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21/07/2026, 10:00
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丽桃 杨 (清华大学)21/07/2026, 10:20
CDEX合作组使用高纯锗半导体探测器在位于四川西昌的中国锦屏地下实验室（CJPL）开展暗物质探测和无中微子双贝塔衰变实验研究。本报告将简要总结CDEX-1和CDEX-10两个实验阶段的物理成果，并重点介绍目前正在建设的CDEX-50暗物质实验，以及面向未来大型高纯锗阵列实验的一系列关键技术预研。
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Fei Gao (Tsinghua University)21/07/2026, 10:40
对中微子和暗物质本性的理解是当今物理学和天文学最重要的问题之一。过去30多年来，科学家们发展了一套基于深地实验室的暗物质直接探测方法，测量灵敏度提升了几个数量级。XENONnT是运行于意大利格兰萨索地下实验室的液氙暗物质探测实验，其中6吨高纯氙原子用于捕捉暗物质和中微子产生的稀有信号。自运行以来，XENONnT已经获得采集了3批实验数据，总曝光量达到7.8吨x年。我将介绍XENONnT近期基于这些实验数据取得的太阳中微子和暗物质探测结果。
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天禄 陈21/07/2026, 11:00
高海拔天体辐射探测实验（HADAR）实验是新一代地面成像大气切伦科夫望远镜阵列。该实验首创采用半球形“水透镜”折射式光学系统，成功突破了传统反射式望远镜因相机自身的遮挡造成视场狭窄的瓶颈。凭借高海拔与创新技术，HADAR能实现~10 GeV的低探测阈能与60°×60°大视场的完美结合。它不仅能精确测量伽马射线点源，更将在多信使天文学时代，为实时捕捉伽马射线暴（GRB）等瞬变天体、寻找极端宇宙爆发的甚高能电磁对应体提供关键的观测数据。
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川 岳 (紫金山天文台)21/07/2026, 11:20
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沪生 管 (西湖大学)21/07/2026, 12:10
我们将在报告中介绍一种面向暗光子暗物质探测的实验方案及最新原型机实验结果。该方法利用特殊光学结构增强潜在暗光子信号，并在室温条件下开展探测实验。报告将介绍实验中的弱光标定方法与多像素数据分析策略，以提升对微弱暗光子信号的识别能力。目前原型机已有三个月的曝光数据，尚未观测到具有统计显著性的信号，并据此对暗光子暗物质参数空间给出了约束。
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发朋 黄 (Sun Yat-sen University)21/07/2026, 12:30
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Junjie Cao21/07/2026, 12:50
We summarize the key points in building realistic supersymmetric theories and discuss their implications at colliders.
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立功 边21/07/2026, 13:10
本报告主要汇报我们近几年在轴子暗物质相关拓扑缺陷研究中的进展。
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雯宇 王21/07/2026, 15:30
Dark photons, which can kinetically mix with ordinary photons, represent the simplest extension to the standard model. Detecting their oscillations with visible photons could provide crucial insights into the nature of dark matter and fundamental interactions beyond the standard model. We propose a novel laboratory-based approach to detect dark photon oscillations using a laser in an Optical...
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Yong Tang (University of Chinese Academy of Sciences)21/07/2026, 15:50
Space-Based Laser Interferometers, LISA, Taiji and Tianqin, are not only sensitive to gravitational waves, but can also be able to probe ultralight dark matter. We shall report recent progresses on this topic.
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云龙 张 (中国科学院国家天文台)21/07/2026, 16:10
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一帆 陈 (李政道研究所)21/07/2026, 16:30
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王 WANG 志伟 ZHIWEI (University of Electronic Science and Technology of China (UESTC))21/07/2026, 16:50
This talk presents a unified view of glueball dark matter and related composite states in confining dark Yang–Mills sectors. I first review lattice-informed effective descriptions of dark confinement and chiral dynamics, and show how the resulting phase transitions can generate potentially observable gravitational-wave signals, especially in fermionic and near-conformal regimes. I then discuss...
