Dependence of the WIMP Angular Kinetic-Energy Distribution on the Solar Galactic Orbital Velocity

Dark Kinetic Heating of Neutron Stars and An Infrared Window On WIMPs, SIMPs, and Pure Higgsinos

We identify a largely model-independent signature of dark matter interactions with nucleons and electrons. Dark matter in the local galactic halo, gravitationally accelerated to over half the speed of light, scatters against and deposits kinetic energy into neutron stars, heating them to infrared blackbody temperatures. The resulting radiation could potentially be detected by the James Webb Space Telescope, the Thirty Meter Telescope, or the European Extremely Large Telescope. This mechanism also produces optical emission from neutron stars in the galactic bulge, and X-ray emission near the ga…

对围绕恒星级原初黑洞的WIMP微型尖峰的观测约束

Observational Constraints on WIMP Mini-Spikes Around Stellar-Mass Primordial Black Holes with 17 Years of Fermi-LAT Data

利用17年Fermi-LAT数据研究暗物质本质，通过分析恒星级黑洞周围密度增强现象，排除WIMP湮灭截面的热 relic 值，发现Fermi-LAT对10个太阳质量微型尖峰的敏感性。

Secluded WIMPs, QED with massive photons, and the galactic center gamma-ray excess

We propose to investigate a secluded WIMP dark matter model consisting of neutral fermions as the dark matter candidate and a Proca-Wentzel (PW) field as a mediator. In the model that we consider here, dark matter WIMPs interact with standard model (SM) particles only through the PW field of ~ MeV -- multi-GeV mass particles. The interactions occur via an U(1)' mediator, V_μ', which couples to the SM by kinetic mixing with U(1) hypercharge bosons, B_μ. One important difference between our model and other such models in the literature is the absence of an extra singlet scalar, so that the param…

Search for dark matter from the center of the Earth with 8 years of IceCube data

The nature of Dark Matter (DM) remains one of the most important unresolved questions of fundamental physics. Many models, including Weakly Interacting Massive Particles (WIMPs), assume DM to be a particle and predict a weak coupling with Standard Model matter. If DM particles can scatter off nuclei in the vicinity of a massive object such as a star or a planet, they may lose kinetic energy and become gravitationally trapped in the center of such objects, including Earth. As DM accumulates in the center of the Earth, self-annihilation of WIMPs into Standard Model particles can result in an exc…

双中子星并合产生的怪物激波与耀斑所形成的快速射电暴：双脉冲星的动力学模型

Fast Radio Bursts from Monster Shocks and Flares of Inspiraling Binary Neutron Stars: A Kinetic Model for Double Pulsar

该研究提出双中子星并合的三维粒子模拟动力学模型，发现轨道运动产生的快磁声波是相干射电辐射的来源，为快速射电暴的产生提供了新的驱动机制。

利用IceCube在地球中心寻找暗物质湮灭

Search for dark matter annihilations in the center of the Earth with IceCube

基于10年IceCube数据搜寻地球中心暗物质湮灭产生的中微子，在10 GeV至10 TeV质量范围内分析多种WIMP湮灭通道，在 $m_χ$ > 100 GeV 时取得世界领先结果。