273 citations · 1.5k across the 39 of their papers we have counts for
24 papers · 1 filter
Feeding the Void: Co-evolution of the SIDM-seeded Black Hole and the dark halo after core-collapse
Zhichao Carton Zeng, Annika H. G. Peter, Louis E. Strigari +3
While the gravothermal collapse of self-interacting dark matter (SIDM) halos provides a compelling mechanism for seeding supermassive black holes (BHs), the post-collapse macroscop…
The Sensitivity of Substructure Lensing to SIDM Core-collapse Model Variation
Charlie Mace, Birendra Dhanasingham, Zhichao Carton Zeng +4
Strong gravitational lensing has emerged as a powerful probe of dark matter substructure, and shows particularly strong promise as a test of self-interacting dark matter (SIDM). Th…
A Comparison of Galacticus and COZMIC WDM Subhalo Populations
Jack Lonergan, Andrew Benson, Xiaolong Du
We present a comparative analysis of warm dark matter (WDM) subhalo populations generated by the semi-analytic model {\sc Galacticus} and the COZMIC suite of dark matter-only -b…
A Semi-Analytic model for Effects of Fuzzy Dark Matter Granule Perturbations on Orbital Motion
Yu Zhao, Andrew Benson, Xiaolong Du
In fuzzy dark matter scenarios, the quantum wave nature of ultralight axion-like particles generates stochastic density fluctuations inside dark matter halos. These fluctuations, k…
Faster than SAM: An empirical model for the tidal evolution of dark matter substructure around strong gravitational lenses
Xiaolong Du, Daniel Gilman, Tommaso Treu +2
Strong gravitational lenses enable direct inference of halo abundance and internal structure, which in turn enable constraints on the nature of dark matter and the primordial matte…
COZMIC. I. Cosmological Zoom-in Simulations with Initial Conditions Beyond Cold Dark Matter
Ethan O. Nadler, Rui An, Vera Gluscevic +2
We present 72 cosmological dark matter-only -body zoom-in simulations with initial conditions beyond cold, collisionless dark matter (CDM), as the first installment of the COZMI…
Intergalactic medium rotation measure of primordial magnetic fields
Salome Mtchedlidze, Paola Domínguez-Fernández, Xiaolong Du +5
The Faraday rotation effect, quantified by the Rotation Measure (RM), is a powerful probe of the large-scale magnetization of the Universe - tracing magnetic fields not only on gal…
A quantitative comparison between velocity dependent SIDM cross sections constrained by the gravothermal and isothermal models
Shengqi Yang, Fangzhou Jiang, Andrew Benson +6
One necessary step for probing the nature of self-interacting dark matter (SIDM) particles with astrophysical observations is to pin down any possible velocity dependence in the SI…
Soliton Merger Rates and Enhanced Axion Dark Matter Decay
Xiaolong Du, David J. E. Marsh, Miguel Escudero +4
Solitons are observed to form in simulations of dark matter (DM) halos consisting of bosonic fields. We use the extended Press-Schechter formalism to compute the mass function of s…
Inflationary and phase-transitional primordial magnetic fields in galaxy clusters
Salome Mtchedlidze, Paola Domínguez-Fernández, Xiaolong Du +4
Primordial magnetic fields (PMFs) are possible candidates for explaining the observed magnetic fields in galaxy clusters. Two competing scenarios of primordial magnetogenesis have…
Symphony: Cosmological Zoom-in Simulation Suites over Four Decades of Host Halo Mass
Ethan O. Nadler, Philip Mansfield, Yunchong Wang +9
We present Symphony, a compilation of cosmological, cold-dark-matter-only zoom-in simulations spanning four decades of host halo mass, from $10^{15}~M_{\mathrm{\o…
A semi-analytic study of self-interacting dark-matter haloes with baryons
Fangzhou Jiang, Andrew Benson, Philip F. Hopkins +8
We combine the isothermal Jeans model and the model of adiabatic halo contraction into a simple semi-analytic procedure for computing the density profile of self-interacting dark-m…
Quantum fluctuations masquerade as halos: Bounds on ultra-light dark matter from quadruply-imaged quasars
Alexander Laroche, Daniel Gilman, Xinyu Li +2
Ultra-light dark matter (ULDM) refers to a class of theories, including ultra-light axions, in which particles with mass comprise a significant fraction…
Gravothermal solutions of SIDM halos: mapping from constant to velocity-dependent cross section
Shengqi Yang, Xiaolong Du, Zhichao Carton Zeng +4
The scale-free gravothermal fluid formalism has long proved effective in describing the evolution of self-interacting dark matter halos with a constant dark matter particle cross s…
Core-collapse, evaporation and tidal effects: the life story of a self-interacting dark matter subhalo
Zhichao Carton Zeng, Annika H. G. Peter, Xiaolong Du +5
Self-interacting dark matter (SIDM) cosmologies admit an enormous diversity of dark matter (DM) halo density profiles, from low-density cores to high-density core-collapsed cusps.…
Diluted Axion Star Collisions with Neutron Stars
Yang Bai, Xiaolong Du, Yuta Hamada
Diluted axion star, a self-gravitating object with the quantum pressure balancing gravity, has been predicted in many models with a QCD axion or axion-like particle. It can be form…
Evolution of primordial magnetic fields during large-scale structure formation
Salome Mtchedlidze, Paola Domínguez-Fernández, Xiaolong Du +5
Primordial magnetic fields could explain the large-scale magnetic fields present in the Universe. Inflation and phase transitions in the early Universe could give rise to such fiel…
Relaxation times for Bose-Einstein condensation by self-interaction and gravity
Jiajun Chen, Xiaolong Du, Erik Lentz +1
In this paper, we study the Bose-Einstein condensation of a scalar field with an attractive self-interaction, with or without gravitational interactions. We confirm through full dy…
Dark Matter Constraints from a Unified Analysis of Strong Gravitational Lenses and Milky Way Satellite Galaxies
Ethan O. Nadler, Simon Birrer, Daniel Gilman +5
Joint analyses of small-scale cosmological structure probes are relatively unexplored and promise to advance measurements of microphysical dark matter properties using heterogeneou…
New insights into the formation and growth of boson stars in dark matter halos
Jiajun Chen, Xiaolong Du, Erik W. Lentz +2
This work studies the formation and growth of boson stars and their surrounding miniclusters by gravitational condensation using non-linear dynamical numerical methods. Fully dynam…
A new calibration method of sub-halo orbital evolution for semi-analytic models
Shengqi Yang, Xiaolong Du, Andrew J. Benson +2
Understanding the non-linear dynamics of satellite halos (a.k.a. "sub-halos") is important for predicting the abundance and distribution of dark matter substructures and satellite…
Constraints on the mass-concentration relation of cold dark matter halos with 11 strong gravitational lenses
Daniel Gilman, Xiaolong Du, Andrew Benson +3
The mass-concentration relation of dark matter halos reflects the assembly history of objects in hierarchical structure formation scenarios, and depends on fundamental quantities i…
Warm dark matter chills out: constraints on the halo mass function and the free-streaming length of dark matter with 8 quadruple-image strong gravitational lenses
Daniel Gilman, Simon Birrer, Anna Nierenberg +3
The free-streaming length of dark matter depends on fundamental dark matter physics, and determines the abundance and concentration of dark matter halos on sub-galactic scales. Usi…
Substructure of fuzzy dark matter haloes
Xiaolong Du, Christoph Behrens, Jens C. Niemeyer
We derive the halo mass function (HMF) for fuzzy dark matter (FDM) by solving the excursion set problem explicitly with a mass-dependent barrier function, which has not been done b…