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Qiang Yuan (Key Laboratory of Dark Matter and Space Astronomy)21/07/2026, 17:40
Self-bound dark matter subhalos are predicted to populate galactic halos in great abundance in the Cold Dark Matter (CDM) scenario. These substructures can leave observable imprints in strong gravitational lensing and have shown the ability to account for flux-ratio and image position anomalies in the multiple lensed images. In this paper, we utilize the dark matter subhalos to address the...
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Yongchao Zhang (Southeast University)21/07/2026, 18:00
We update the SN1987A constraints on the dark photon and $Z'$ bosons in the $U(1)_{B-L}$ model, in the approximation of one-pion exchange for nucleon-bremsstrahlung process. The dependence on the supernova profiles and geometric effects are taken into account. For the $U(1)_{L_\mu - L_\tau}$ model, the production of the $Z'$ boson is dominated by the lepton pair coalescence and semi-Compton processes.
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岩 巩 (中国科学院国家天文台)21/07/2026, 18:20
宇宙学巡天观测是探测暗物质性质的重要手段。本报告将介绍利用lyman-alpha森林、矮星系丰度观测数据对模糊暗物质和温暗物质粒子质量等性质的最新探测结果，并讨论未来中国空间站巡天空间望远镜（CSST）的宇宙学观测对中微子质量和、极轻轴子轴子质量、原初黑洞等暗物质候选者的探测精度。
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伟 晁 (北京师范大学)21/07/2026, 18:40
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一中 范 (紫金山天文台)21/07/2026, 19:00
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伟 季22/07/2026, 09:40
Ferromagnetic materials offer the unique advantages of an exceptionally high spin density and large remanent magnetization. When levitated, a ferromagnet can serve as an ultrasensitive magnetometer, while soft ferromagnetic materials with low remanence provide efficient magnetic shielding. In this talk, I will introduce a hybrid ferromagnetic platform that combines these complementary...
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Takumi Kuwahara (Jilin U)22/07/2026, 10:00
Composite asymmetric dark matter (ADM) is the framework that naturally explains the coincidence of the baryon density and the dark matter density of the Universe. Through a portal interaction sharing particle-antiparticle asymmetries in the Standard Model and dark sectors, dark matter particles, which are dark-sector counterparts of baryons, can decay into antineutrinos and dark-sector...
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Lingfeng Li (南京师范大学)22/07/2026, 10:20
We present a scenario for GeV-scale thermal dark matter that can only be tested with accelerator experiments. Dark matter is composed of dark pions arising from a confining strong interaction in the dark sector. The thermal relic density is obtained through the interplay of up-scatterings of dark pions to heavier dark mesons (the dark counterparts of the kaons and $\eta$), and decays of the...
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Chuan-Yang Xing (China University of Petroleum)22/07/2026, 10:40
Sub-meV 质量区间是暗光子和轴子等超轻玻色暗物质的重要搜索窗口，但传统微波腔和反射盘面等探测方案在该区间的灵敏度受到限制。本报告介绍一种平行板波导的探测器，通过慢波响应和沿波导方向的相干积累，可在保持开放几何面积的同时实现导波增强。研究表明，低温铜波导可将暗光子混合参数的灵敏度推进到 $10^{-15}$ 量级。加入外加磁场后，该方案也可扩展用于 sub-meV 轴子探测。
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Da Liu (Shandong University)22/07/2026, 11:00
In this talk, I will discuss about my recent work on the searches for the ultralight scalar dark matter with quadratic interactions with SM fields. This will lead to the effective interactions between the ultralight dark matter and the nucleon fields phi^2 N N/f below the QCD confinement scale, which can be thought as potential barrier for the dark matter wind in the presence of ordinary...
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腾 马22/07/2026, 11:50
We propose a new framework for solving the strong CP problem via a heavy axion, using mirror symmetry and grand unification. The mirror GUT sector remains unbroken and dynamically generates a calculable heavy mass scale via confinement without fine tuning. Models in this class feature a heavy axion, whose potential is less sensitive to Planck scale corrections, as well as a rich hidden sector...
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晨 孙22/07/2026, 12:10
Many well-motivated UV theories contain bonsonic light degrees of freedom, which can be dark matter candidates. This leads to many new ideas and novel observables in recent years to probe new physics in astrophysical and laboratory setups alike. In this talk, I will briefly review a few examples in leveraging the wave-like features to test ultralight dark matter. These include the...
