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, July 5, 2026 (4:30 PM) to Thursday, July 9, 2026 (5:00 PM)

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

4:30 PM Welcome Reception

4:30 PM - 6:00 PM
Room: University of Canterbury Club

Monday, July 6, 2026

8:30 AM Welcome Tea/Coffee

8:30 AM - 8:45 AM
Room: Rātā / Engineering Core Building

8:45 AM Opening

8:45 AM - 9:00 AM
Room: Room E8
9:00 AM Plenary talks: Session 1
Session 1
9:00 AM - 10:10 AM
Room: Room E8
Contributions

9:00 AM Gravitational waves and scattering from black holes with positive cosmological constant - Volker Schlue (University of Melbourne)

9:35 AM GWTC-5.0: Observations from the second part of the fourth LIGO-Virgo-KAGRA observing run - Jade Powell (Swinburne University of Technology)
10:10 AM Morning Tea/Coffee
Morning Tea/Coffee
10:10 AM - 10:40 AM
Room: Rātā / Engineering Core Building
10:40 AM Plenary talks: Session 2
Session 2
10:40 AM - 11:50 AM
Room: Room E8
Contributions

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

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

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

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

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

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

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

12:07 PM 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 PM Interacting Phantom Dark Energy after DESI DR2 BAO Observations: New Constraints and Tension Alleviation - Zhuochao LI (the Chinese University of Hong Kong)

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

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

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

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

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

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

12:27 PM Effects of scalar dark matter on the merger of binary black holes - Yu-Peng Zhang (Lanzhou University)
12:30 PM Lunch
Lunch
12:30 PM - 1:30 PM
Room: Rātā / Engineering Core Building
1:30 PM Parallel sessions: Cosmology (ACGRG/NZ Gravity Student Talks)
Cosmology (ACGRG/NZ Gravity Student Talks)
1:30 PM - 3:10 PM
Room: Room E5
Contributions

1:30 PM Numerical solutions of the Euler equations on fixed Kasner-type backgrounds with coordinate-dependent fluid-regimes - Joshua Ritchie (University of Otago)

1:50 PM Constraining Inflation Models with Spinning Voids - GEONWOO KANG (Seoul National University)

2:10 PM Big Rip and inhomogeneities: can the Galaxy survive the Big Rip? - Gawain Simpson (University of Tasmania)

2:30 PM Estimating the Cosmic Structure Backreaction: a Buchert’s Averaging Approach on Halo Induced Curvature - Che Li (The Chinese University of Hong Kong)

2:50 PM Modelling the Local Universe with $\Lambda$-Szekeres Models - Morag Hills (University of Canterbury)
Parallel sessions: Dark matter - theory
Dark matter - theory
1:30 PM - 3:10 PM
Room: Room E6
Contributions

1:30 PM Core-collapse supernova simulations coupled with dark photons - Kanji Mori (Keio University)

1:50 PM Spherically Symmetric Fluid Simulations of Black Hole Accretion in Self-Interacting Dark Matter Halos - Tan Chen (Beijing Normal University)

2:10 PM TeV-scale unification of light dark matter and neutrino mass - Shu-Yu Ho (Academia Sinica)

2:30 PM Stone-Skipping Orbits: Resonant Dynamics in ULDM Solitons - Yourong Frank Wang (University of Göttingen)

2:50 PM Testing ultralight dark matter with pulsar timing arrays - Chris Gordon (University of Canterbury)
Parallel sessions: Gravitational waves
Gravitational waves
1:30 PM - 3:10 PM
Room: Room E7
Contributions

1:30 PM Careless Whispers: Sub-threshold post-merger gravitational waves constrain the hot nuclear equation of state - Fiona Panther (University of Western Australia)

1:50 PM Probing ultra-dense matter with gravitational waves from binary neutron star coalescences - Luca Baiotti (The University of Osaka)

2:10 PM Neural Posterior Estimation for BBH Foreground Subtraction in 3G SGWB Searches - Zhenwei Lyu (Leicester International Institute, Dalian University of Technology)

