79 citations · 589 across the 25 of their papers we have counts for
25 papers
Structure-wide dark matter density depletion induced by local degeneracies
Yifei Yang, Weikang Lin
The longstanding cusp-core problem--the discrepancy between the steep central density cusps predicted by cold dark matter (DM) simulations and certain shallow cores observed in dwa…
Cosmology of Single Species Hidden Dark Matter
Weikang Lin, Xingang Chen, Himanish Ganjoo +2
Cosmology and astrophysics provide various ways to study the properties of dark matter even if they have negligible non-gravitational interactions with the Standard Model particles…
Electroweak axion in light of GRB221009A
Weikang Lin, Tsutomu T. Yanagida
Recently, arXiv:2210.05659 shows that a photon-axion like particle (ALP) oscillation can boost the survival rate of the high energy photons associated with the observed GRB221009A…
The anomalous shift of the weak boson mass and the quintessence electroweak axion
Weikang Lin, Tsutomu T. Yanagida, Norimi Yokozaki
One of the simplest ways to account for the observed W-boson mass shift is to introduce the triplet Higgs boson with zero hypercharge, whose vacuum expectation value is a…
The Effects Of Relativistic Hidden Sector Particles on the Matter Power Spectrum
Himanish Ganjoo, Adrienne L. Erickcek, Weikang Lin +1
If dark matter resides in a hidden sector minimally coupled to the Standard Model, another particle within the hidden sector might dominate the energy density of the early universe…
Consistency of the string inspired electroweak axion with cosmic birefringence
Weikang Lin, Tsutomu T. Yanagida
We revisit the constraint from the recently reported cosmic birefringence on axion-like particles with a general decay constant. A particular attention is paid to the naturalness o…
Confronting the Galactic 511 keV emission with gauge boson dark matter
Weikang Lin, Tsutomu Yanagida
The gauge symmetry motivated from the successful generation of the seesaw mechanism and leptogenesis. We show that if the gauge boson constitutes a small fraction of th…
Dynamically Induced Topological Inflation
Gongjun Choi, Weikang Lin, Tsutomu T. Yanagida
We propose an inflation model in which the inflationary era is driven by the strong dynamics of gauge theory. The quark condensation in the confined phase of gauge…
Neutrino astronomy as a probe of physics beyond the Standard Model: decay of sub-MeV - gauge boson dark matter
Weikang Lin, Luca Visinelli, Donglian Xu +1
The symmetry, the essential component in the seesaw mechanism and leptogenesis, is naturally equipped with a massive gauge boson. If this gauge boson is the…
Discrete -symmetry, Various Energy Scales and Gravitational Waves
Gongjun Choi, Weikang Lin, Tsutomu T. Yanagida
We present a supersymmetric model where energy scales of a discrete -symmetry breaking () and cosmic inflation are commonly attributed to the confinement scale of a hidd…
Cosmic Birefringence and Electroweak Axion Dark Energy
Gongjun Choi, Weikang Lin, Luca Visinelli +1
Taking the recently reported non-zero rotation angle of the cosmic microwave background (CMB) linear polarization as the hint for a pseudo Nambu-Goldston…
Early-Universe-Physics Insensitive and Uncalibrated Cosmic Standards: Constraints on and Implications for the Hubble Tension
Weikang Lin, Xingang Chen, Katherine J. Mack
To further shed light on whether pre-recombination models can resolve the Hubble tension, we explore constraints on the cosmic background evolution that are insensitive to early-un…
Cosmological discordances III: more on measure properties, Large-Scale-Structure constraints, the Hubble constant and Planck
Cristhian Garcia-Quintero, Mustapha Ishak, Logan Fox +1
Consistency between cosmological data sets is essential for ongoing and future cosmological analyses. We first investigate the questions of stability and applicability of some mome…
Investigating the Hubble Constant Tension -- Two Numbers in the Standard Cosmological Model
Weikang Lin, Katherine J. Mack, Liqiang Hou
The current Hubble constant tension is usually presented by comparing constraints on only. However, the post-recombination background cosmic evolution is determined by two pa…
A Bayesian interpretation of inconsistency measures in cosmology
Weikang Lin, Mustapha Ishak
Measures of discordance between datasets have become an essential part of cosmological analyses. It is important to accurately evaluate the significance of such discordances when p…
Modified Gravity and Dark Energy models Beyond CDM Testable by LSST
Mustapha Ishak, Tessa Baker, Philip Bull +8
One of the main science goals of the Large Synoptic Survey Telescope (LSST) is to uncover the nature of cosmic acceleration. In the base analysis, possible deviations from the Lamb…
Cosmological discordances II: Hubble constant, Planck and large-scale-structure data sets
Weikang Lin, Mustapha Ishak
We examine systematically the (in)consistency between cosmological constraints as obtained from various current data sets of the expansion history, Large Scale Structure (LSS), and…
Effects of Self-Calibration of Intrinsic Alignment on Cosmological Parameter Constraints from Future Cosmic Shear Surveys
Ji Yao, Mustapha Ishak, Weikang Lin +1
Intrinsic alignments (IA) of galaxies have been recognized as one of the most serious contaminants to weak lensing. These systematics need to be isolated and mitigated in order for…
Cosmological discordances: a new measure, marginalization effects, and application to geometry vs growth current data sets
Weikang Lin, Mustapha Ishak
The continuous progress toward more precise cosmological surveys and experiments has galvanized recent interest into consistency tests on cosmological parameters and models. At the…
Testing gravity theories using tensor perturbations
Weikang Lin, Mustapha Ishak
Primordial gravitational waves constitute a promising probe of the very early Universe and the laws of gravity. We study in this work changes to tensor-mode perturbations (TMPs) th…
Averaged universe confronted with cosmological observations: A fully covariant approach
Tharake Wijenayake, Weikang Lin, Mustapha Ishak
One of the outstanding problems in general relativistic cosmology is that of the averaging. That is, how the lumpy universe that we observe at small scales averages out to a smooth…
Ultra faint dwarf galaxies: an arena for testing dark matter versus modified gravity
Weikang Lin, Mustapha Ishak
The scenario consistent with a wealth of observations for the missing mass problem is that of weakly interacting dark matter particles. However, arguments or proposals for a Newton…
Breaking the EOS-Gravity Degeneracy with Masses and Pulsating Frequencies of Neutron Stars
Weikang Lin, Bao-An Li, Lie-Wen Chen +2
A thorough understanding of many astrophysical phenomena associated with compact objects requires reliable knowledge about both the equation of state (EOS)of super-dense nuclear ma…
Imprints of Nuclear Symmetry Energy on Properties of Neutron Stars
Bao-An Li, Lie-Wen Chen, Michael Gearheart +8
Significant progress has been made in recent years in constraining the density dependence of nuclear symmetry energy using terrestrial nuclear laboratory data. Around and below the…