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Xiaoyong Chu (University of Chinese Academy of Sciences)22/07/2026, 12:30
In the early universe, dark matter (DM) may undergo freeze-out to reach its observed relic abundance. Unlike conventional WIMPs, SIMPs (Strongly Interacting Massive Particles) achieve this via efficient number-changing annihilations, motivated by astrophysical small-scale structure puzzles. However, SIMPs face two critical hurdles: (i) the strong couplings needed for successful freeze-out may...
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金伟 王 (电子科技大学)22/07/2026, 12:50
We present the first dedicated analysis of cosmic-ray boosted dark matter (CRDM) in paleo detectors. Owing to their large kinetic energies, CRDM particles generate nuclear-recoil tracks that extend to substantially larger lengths than those produced by dominant backgrounds from neutrinos and intrinsic radioactivity. Combined with the ultra-large effective geological exposure of $10^5$ t yr,...
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峤立 杨 (暨南大学)22/07/2026, 13:10
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思学 秦22/07/2026, 15:30
The extreme disparity between the Planck-scale vacuum energy and the observed cosmological constant, alongside the \textit{ad hoc} TeV-scale cutoff required to stabilize the electroweak hierarchy, present profound interrelated crises in fundamental physics. We propose an effective field theory wherein continuous spacetime emerges from a discrete Poisson substrate governed by a non-linear...
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志龙 韩 (济南大学)22/07/2026, 15:50
The Scotogenic mechanism is an appealing pathway to naturally explain the common origin of dark matter and tiny neutrino mass. However, the conventional scotogenic dark matter usually suffers stringent constraints from the non-observation of lepton flavor violation and direct detection. To generate the non-zero neutrino masses, at least two generations of dark particles are required. For...
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琳 邾22/07/2026, 16:10
针对质量在 10⁻³ 到 1 eV 范围内的轻质量暗物质，其德布罗意波长较长，能够与宏观物体发生相干散射，从而极大地增强散射截面和产生的加速度。为此，论文设计了一种特殊的扭秤，其测试质量块由一个实心立方体和一个空心立方壳组成，两者质量相同但几何尺寸差异巨大。由于相干效应与物体尺寸相关，暗物质“风”会对这两个测试质量块产生不同的加速度，进而形成一个可测量的净力矩。通过重新分析现有等效原理实验的灵敏度，该方案在 10⁻³ 到 1 eV 的质量范围内，对暗物质-核子散射截面给出了迄今为止最严格的直接探测限制，其灵敏度可达约 10⁻⁵¹ cm²。这项工作为探测这一尚未被充分探索的轻质量暗物质区域开辟了新的途径。
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盼盼 王22/07/2026, 16:30
Cold dark matter is one of the most compelling candidates for dark matter, and its intrinsic properties suggest that it can accumulate near the central supermassive black holes of galaxies, forming dense dark matter halos. Space-based gravitational wave (GW) detectors, with their high sensitivity, offer a promising avenue to probe the existence of dark matter through its effects on GW signals....
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Liangliang Shang22/07/2026, 16:50
The supersymmetric custodial triplet model (SCTM), which is a fully supersymmetric generalization of the Georgi-Machacek (GM) model, is constructed by extending the Higgs sector of the minimal supersymmetric standard model by three triplet chiral superfields with hypercharge $Y = 0, \pm1$, in order to maintain the holomorphy of the superpotential and satisfy the requirements of anomaly...
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Zhijun Li (Sun Yat-sen University)22/07/2026, 17:05
Direct detection experiments have imposed stringent experimental constraints on dark matter with masses greater than 1 GeV, while much looser limits apply to lighter sub-GeV dark matter due to their non-relativistic velocities, which prevent them from reaching the detection thresholds of most traditional experimental methods. BESIII is a general-purpose detector operating at BEPCII with...
