40 citations · 217 across the 25 of their papers we have counts for
25 papers
Reassessing Evidence for Dark-Sector Interactions with Dynamical Dark Energy and DESI DR2
Jincheng Wang, Hongwei Yu, Puxun Wu
Recent baryon acoustic oscillation measurements from DESI Data Release 2, when combined with CMB and supernova data, strengthen the motivation for exploring departures from CDM…
Estimating Cosmological Parameters from Localized Fast Radio Bursts: A Method for Removing Milky Way Dispersion-Measure Contributions
Yuchen Zhang, Yang Liu, Hongwei Yu +1
Fast radio bursts (FRBs) are emerging as powerful probes for cosmology. However, cosmological inference based on FRB dispersion measures (DMs) is limited by uncertainties in the Mi…
Primordial Black Holes from Vector-Induced Curvature Perturbations Sourced by Primordial Magnetic Fields
Chang Han, Zu-Cheng Chen, Hongwei Yu +1
Generating an appreciable abundance of primordial black holes (PBHs) requires a substantial enhancement of primordial curvature perturbations on small scales. In this work, we prop…
Phantom-Divide Crossing in Exponentially Coupled Quintessence and the Role of Neutrino-Mass Freedom
Jincheng Wang, Hongwei Yu, Puxun Wu
We investigate a quintessence dark-energy model with an exponential potential and an exponential coupling to cold dark matter (CDM), hereafter referred to as the CQ-EXP model, usin…
The Steep-spectrum Radio-loud AGN Luminosity Function and Its Implications for Black Hole Growth and Star Formation
Wenjie Wang, Zunli Yuan, B. Šlaus +2
We study the cosmic evolution of radio-loud active galactic nuclei (AGNs) using a beaming-minimized sample of 4{,}555 steep-spectrum sources over , compiled from the…
Photon rest mass from localized fast radio bursts with improved distribution of dispersion measure from extragalactic gas
Yuchen Zhang, Yang Liu, Hongwei Yu +1
The assumption that photons are massless is a foundational postulate of modern physics, yet it remains subject to experimental verification. Fast radio bursts (FRBs), with their co…
Revisiting the 150 MHz Radio Luminosity Function of Star-Forming Galaxies with LOFAR Deep Fields through a Refined Statistical Framework
Wenjie Wang, Zunli Yuan, Hongwei Yu +3
We present a comprehensive analysis of the 150~MHz radio luminosity function (LF) of star-forming galaxies (SFGs) using deep observations from the LOFAR Two-metre Sky Survey in the…
Revisiting cosmic acceleration with DESI BAO
Jincheng Wang, Hongwei Yu, Puxun Wu
We revisit the evolution of cosmic acceleration in a spatially flat CDM universe, in which the equation of state of dark energy takes the CPL parametrization, using the lat…
Primordial Gravitational Waves in Parity-violating Symmetric Teleparallel Gravity
Rongrong Zhai, Chengjie Fu, Xiangyun Fu +2
In this paper, we investigate the inflationary phenomenology of parity-violating (PV) extensions of symmetric teleparallel gravity by applying this PV gravity theory to axion infla…
Constraining the Baryon Fraction in Extragalactic Diffuse Ionized Gas with 124 Localized Fast Radio Bursts
Yang Liu, Yuchen Zhang, Jun-Jie Wei +3
Fast radio bursts (FRBs) are increasingly recognized as powerful cosmological tools for constraining the baryon fraction in extragalactic diffuse ionized gas, presenting a promisin…
Probability density function for dispersion measure of fast radio burst from extragalactic medium
Yuchen Zhang, Yang Liu, Hongwei Yu +1
Fast Radio Bursts (FRBs) have emerged as powerful probes in cosmology. An optimized method was recently proposed to extract the cosmic baryon density from localized FRBs by maximiz…
Infrared Behavior of Induced Gravitational Waves from Isocurvature Perturbations
Chang Han, Zu-Cheng Chen, Hongwei Yu +1
Induced gravitational waves provide a powerful probe of primordial perturbations in the early universe through their distinctive spectral properties. We analyze the spectral energy…
Alleviating the Hubble-constant tension and the growth tension via a transition of absolute magnitude favored by the Pantheon+ sample
Yang Liu, Hongwei Yu, Puxun Wu
We establish a cosmological-model-independent method to extract the apparent magnitude and its derivative at different redshifts from the Pantheon+ type Ia supernova sample, and fi…
Constraints on Cosmological Models from Quasars Calibrated with Type Ia Supernova by a Gaussian Process
Haixiang Zhang, Yang Liu, Hongwei Yu +3
In this paper, we use quasars calibrated from type Ia supernova (SN Ia) to constrain cosmological models. We consider three different X-ray luminosity () - ultraviolet lumin…
Resonant amplification of curvature perturbations in inflation model with periodical derivative coupling
Li-Yang Chen, Hongwei Yu, Puxun Wu
In this paper, we introduce a weak, transient and periodical derivative coupling between the inflaton field and gravity, and find that the square of the sound speed of the curvatur…
NANOGrav hints for first-order confinement-deconfinement phase transition in different QCD-matter scenarios
Zu-Cheng Chen, Shou-Long Li, Puxun Wu +1
Recent observations from several pulsar timing array (PTA) collaborations have unveiled compelling evidence for a stochastic signal in the nanohertz band. This signal aligns remark…
Observations favor the redshift-evolutionary - relation of quasars from copula
Bao Wang, Yang Liu, Hongwei Yu +1
We compare, with data from the quasars, the Hubble parameter measurements, and the Pantheon+ type Ia supernova, three different relations between X-ray luminosity () and ultra…
Constraints on cosmic star formation history via a new modeling of the radio luminosity function of star-forming galaxies
Wenjie Wang, Zunli Yuan, Hongwei Yu +1
Radio wavelengths offer a unique possibility to trace the total star-formation rate (SFR) in galaxies, both obscured and unobscured. To probe the dust-unbiased star-formation histo…
Power spectrum with growth for primordial black holes
Rongrong Zhai, Hongwei Yu, Puxun Wu
The decrease of both the rolling speed of the inflaton and the sound speed of the curvature perturbations can amplify the curvature perturbations during inflation so as to generate…
Probing Cosmic Background Dynamics with a Cosmological-model-independent Method
Yang Liu, Bao Wang, Hongwei Yu +1
The Hubble constant tension has emerged as the most serious crisis in modern cosmology, potentially indicating that the CDM model may not describe our universe accurately.…
Cosmological Complexity from initial thermal state
Jincheng Wang, Hongwei Yu, Puxun Wu
The cosmological scalar perturbations should satisfy the thermal distribution at the beginning of inflation since the cosmic temperature is presumably very high. In this paper, we…
Redshift-evolutionary X-ray and UV luminosity relation of quasars from Gaussian copula
Bao Wang, Yang Liu, Zunli Yuan +3
We construct a three-dimensional and redshift-evolutionary X-ray and ultraviolet () luminosity relation for quasars from the powerful statistic tool called copula, and…
Cosmological-model-independent determination of Hubble constant from fast radio bursts and Hubble parameter measurements
Yang Liu, Hongwei Yu, Puxun Wu
We establish a cosmological-model-independent method to determine the Hubble constant from the localized fast radio bursts (FRBs) and the Hubble parameter measurements from c…
Gamma ray burst constraints on cosmological models from the improved Amati correlation
Yang Liu, Nan Liang, Xiaoyao Xie +3
An improved Amati correlation was constructed in (ApJ 931 (2022) 50) by us recently. In this paper, we further study constraints on the CDM and CDM models from the gamma ray…