2:30 PM Dynamics of a binary system around SMBH and gravitational waves - Kei-ichi MAEDA (Waseda University)

2:50 PM Efficiency of current gravitational wave microlensing searches using isolated compact object lenses - Uddeepta Deka
3:10 PM Afternoon Tea/Coffee
Afternoon Tea/Coffee
3:10 PM - 3:40 PM
Room: Rātā / Engineering Core Building
3:40 PM Parallel sessions: Gravity - foundational aspects
Gravity - foundational aspects
3:40 PM - 4:40 PM
Room: Room E7
Contributions

3:40 PM Black hole superradiance of interacting multi-fields - Jun Zhang (International Centre for Theoretical Physics Asia-Pacific)

4:00 PM A New Definition of Horndeski Theory and the Possibility of Multiple Scalar Field Extensions - Tomoki KATAYAMA

4:20 PM Application of Solving Inverse Scattering Problem in Holographic Bulk Reconstruction - Run-Qiu Yang (Tianjin University)
Parallel sessions: Late universe cosmology
Late universe cosmology
3:40 PM - 4:40 PM
Room: Room E5
Contributions

3:40 PM Directional variations of cosmological parameters from the Planck CMB data - Ming Chung Chu (The Chinese University of Hong Kong (HK))

4:00 PM Gauge-invariant perturbation cosmology - Malcolm Anderson (Universiti Brunei Darussalam)

4:20 PM Measuring backreaction and spatial curvature in the local Universe - Pierre Mourier (University of Canterbury)
Parallel sessions: Neutrino physics
Neutrino physics
3:40 PM - 4:40 PM
Room: Room E6
Contributions

3:40 PM Status and Prospects of the RELICS Experiment - Jingqiang Ye (The Chinese University of Hong Kong, Shenzhen)

4:00 PM Direct Neutrino Mass Measurements: Status, Recent Advances, and Future Prospects - Khushbakht Habib (Karlsruhe Institute of Technology)

4:20 PM Galactic Neutrino Source Searches with IceCube in the Multi-Messenger Era - Ankur Sharma (University of Canterbury)
4:40 PM Poster session

4:40 PM - 6:10 PM
Room: Rātā / Engineering Core Building

5:00 PM ASGRG Biennial General Meeting

5:00 PM - 5:45 PM
Room: Room E6
7:30 PM Public lecture: Scanning the Darkest Skies (Richard Easther, U Auckland)
Scanning the Darkest Skies (Richard Easther, U Auckland)
7:30 PM - 8:30 PM
Room: Great Hall
Contributions

7:30 PM Scanning the Darkest Skies - Richard Easther (The University of Auckland)
Tuesday, July 7, 2026
9:00 AM Plenary talks: Session 3
Session 3
9:00 AM - 10:45 AM
Room: Room E8
Contributions

9:00 AM Bustling Universe Radio Survey Telescope in Taiwan (BURSTT): Status and Prospect - Jiwoo Nam (National Taiwan University)

9:35 AM New Measurements in the Era of Precision Neutrino Physics - Nicole Bell (The University of Melbourne)

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

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

11:50 AM Status and perspectives of KAGRA - Hirotaka Takahashi (Tokyo City University)
12:30 PM Lunch
Lunch
12:30 PM - 1:30 PM
Room: Rātā / Engineering Core Building

1:30 PM Conference Excursion: Christchurch Gondola
Christchurch Gondola
1:30 PM - 5:30 PM
Room: Departure 1:30pm from Rātā / Engineering Core Building
Wednesday, July 8, 2026
9:00 AM Plenary talks: Session 5
Session 5
9:00 AM - 10:10 AM
Room: Room E8
Contributions

9:00 AM Black Holes Trapped by Ghosts - Bin Wang (Shanghai Jiao Tong University / Yangzhou University)