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Haiying Cai (jxnu)22/07/2026, 17:50
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武龙 许 (成都工业学院)22/07/2026, 18:05
In this work we consider the scattering between non-relativistic particles with different finite sizes. We first calculate their interaction potential and apply the partial wave method to obtain their scattering cross section. Our findings show that the particle size can significantly affect the scattering between non-relativistic particles. Then we apply such a study to direct detection of...
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Quan-feng Wu (Purple Mountain Observatory, Chinese Academy of Sciences)22/07/2026, 18:20
Big Bang Nucleosynthesis (BBN) provides a precision laboratory for the MeV-era Universe, turning light-element abundances and the radiation content into stringent tests of new physics.
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I will review the key BBN ingredients and emphasize how departures from standard expansion and neutron–proton conversion translate into constraints on exotic energy injection, and the impact of hadronic decay... -
Yuanlin(远林) Gong(龚) (Nanjing Normal University)22/07/2026, 18:35
Ultralight dark matter candidates, such as axions and dark photons, are leading dark matter candidates. They may couple feebly to photons, sourcing oscillating electromagnetic signals in the Earth's conducting cavity formed between the ground and the ionosphere, providing detectable magnetic field signatures at wavelengths above the Earth's size. We carry out a project aiming to search for new...
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Yuanchao Lou (Nanjing normal university)22/07/2026, 18:50
Nuclear reactors provide intense neutron-capture environments and can act as controlled terrestrial sources of MeV-scale dark-sector particles. In this talk, I will discuss reactor-produced dark photons and dark matter from nuclear de-excitation. In the kinetically mixed vector-portal framework, excited nuclei can emit an on-shell vector mediator via N* -> N V, which can either decay visibly...
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文娜 杨 (南京师范大学)22/07/2026, 19:05
Axion and axion-like particles (ALPs), predicted in various extensions of the Standard Model, can be abundantly produced in nuclear reactors via the Primakoff process. In this work, we explore the detection of ALPs in silicon detectors through plasmon excitations. Owing to their relativistic nature, reactor-produced ALPs can efficiently excite plasmon resonances, while the accompanying...
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奕 茅 (清华大学)23/07/2026, 09:40
宇宙中性氢气体被电离的同时会被加热，其效应会持续到再电离结束后的时期。由于再电离高度非均匀性，再电离结束后的中性氢气体性质会受到重要影响，Lyα森林功率谱在大尺度上因此改变可达50%，即“再电离热余晖效应”。通过这一效应，温暗物质在小尺度上对于电离源的影响会转变为Lyα森林功率谱在大尺度上的调制，从而有希望通过DESI的Lyα森林功率谱测量限制温暗物质的性质。我们在报告中预测利用DESI限制温暗物质质量的精度。
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建辉 连23/07/2026, 10:00
受限于银河系内部视角和观测能力，人们对银河系内物质分布和整体结构长期缺乏清晰的认识。幸运的是，过去10年相继开展的大型恒星光谱巡天为我们认识银河系打开了新的窗口。在本次报告中，我将简要回顾过去10年基于恒星光谱巡天，银河系结构认识的重要演变，包括银河系盘的径向结构偏离单指数的新发现，以及这些新认知对银河系其他领域研究的影响。
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Zhaozhou Li (Nanjing University)23/07/2026, 10:20
This talk presents a phase-space perspective on dark matter halo assembly and evolution. First, we show that large-scale environments shape the infall orbit distributions of subhalos, setting the initial conditions for halo assembly. Second, we demonstrate that the dynamical relaxation of accreted material gives rise to universal phase-space scaling relations and distribution functions....
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佳骏 张 (中国科学院上海天文台)23/07/2026, 10:40
现代宇宙学的研究中，暗物质的性质是一个研究重点，使用宇宙学数值模拟技术探讨宇宙大尺度结构的演化以及暗物质的性质是一个被证明非常有效的技术。然而，突破标准模型的宇宙学数值模拟需要在现有宇宙学数值模拟的框架上做诸多修正，技术复杂，研究门槛高，有大量的暗物质模型因此无法得到有效验证。近年来，以大语言模型为代表的人工智能技术的发展对科学研究带来了深刻的变革，例如DeepSeek等大语言模型已经迅速普及到生活中的各个领域。我们基于DeepSeek大语言模型，开发了针对宇宙学数值模拟的智能体，该智能体使用多智能体协同技术，兼有文献调研，代码分析，形成报告等功能，可以让用户以一句话就完成复杂的宇宙学数值模拟软件的生成。我们经过评估发现，该智能体可以有效避免幻觉产生，形成有实际生产能力的工作指南。使用这些工作指南，我们自动化开发了包括SIDM，WDM等模型在内的宇宙学数值模拟软件。在开发效率方面，和...
