Conveners
Parallel sessions: Dark matter - theory
- Torsten Bringmann (University of Oslo (NO))
Parallel sessions: Neutrino physics
- Gary Hill (University of Adelaide)
Parallel sessions: Dark matter - detection
- Kenny Chun Yu Ng (The Chinese University of Hong Kong)
Parallel sessions: Astroparticle and relativistic astrophysics
- Sabrina Einecke (University of Adelaide)
Parallel sessions: Observational cosmology
- David Wiltshire (University of Canterbury)
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Kanji Mori (Keio University)06/07/2026, 13:30Parallel Session Talk
Recent studies on the dark photon (DP) production in collapsing stars argue that the cooling effect induced by DPs can hinder supernova explosions and lead to a โfailing supernovaโ constraint on the photon-DP mixing parameter ๐. In order to verify the idea, we perform two-dimensional neutrino-radiation hydrodynamic simulations coupled with the DP production with the masses of 0.3 and 0.45 MeV....
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Tan Chen (Beijing Normal University)06/07/2026, 13:50Parallel Session Talk
We present spherically symmetric fluid simulations of black hole accretion in self-interacting dark matter (SIDM) halos, focusing on how collisional heat transport and gravothermal evolution regulate the central inflow. The black hole is modeled as a growing central point mass, and its accretion rate evolves self-consistently with the inner halo structure. Varying the SIDM halo parameters, we...
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Mr Shu-Yu Ho (Academia Sinica)06/07/2026, 14:10Parallel Session Talk
We demonstrate that TeV-scale heavy neutral leptons (HNLs) responsible for inverse-seesaw neutrino mass generation can simultaneously fix the cosmological abundance and decay properties of dark matter (DM). The spontaneous breaking of lepton number gives rise to a pseudo-Nambu-Goldstone boson that serves as a light DM candidate, whose mass originates from a small explicit breaking term. The...
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Yourong Frank Wang (University of Gรถttingen)06/07/2026, 14:301Parallel Session Talk
The solitonic core is a prediction of ultralight dark matter (ULDM), yet its dynamical response to perturbations from orbiting compact objects remains poorly understood.
The orbit of a black hole embedded within a ULDM soliton is naively expected to decay due to dynamical friction. However, simulations have shown that single black holes can instead undergo โstone skippingโ, in which the...
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Chris Gordon (University of Canterbury)06/07/2026, 14:50Parallel Session Talk
Pulsar timing arrays have detected a nanohertz gravitational-wave
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background, most naturally associated with supermassive black hole
binaries. The low-frequency shape of this signal may also probe the
environments in which those binaries evolve, including possible
interactions with ultralight dark matter. I will discuss recent work
using PTA data to test this possibility, focusing on... -
Prof. Jingqiang Ye (The Chinese University of Hong Kong, Shenzhen)06/07/2026, 15:40Parallel Session Talk
Coherent Elastic Neutrino-Nucleus Scattering (CEvNS) is a well-understood Standard Model (SM) process with an enhanced cross section for MeV neutrinos. The CEvNS from solar B-8 neutrinos and atmospheric neutrinos define the so-called neutrino fog for dark matter direct detection, which motivates the measurement of its cross section. The large cross-section also makes CEvNS a promising method...
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Khushbakht Habib (Karlsruhe Institute of Technology)06/07/2026, 16:00Parallel Session Talk
The determination of the absolute neutrino mass scale remains one of the central open questions in particle physics and cosmology. Several complementary approaches address this question, including direct kinematic measurements, searches for neutrinoless double-beta decay, and constraints from cosmological observations. Neutrinoless double-beta decay experiments aim to uncover whether neutrinos...
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Ankur Sharma (University of Canterbury)06/07/2026, 16:20Parallel Session Talk
Following IceCubeโs recent detection of Galactic plane emission, resolving individual Galactic neutrino sources has become an important objective. In this talk, I will present an overview of the current status of Galactic neutrino source searches with IceCube, focusing on the transition from source detection to source identification in the multi-messenger era. I will discuss how observations...
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Kimihiro Nomura (Kyoto University)08/07/2026, 13:30Parallel Session Talk
We present a novel search for ultralight dark matter using terrestrial magnetic field measurements at frequencies below 100 Hz, focusing on dark photon dark matter as a representative candidate. Coherently oscillating dark photon dark matter can induce a monochromatic magnetic field via kinetic mixing with ordinary photons. Notably, for dark photon masses around 3 \times 10^{-14} eV, the...
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Sunghyun Kang (CQUeST, Sogang University)08/07/2026, 13:50Parallel Session Talk
I introduce WimPyDD and WimPyC which are object-oriented and customizable Python codes that calculate accurate predictions for the expected rates in WIMP direct detection experiments and WIMP capture rate in celestial bodies as indirect detection within the framework of Galilean invariant non-relativistic effective theory. Due to the experimental threshold direct detection can not explore...
