Contributions

15:40 From Black Holes to Stars: Rigidity Beyond Einstein Gravity - Nitesh Dubey (Indian Institute of Astrophysics, Bengaluru)

16:00 Asymptotic Generation of Kerr Geometry from Schwarzschild via BMS Supertranslations - Nihar Ranjan Ghosh

16:20 Internal instability in charged black holes - Travers Bloemsaat

16:40 Numerical Implementation of the Friedrich-Nagy Initial Boundary Value Problem - Areeba Merriam (University of Canterbury)

17:00 Gravitational wave simulations from past to future null infinity - Chris Stevens (University of Canterbury)
18:00 Conference Dinner

18:00 - 22:00
Room: Dr Bk Ngau Tī Kōuka Room
Thursday, 9 July 2026
09:30 Plenary talks: Session 7
Session 7
09:30 - 10:45
Room: Room E8
Contributions

09:30 On Dark Energy Reconstruction and Interpretation - Arman Shafieloo (Korea Astronomy and Space Science Institute)

10:05 Dark matter and gravitational wave signals from a phase transition in the early universe - Torsten Bringmann (University of Oslo (NO))
10:45 Morning Tea/Coffee
Morning Tea/Coffee
10:45 - 11:15
Room: Rātā / Engineering Core Building
11:15 Plenary talks: Session 8
Session 8
11:15 - 12:30
Room: Room E8
Contributions

11:15 Gravitational Wave Astronomy with the TianQin Space Observatory - Yi-Ming Hu (Sun Yat-sen University)

11:50 The Present and Future of Neutrino Astronomy - Naoko Kurahashi Neilson (Drexel University, USA)
12:30 Lunch
Lunch
12:30 - 13:30
Room: Rātā / Engineering Core Building
13:30 Parallel sessions: Black holes - Mathematical aspects
Black holes - Mathematical aspects
13:30 - 15:10
Room: Room E5
Contributions

13:30 The (non-)uniqueness of multipole moments beyond general relativity - Arthur Suvorov (University of Alicante)

13:50 Kerr black holes as circular polarizers - De-Chang Dai (National Dong Hwa University)

14:10 The hidden symmetries of slowly rotating black holes - Finnian Gray (Macquarie University)

14:30 How Time-Evolving Photon Polarization Encodes Kerr Ringdown - Yehui Hou (Tsung-Dao Lee Institute)

14:50 Physical horizons versus mathematical horizons - Matt Visser (Victoria University of Wellington)
Parallel sessions: Gravity - foundational aspects
Gravity - foundational aspects
13:30 - 15:10
Room: Room E7
Contributions

13:30 Gravity-Induced Entanglement in an infinite square well - Fu-Wen Shu (Nanchang University)

13:50 Hunting for the observational signature of universal horizon and Lorentz-violation effects - Chao Zhang (China University of Petroleum-Beijing)

14:10 Inside Black Holes, Singularity to Complementarity - Dingfang Zeng (Beijing University of Technology)

14:30 Topological perspective on bulk boundary thermodynamic equivalence - Si-Jiang Yang (Hainan University)
Parallel sessions: Observational cosmology
Observational cosmology
13:30 - 15:10
Room: Room E6
Contributions

13:30 Mapping the nanohertz gravitational-wave sky to reveal the origin of the stochastic background - Eric Thrane (Monash University)

13:50 Do Cosmic String Segments Emit Gravitational Waves? - Akifumi Chitose (Institute for Cosmic Ray Research, University of Tokyo)

14:10 The Effect of Dark Energy on the Void-Galaxy Perpendicular Alignments - Jounghun Lee

14:30 Testing universal pressure profile models on Sunyaev-Zel'dovich galaxy cluster data - Denis Tramonte (Xi'an Jiaotong-Liverpool University)

14:50 Muztagh-Ata 1.93-meter Synergy Telescope and lensing time delay - Bin Hu (Beijing Normal University)
15:10 Closing Remarks and Award Presentations

15:10 - 15:40
Room: Room E8

15:40 Afternoon Tea/Coffee
Afternoon Tea/Coffee
15:40 - 16:10
Room: Rātā / Engineering Core Building