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鑫 王 (中国科学院大学)23/07/2026, 11:00
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Prof. Huanyuan Shan (Shanghai Astronomical Observatory, CAS)23/07/2026, 11:50
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家信 韩 (李政道研究所)23/07/2026, 12:10
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Daneng Yang (Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210023, China)23/07/2026, 12:30
Galaxy formation, viewed as an inference problem from incomplete information, is inherently stochastic. Reducing the full simulation state to a coarse-grained set of variables integrates out unresolved degrees of freedom, motivating an effective stochastic description of galaxy formation in reduced variables. Existing approaches have achieved substantial predictive success, but generally lack...
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Jingkun Zhao (National Astronomical Observatories of China)23/07/2026, 12:50
银晕中由球状星团潮汐瓦解形成的星流结构相对脆弱，对银河系引力势高度敏感，因此是约束引力势模型的理想示踪体。本研究结合暗能量巡天（DES）与Pan-STARRS项目的测光数据，以及Gaia卫星的天体测量数据，采用改进的匹配滤波方法，成功证认了NGC 5466星流中的194颗高置信度成员星。通过将观测到的星流结构与在不同引力势参数下生成的模拟星流进行对比，我们估算出银晕暗物质密度轮廓接近球形（轴比 q≈1.02）。
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Bohua Li (Guangxi University)23/07/2026, 13:10
Ultralight scalar field dark matter is one of the most popular dark matter candidates today. It naturally predicts a kination phase in the early Universe while affecting the formation of cosmic structures during the matter-dominated era. In this talk, I will present new theoretical progress and discuss the 21-cm and gravitational-wave probes of ultralight dark matter.
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悦 赵 (香港科技大学)23/07/2026, 15:30
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Andrew Miller (ICTP - AP / University Chinese Academy of Sciences)23/07/2026, 15:50
Dark matter could compose ~80% of all matter in the universe, and yet it is completely invisible to us. Despite decades of experiments designed to detect dark matter, and numerous models for potential dark matter particles, no concrete evidence has been put forward to support the existence of beyond standard-model physics. Because of this, it is worth asking whether approaching the detection...
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怀珂 郭 (国科大国际理论物理中心)23/07/2026, 16:10
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昌鸿 李 (云南大学)23/07/2026, 16:30
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然 丁23/07/2026, 16:50
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Siyuan Hou (Purple Mountain Observatory, Chinese Academy of Sciences (PMO, CAS))23/07/2026, 17:40
Understanding the nature of dark matter remains a central challenge in physics. Flux-ratio anomalies in strongly lensed quasars provide one of the few observational probes of dark matter structure down to ∼ 10⁶ M⊙. Here we present the first population-level statistical analysis of cusp-configuration flux-ratio anomalies using the latest set of microlensing-free measurements from 17 quadruply...
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Zheng-Long Wang23/07/2026, 17:55
暗物质和修正引力长期以来都是解释星系旋转曲线异常的重要方案，但二者在银河系尺度上仍存在明显争议。我们结合银河系径向旋转曲线、Gaia 数据揭示的垂直相空间螺旋结构，以及最新的断裂指数恒星盘模型，同时约束银河系的径向和垂直引力场。研究发现，MOND 和 STVG 等修正引力模型虽然能够解释部分局部垂直引力势，但无法同时匹配银河系旋转曲线和垂直动力学观测，可能存在结构性矛盾。相比之下，包含近球形暗物质晕的冷暗物质模型能够更自然地解释这些观测结果。统计分析表明，MOND 被超过 $13\sigma$ 的显著性排斥，STVG 也受到超过 $4\sigma$ 的限制。该研究说明，当前银河系动力学更支持暗物质模型。
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江川 于 (北京大学)23/07/2026, 18:10
The dense environment of our Galactic Center (GC) offers a unique laboratory for probing ultralight dark matter (ULDM). We explore the prospect of detecting a scalar ULDM field through its effects on the orbital dynamics of S-stars around the supermassive black hole in the GC, Sgr A*. We consider both linear and quadratic couplings between the real scalar field ϕ and Standard Model particles,...
