14 papers
Challenges in Binary Pulsar Timing Detection of Dark Matter Subhalos
Zheng-Long Wang, Zi-Qing Xia, Yue-Lin Sming Tsai +1
Recently, binary pulsar timing has been proposed as a viable probe of dark matter subhalos with masses of in the solar neighborhood. We present a comprehensi…
Milky Way Dynamics Favor Dark Matter over Modified Gravity Models
Zheng-long Wang, Yue-Lin Sming Tsai, Lan Zhang +5
Modified gravity theories such as Modified Newtonian Dynamics (MOND) and Scalar-Tensor-Vector Gravity (STVG) have been proposed as alternatives to dark matter, but decisive tests h…
Cosmology of Inelastic Self-Interacting Dark Matter: Linear Evolution and Observational Constraints
Xin-Chen Duan, Yue-Lin Sming Tsai, Ziwei Wang
We study the linear cosmological evolution of inelastic self-interacting dark matter in a two-component dark sector with a small mass splitting, assuming thermal initial conditions…
Probing Cosmic-Ray-Boosted and Supernova-Sourced Sub-GeV Dark Matter with Paleo-Detectors
Xiaoyong Chu, Yue-Lin Sming Tsai, Mei-Wen Yang
Astrophysical dark matter particles with masses well below GeV-scale can be difficult to detect using conventional nuclear recoil experiments due to their low velocities in our Mil…
Self-Interacting Dark Matter with Mass Segregation: A Unified Explanation of Dwarf Cores and Small-Scale Lenses
Daneng Yang, Yi-Zhong Fan, Siyuan Hou +1
In two-component self-interacting dark matter (SIDM) models with inter-species interactions, mass segregation arises naturally from collisional relaxation, enhancing central densit…
Flux-ratio anomalies in cusp quasars reveal dark matter beyond CDM
Siyuan Hou, Shucheng Xiang, Yue-Lin Sming Tsai +7
Strongly lensed quasars in cusp configurations provide a uniquely sensitive probe of small-scale dark matter structure. Using the largest microlensing-free flux ratios for 17 quadr…