78 citations · 187 across the 15 of their papers we have counts for
15 papers
Small-Scale Clustering of Primordial Black Holes: The Little Red Dot Mass Function and the High-Redshift Galaxy Tension
Borui Zhang, Wei-Xiang Feng, Haipeng An
Supermassive black holes (SMBHs) in "little red dots" (LRDs) discovered by the James Webb Space Telescope (JWST) may result from runaway mergers of primordial black holes (PBHs) in…
Smoluchowski Coagulation Equation and the Evolution of Primordial Black Hole Clusters
Borui Zhang, Wei-Xiang Feng, Haipeng An
In arXiv:2507.07171, we demonstrate that the high-redshift supermassive black holes in the so-called "little red dots" discovered by James Webb Space Telescope (JWST) can be explai…
Black Hole Cold Brew: Fermi Degeneracy Pressure
Wei-Xiang Feng, Hai-Bo Yu, Yi-Ming Zhong
We investigate the dynamical instability of a self-gravitating thermal system in the quantum regime, where Fermi degeneracy pressure becomes significant. Using a truncated Fermi-Di…
Little Red Dots from Small-Scale Primordial Black Hole Clustering
Borui Zhang, Wei-Xiang Feng, Haipeng An
The James Webb Space Telescope (JWST) observations have identified a class of compact galaxies at high redshifts (), dubbed "little red dots" (LRDs). The…
Dark Bondi Accretion Aided by Baryons and the Origin of JWST Little Red Dots
Wei-Xiang Feng, Hai-Bo Yu, Yi-Ming Zhong
The gravothermal core collapse of self-interacting dark matter halos provides a mechanism for seeding supermassive black holes in the early Universe. We show that the collapse of a…
Formation of the Little Red Dots from the Core-collapse of Self-interacting Dark Matter Halos
Fangzhou Jiang, Zixiang Jia, Haonan Zheng +5
We present a statistical study of black hole (BH) formation and growth seeded by gravothermal core collapse of self-interacting dark matter (SIDM) halos at high redshift, using a c…
Gravitational Waves from Primordial Black Hole Dark Matter Spikes
Wei-Xiang Feng, Simeon Bird, Hai-Bo Yu
The origin of the binary black hole mergers observed by LIGO--Virgo--KAGRA remains an open question. We calculate the merger rate from primordial black holes (PBHs) within the dens…
Gravothermal Phase Transition, Black Holes and Space Dimensionality
Wei-Xiang Feng
In the framework of gravothermal evolution of an ideal monatomic fluid, I examine the dynamical instability of the fluid sphere in (+1) dimensions by exploiting Chandrasekhar's…
Self-interacting Dark Scalar Spikes around Black Holes via Relativistic Bondi Accretion
Wei-Xiang Feng, Alessandro Parisi, Chian-Shu Chen +1
We consider the spike mass density profile in a dark halo by self-consistently solving the relativistic Bondi accretion of dark matter onto a non-spining black hole of mass . We…
On the Dynamical Instability of Monatomic Fluid Spheres in (N+1)-Dimensional Spacetime
Wei-Xiang Feng
In this note, I derive the Chandrasekhar instability of a fluid sphere in (+1)-dimensional Schwarzschild-Tangherlini spacetime and take the homogeneous (uniform energy density)…
Dynamical Instability of Collapsed Dark Matter Halos
Wei-Xiang Feng, Hai-Bo Yu, Yi-Ming Zhong
A self-interacting dark matter halo can experience gravothermal collapse, resulting in a central core with an ultrahigh density. It can further contract and collapse into a black h…
Seeding Supermassive Black Holes with Self-Interacting Dark Matter: A Unified Scenario with Baryons
Wei-Xiang Feng, Hai-Bo Yu, Yi-Ming Zhong
Observations show that supermassive black holes (SMBHs) with a mass of exist when the Universe is just of its current age. We propose a scenario where a se…
Astrophysical Evidence of Wakefield Acceleration in Galactic and Extragalactic Jets via Gamma Rays and UHECRs
Gregory B. Huxtable, Noor Eltawil, Wei-Xiang Feng +4
We present six case studies from a broad mass range ( ) of astrophysical objects, each of which exhibit signs of jets and emit intense high energy gamma rays ($>…
The Buchdahl Stability Bound in Eddington-inspired Born-Infeld Gravity
Wei-Xiang Feng, Chao-Qiang Geng, Ling-Wei Luo
We give the Buchdahl stability bound in Eddington-inspired Born-Infeld (EiBI) gravity. We show that this bound depends on an energy condition controlled by the model parameter .…
Equation of State of Neutron Stars with Junction Conditions in the Starobinsky Model
Wei-Xiang Feng, Chao-Qiang Geng, W. F. Kao +1
We study the Starobinsky or model of for neutron stars with the structure equations represented by the coupled differential equations and the \emph{polytropic}…