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奕舟 刘 (北京师范大学)23/07/2026, 18:25
The standard $\Lambda$CDM cosmological model predicts that cosmic filaments are highly clumpy, whereas warm dark matter -- invoked to address small-scale challenges in $\Lambda$CDM -- produces filaments that are noticeably smoother and less structured. In this work, we investigate the potential of Lyman $\alpha$ (Ly$\alpha$) emission to trace cosmic filaments at redshifts $z=2.5$ and $z=4$,...
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磊 祖23/07/2026, 18:40
Dark matter (DM) is a key component of modern cosmology, driving structure formation and influencing the evolution of the Universe. Observations of large-scale structure therefore provide a powerful avenue for probing the fundamental properties of DM. If DM has any non-gravitational interactions, these will modify the thermal and perturbation history of the early Universe, leaving...
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宇根 林 (中国科学院理论物理研究所)23/07/2026, 18:55
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承涛 符23/07/2026, 19:10
While astronomical observations confirm the existence of dark matter, its physical nature remains unknown. For ultralight dark matter (ULDM), its large number density can induce a continuous force on macroscopic targets, allowing detection through precision acceleration measurements. In particular, when the ULDM wavelength matches the target's scale, coherent scattering from all nucleons...
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Junting Huang (Shanghai Jiao Tong University)24/07/2026, 09:40
PandaX is a dark matter and neutrino experiment at the China Jinping
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Underground Laboratory. The experiment uses a dual-phase liquid xenon TPC to search for dark matter particles and neutrinoless double-beta decay, as well as to detect astrophysical neutrinos. In this talk, recent results from the PandaX-4T experiment will be presented, including those from the latest dark matter searches,... -
方周 姜 (北京大学)24/07/2026, 10:00
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韶锋 葛 (李政道研究所)24/07/2026, 10:20
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瑾屏 杨 (南京邮电大学)24/07/2026, 10:40
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加明 施24/07/2026, 11:00
Scalar fields can play the role of dark matter. Based on the scalar field dark matter scenario, an analytical solution to cored dark matter halos can be given by the superposition of the dark matter halo densities. The solution can be used to explain the flat galactic rotation curves, the Tully-Fisher relation as well as the scaling relation of dark matter halo cores. The characteristic...
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Hexu Zhang24/07/2026, 11:50
Classically conformal theories provide a compelling framework for dynamical scale generation in the early Universe. In this talk, I show that classically conformal cosmology can naturally produce primordial black hole dark matter through two distinct mechanisms: delayed vacuum phase transitions in ultra-supercooled first-order phase transitions and tachyonic amplification of curvature...
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Zun Wang (Southeast University)24/07/2026, 12:05
We derive conservative upper limits on the dark-matter–nucleon scattering cross-section for sub-GeV mass dark matter using low-energy chiral effective field theory, independent of UV details. The leading-order hadronic couplings are most severely constrained by the supernova cooling argument via processes such as nucleon bremsstrahlung and pion–DM conversion. We rule out both spin-independent...
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Ruofei Feng (Southeast University)24/07/2026, 12:20
We study the sensitivity of liquid xenon detectors to monochromatic 5.5 MeV solar axions from pp chain in the Sun, for axion masses from 0 to 1 MeV. For the axion-electron coupling, three channels are considered: axion-induced pair production, inverse Compton scattering, and the axio-electric effect; for the axion-photon coupling, we consider the inverse Primakoff process. We compute for the...
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郭栋 张 (山东大学)24/07/2026, 12:35
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春龙 李24/07/2026, 12:50
Searches for spin-dependent interactions mediated by light vector bosons provide a powerful probe of physics beyond the Standard Model. We propose magnetic resonance force microscopy (MRFM) as a new platform for searching for exotic electron-electron interactions mediated by a Z' boson. The proposed system consists of a ferromagnetic mechanical resonator acting as the sensor and a polarized...