9:35 AM PeVatrons: The Most Extreme Particle Accelerators in our Galaxy - Sabrina Einecke (University of Adelaide)
10:10 AM Morning Tea/Coffee
Morning Tea/Coffee
10:10 AM - 10:40 AM
Room: Rātā / Engineering Core Building
10:40 AM Plenary talks: Session 6
Session 6
10:40 AM - 11:55 AM
Room: Room E8
Contributions

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

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

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

12:10 PM APCosPA Council Meeting (over lunch)

12:10 PM - 1:30 PM
Room: Room 119

Lunch
Lunch
12:10 PM - 1:30 PM
Room: Rātā / Engineering Core Building
1:30 PM Parallel sessions: Dark matter - detection
Dark matter - detection
1:30 PM - 3:10 PM
Room: Room E6
Contributions

1:30 PM Searching for ultralight dark matter from terrestrial magnetic fields - Kimihiro Nomura (Kyoto University)

1:50 PM WimPyDD and WimPyC: Python codes exploiting the complementarity between WIMP direct detection and indirect detection - Sunghyun Kang (CQUeST, Sogang University)

2:10 PM First Bubbles in the SBC-LAr10 Detector - Russell Neilson (Drexel University)

2:30 PM Development of A Novel Compton Camera for MeV Gamma Ray Measurement - Mengjiao Xiao (Shanghai Jiao Tong University)

2:50 PM 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)
1:30 PM - 3:10 PM
Room: Room E5
Contributions

1:30 PM Standard Siren Cosmology in the Era of the Next-generation Gravitational Wave Detectors - SHANGJIE JIN (University of Western Australia)

1:50 PM PBH Flybys of SMBHs: Say Hello, Wave Goodbye - Laura Burn (University of Auckland)

2:10 PM The Hunt for the next Galactic supernova - Tarin Eccleston (The University of Auckland)

2:30 PM Massive black holes in binary solitons - Russell Boey (University of Auckland)

2:50 PM 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
1:30 PM - 3:10 PM
Room: Room E7
Contributions

1:30 PM Pseudospectrum and (in)stability of black hole total transmission mode - Yu-Sen Zhou (University of Science and Technology of China)

1:50 PM The Teukolski equation for the Baines-Visser spacetime - Joshua Baines (The University of Melbourne)

2:10 PM Black hole interior and complexity of homogeneous holographic solids under shear strain - Wei-Jia Li

2:30 PM A photon cloud induced from an axion cloud - Zi-Yu Tang

2:50 PM Gravity with torsion and matter–antimatter asymmetry - Nikodem Poplawski (University of New Haven)
3:10 PM Afternoon Tea/Coffee
Afternoon Tea/Coffee
3:10 PM - 3:40 PM
Room: Rātā / Engineering Core Building
3:40 PM Parallel sessions: Astroparticle and relativistic astrophysics
Astroparticle and relativistic astrophysics
3:40 PM - 5:20 PM
Room: Room E6
Contributions

3:40 PM Magnetic field in low–mass X–ray binaries and Dark Matter signals - Stefano Scopel (CQUeST, Sogang University)

4:00 PM UHECRs Beyond the GZK Limit as Magnetic Monopole Candidates - Michael Padgett (Vanderbilt University)

4:20 PM Testing the Leptogenesis from Observable Gravitational Waves - Yongcheng Wu (Nanjing Normal University)

4:40 PM 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
3:40 PM - 5:20 PM
Room: Room E7
Contributions

3:40 PM Non-Markovian effects in stochastic inflation - Diego Cruces Mateo (Institute of Theoretical Physics - Chinese Academy of Sciences (ITP,CAS))

4:00 PM 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)

4:20 PM A Unified Axion Framework for Dark Sectors and Early Structure Formation - Cindy Gulis (Department of Astronomy & Astrophysics, The Pennsylvania State University)

4:40 PM Impact of light sterile neutrino on cosmic structure formation - Rui HU (Chinese University of Hong Kong)