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Russell Neilson (Drexel University)08/07/2026, 14:10Parallel Session Talk
The Scintillating Bubble Chamber (SBC) Collaboration develops noble liquid bubble chambers for the detection of low-mass (GeV-scale) particle dark matter and coherent neutrino scattering (CEvNS) at nuclear reactors. Like other bubble chamber dark matter detection efforts, SBC relies on the intrinsic background discrimination seen in superheated fluids: nuclear recoils from WIMP and neutrino...
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Mengjiao Xiao (Shanghai Jiao Tong University)08/07/2026, 14:30Parallel Session Talk
The astrophysical observations of gamma rays at MeV energies have not yet been well-explored due to the limitation of detection technology. The so-called โMeV-gapโ exists. Opening the window of MeV gamma ray is not only critical for gamma astronomy but also key for many frontier researches in astro-particles, such as looking for the light dark matter, probing the primordial black hole and...
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Daniel Marcantonio (University of Melbourne)08/07/2026, 14:501Parallel Session Talk
SABRE is an international collaboration that will operate similar particle detectors in the Northern (SABRE North) and Southern Hemispheres (SABRE South). This innovative approach aims to distinguish potential dark matter signals from seasonal backgrounds: a pioneering strategy only feasible with a Southern Hemisphere experiment. SABRE South is located at the Stawell Underground Physics...
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Stefano Scopel (CQUeST, Sogang University)08/07/2026, 15:40Parallel Session Talk
Recent studies suggest that the intensity of the magnetic
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field in low-mass X-ray binaries (LMXBs) is much smaller that its
equipartition value. If the black hole in the binary is surrounded by
a DM spike this would strongly suppress the strength of synchrotron
emission from Dark Matter (DM) induced electron--positron pairs. We
analyze the issue in detail and conclude that, instead, the... -
Michael Padgett (Vanderbilt University)08/07/2026, 16:00Parallel Session Talk
A recent event in Ultra High Energy Cosmic Rays (UHECRs) known as the Amaterasu particle is the foundation of a possible glimpse into beyond the standard model physics. The particle was detected by the Telescope Array Project in 2021 and later identified in 2023 with an energy exceeding 240 EeV. There exists a limit that applies to protons as UHECRs known as the GZK limit. It is derived by...
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Prof. Yongcheng Wu (Nanjing Normal University)08/07/2026, 16:20Parallel Session Talk
Leptogenesis provides an elegant mechanism to explain the observed baryon asymmetry of the Universe (BAU), yet its experimental verification remains challenging due to requirements of either extremely heavy right-handed neutrinos or precisely fine-tuned mass splittings. We adapt a solution by introducing an extra scalar field that significantly enhances CP asymmetry through loop-level...
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Sebastian Vergara Carrasco (University of Canterbury (UC))08/07/2026, 16:40Parallel Session Talk
Over the past few decades, gamma-ray observations at TeV energies have significantly advanced our understanding of extreme processes in our galaxy. However, key questions about cosmic-ray acceleration remain, particularly regarding their maximum energy and their connection to features like the "knee" and "ankle" in the cosmic-ray spectrum. Extending gamma-ray observations to higher energies is...
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Eric Thrane (Monash University)09/07/2026, 13:30Parallel Session Talk
A key question has emerged in the wake of recent observations in pulsar timing astronomy: what is the origin of the nanohertz gravitational-wave background? If the background can be firmly linked to the mergers of supermassive binary black holes, there will be important implications for cosmology: from the evolution of supermassive black holes over cosmic time to the formation of galaxies. On...
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Akifumi Chitose (Institute for Cosmic Ray Research, University of Tokyo)09/07/2026, 13:50Parallel Session Talk
Cosmic strings are predicted in various extensions of the Standard Model, including grand unified theories. Depending on the symmetry-breaking pattern, they can be either topologically stable or metastable. Intriguingly, metastable strings have been proposed as a possible origin of the gravitational wave (GW) background observed by recent pulsar timing array experiments. When metastable...
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Jounghun Lee09/07/2026, 14:10Parallel Session Talk
In my talk, it will be presented that the perpendicular alignments of void-surface galaxies can in principle be a powerful probe of the dynamic nature of dark energy (DE). Applying the Void-Finder algorithm to the AbacusSummit simulations performed for extensive ranges of DE cosmologies, we have numerically discovered that the shape axes of void-surface galactic halos tend to be...
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Denis Tramonte (Xi'an Jiaotong-Liverpool University)09/07/2026, 14:30Parallel Session Talk
The electron pressure profile is a convenient tool to characterize the thermodynamical state of a galaxy cluster, with several studies adopting a "universal" functional form. In this talk, I will present a recent work aimed at testing this assumption over a population-level cluster sample, using Sunyaev-Zel'dovich (SZ) data and four different parameterizations for the cluster pressure profile:...
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Prof. Bin Hu (Beijing Normal University)09/07/2026, 14:50Parallel Session Talk
Transient lensing is a promising phenomenon for the time-domain cosmology era. Compared with the static lensing observation, transient lensing can provide us time delay measurement which directly reflect the gravitational potential instead of the gradient of the potential. However, different sources of transient lensing systems have their own pros and cons. In this talk, I will introduce our...
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