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24/07/2026, 13:05
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24/07/2026, 15:30
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Yun-Long Zhang (NAOC, Beijing)
The chiral gravitational wave background (GWB) can be generated by axion‑like fields in the early universe. The conventional notion of an audible axion relies on couplings between axions and gauge fields. Here, we consider an axion-like mechanism coupled to the gravitational topological term, which enables the direct and efficient production of gravitational waves during the...
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qi-quan li (新疆大学)
The thermodynamics of regular black holes has long suffered from a self-consistency problem: the Hawking temperature derived from the first law disagrees with the geometrically defined one, signaling that the thermodynamic quantities obtained in previous studies are unreliable. To resolve this, we construct a rotating ``mother'' black hole whose parameters are initially independent....
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Ran Ding
In this talk, we focus on the radio detection of a high-frequency gravitational-wave background and dark matter annihilation. Based on existing and projected data from the Hongmeng radio survey, we systematically study two processes:
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1）High-frequency gravitational waves, generated by phase transitions and other new physics, are converted into radio photons via the inverse Gertsenshtein effect... -
郭栋 张 (山东大学-前沿交叉科学青岛研究院)
Q-balls are non-topological solitons and promising dark matter candidates. Their potential astrophysical signatures motivate a thorough understanding of their wave scattering properties. The central contribution of this work is an analytical elucidation of the multi-peak structure in Q-ball superradiance. By discretizing the background Q-ball and applying resummation techniques, the...
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江浩 于 (中国科学院理论物理研究所)
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Leo Qiyuan Hu (City University of Hong Kong)
Recent results from Galactic surveys indicate that the Milky Way’s gravitational potential arises from a triaxial, rotated matter distribution, implying that the dark matter (DM) halo may share this shape. In this talk, I will present that the Galactic Center Excess (GCE) observed in Fermi-LAT gamma-ray data is compatible with a triaxial DM halo, including both untilted and tilted...
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Jiaxin Han (Shanghai Jiao Tong University)
Existing measurements of the Milky Way halo mass often involve
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unjustified assumptions about the tracer distribution that can lead to
significant biases, resulting a divergence of the reported halo mass in
the literature. In this talk I will show that the halo mass can be
derived with minimal assumptions by essentially only requiring the
tracers to be in a steady state. The primary... -
Prof. 鹏顺 罗 (华中科技大学)
While astronomical observations confirm the existence of dark matter, its physical nature remains unknown. For ultralight dark matter (ULDM), its large number density can induce a continuous force on macroscopic targets, allowing detection through precision acceleration measurements. In particular, when the ULDM wavelength matches the target's scale, coherent scattering from all nucleons...
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Dr 宇根 林
Supernova cooling provides a powerful probe of physics beyond the Standard Model (SM), in particular for new, light states interacting feebly with SM particles. In this work, we investigate for the first time the production of fermionic dark matter (DM) via the neutrino-devouring process inside a core-collapse supernova, which contributes to the excessive cooling. By incorporating...
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盼盼 王 (重庆大学)
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联福 韦 (西南交通大学)
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一凡 陈
致密天体附近的极轻玻色子可以形成引力束缚态。其中一部分可通过提取黑洞自转能量而发生指数增长（黑洞超辐射），也可由环境中的背景波经弛豫过程逐渐积累。这些束缚态的场强可增长至接近普朗克尺度，从而产生类似于早期宇宙中的非微扰现象，并带来远强于本地暗物质探测的观测信号，包括黑洞成像中的电磁学特征以及反映周围环境性质的引力波印记。报告将介绍两个典型的强场现象。首先，吸积供给的轴子云可进入一种饱和态，此时场强接近轴子衰变常数，轴子的相对论性辐射与吸积过程达到平衡，其辐射谱中携带着轴子自相互作用的信息。其次，当具有非对角耦合的高能中微子穿过致密标量场背景时，可发生参数共振，进而导致观测到的中微子味比例产生可测量的畸变。
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