5:00 PM 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)
3:40 PM - 5:20 PM
Room: Room E5
Contributions

3:40 PM From Black Holes to Stars: Rigidity Beyond Einstein Gravity - Nitesh Dubey (Indian Institute of Astrophysics, Bengaluru)

4:00 PM Asymptotic Generation of Kerr Geometry from Schwarzschild via BMS Supertranslations - Nihar Ranjan Ghosh

4:20 PM Internal instability in charged black holes - Travers Bloemsaat

4:40 PM Numerical Implementation of the Friedrich-Nagy Initial Boundary Value Problem - Areeba Merriam (University of Canterbury)

5:00 PM Gravitational wave simulations from past to future null infinity - Chris Stevens (University of Canterbury)
6:00 PM Conference Dinner

6:00 PM - 10:00 PM
Room: Dr Bk Ngau Tī Kōuka Room
Thursday, July 9, 2026
9:30 AM Plenary talks: Session 7
Session 7
9:30 AM - 10:45 AM
Room: Room E8
Contributions

9:30 AM On Dark Energy Reconstruction and Interpretation - Arman Shafieloo (Korea Astronomy and Space Science Institute)

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

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

11:50 AM The Present and Future of Neutrino Astronomy - Naoko Kurahashi Neilson (Drexel University, USA)
12:30 PM Lunch
Lunch
12:30 PM - 1:30 PM
Room: Rātā / Engineering Core Building
1:30 PM Parallel sessions: Black holes - Mathematical aspects
Black holes - Mathematical aspects
1:30 PM - 3:10 PM
Room: Room E5
Contributions

1:30 PM The (non-)uniqueness of multipole moments beyond general relativity - Arthur Suvorov (University of Alicante)

1:50 PM Kerr black holes as circular polarizers - De-Chang Dai (National Dong Hwa University)

2:10 PM The hidden symmetries of slowly rotating black holes - Finnian Gray (Macquarie University)

2:30 PM How Time-Evolving Photon Polarization Encodes Kerr Ringdown - Yehui Hou (Tsung-Dao Lee Institute)

2:50 PM Physical horizons versus mathematical horizons - Matt Visser (Victoria University of Wellington)
Parallel sessions: Gravity - foundational aspects
Gravity - foundational aspects
1:30 PM - 3:10 PM
Room: Room E7
Contributions

1:30 PM Gravity-Induced Entanglement in an infinite square well - Fu-Wen Shu (Nanchang University)

1:50 PM Hunting for the observational signature of universal horizon and Lorentz-violation effects - Chao Zhang (China University of Petroleum-Beijing)

2:10 PM Inside Black Holes, Singularity to Complementarity - Dingfang Zeng (Beijing University of Technology)

2:30 PM Topological perspective on bulk boundary thermodynamic equivalence - Si-Jiang Yang (Hainan University)
Parallel sessions: Observational cosmology
Observational cosmology
1:30 PM - 3:10 PM
Room: Room E6
Contributions

1:30 PM Mapping the nanohertz gravitational-wave sky to reveal the origin of the stochastic background - Eric Thrane (Monash University)

1:50 PM Do Cosmic String Segments Emit Gravitational Waves? - Akifumi Chitose (Institute for Cosmic Ray Research, University of Tokyo)

2:10 PM The Effect of Dark Energy on the Void-Galaxy Perpendicular Alignments - Jounghun Lee

2:30 PM Testing universal pressure profile models on Sunyaev-Zel'dovich galaxy cluster data - Denis Tramonte (Xi'an Jiaotong-Liverpool University)

2:50 PM Muztagh-Ata 1.93-meter Synergy Telescope and lensing time delay - Bin Hu (Beijing Normal University)
3:10 PM Closing Remarks and Award Presentations

3:10 PM - 3:40 PM
Room: Room E8

3:40 PM Afternoon Tea/Coffee
Afternoon Tea/Coffee
3:40 PM - 4:10 PM
Room: Rātā / Engineering Core Building