40 citations · 241 across the 24 of their papers we have counts for
25 papers
Tracing cosmic star formation history through radio continuum spectral energy distribution and non-thermal emission
Fangxia An, Fatemeh S. Tabatabaei, Nick Seymour +11
As a tracer of massive star formation unaffected by dust, the radio continuum emission provides a unique window into the formation of the first stars and galaxies in the Universe.…
Improving Radio Source Count Estimation Using Kernel Density Estimation
Luozhenhan Liu, Zunli Yuan, Wenjie Wang +1
Radio source counts provide a fundamental census of cosmic radio emission, yet their estimation is usually based on coarse histograms that suffer from bin-choice bias, boundary eff…
Shape-Preserving Evolution of the Global Ultraviolet Quasar Luminosity Function to
Wenjie Wang, Zunli Yuan, Yu Luo +1
We present a global unbinned-likelihood analysis of the rest-frame ultraviolet (UV) quasar luminosity function (QLF) over , using a final analysis sample of 70,960…
Multi-Period Fermi-LAT and LHAASO Constraints on Axion-Like Particles from Mrk 421 via Profile Likelihood with Gaussian Copula Correlation
Longhua Qin, Jiancheng Wang, Chuyuan Yang +9
We present a joint multi-period analysis of axion-like particles (ALPs) using five sets of simultaneous Fermi-LAT and LHAASO observations of the TeV blazar Mrk~421. Photon-ALP osci…
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…
A flexible method for estimating luminosity functions via Kernel Density Estimation -- III. Extending to Multiple Flux-Limited Samples
Zunli Yuan, Chuanqi Li, Wenjie Wang +2
As the third paper in a series regarding the estimation of luminosity functions (LFs) via kernel density estimation (KDE), we present a further generalization of our framework by e…
Revisiting Very High Energy Gamma-Ray Absorption in Cosmic Propagation under the Combined Effects of Axion-Like Particles and Lorentz Invariance Violation
Longhua Qin, Jiancheng Wang, Chuyuan Yang +9
Very-high-energy (VHE; GeV) gamma rays are expected to experience strong attenuation during cosmological propagation due to electron-positron pair production on the…
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…
Morpho-Photometric Classification of KiDS DR5 Sources Based on Neural Networks: A Comprehensive Star-Quasar-Galaxy Catalog
Hai-Cheng Feng, Rui Li, Nicola R. Napolitano +14
We present a novel multimodal neural network (MNN) for classifying astronomical sources in multiband ground-based observations, from optical to near infrared, to separate sources i…
Quasar winds caught on acceleration and deceleration
Weimin Yi, P. B. Hall, Zunlin Yuan +5
We present an observational study of wind acceleration based on four low-ionization broad absorption line (LoBAL) quasars (J0136, J1238, J1259, J1344). J0136 and J1344 (group-1) ar…
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…
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…
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…
The improved Amati correlations from Gaussian copula
Yang Liu, Fuyong Chen, Nan Liang +3
In this paper, we obtain two improved Amati correlations of the Gamma-Ray burst (GRB) data via a powerful statistical tool called copula. After calibrating, with the low-redshift G…
A flexible method for estimating luminosity functions via Kernel Density Estimation -- II. Generalization and Python implementation
Zunli Yuan, Xibin Zhang, Jiancheng Wang +2
We propose a generalization of our previous KDE (kernel density estimation) method for estimating luminosity functions (LFs). This new upgrade further extend the application scope…
A flexible method for estimating luminosity functions via Kernel Density Estimation
Zunli Yuan, Matt J. Jarvis, Jiancheng Wang
We propose a flexible method for estimating luminosity functions (LFs) based on kernel density estimation (KDE), the most popular nonparametric density estimation approach develope…
Determining the core radio luminosity function of radio AGNs via copula
Zunli Yuan, Jiancheng Wang, D. M. Worrall +2
The radio luminosity functions (RLFs) of active galactic nuclei (AGNs) are traditionally measured based on total emission, which doesn't reflect the current activity of the central…
Using the Markov Chain Monte Carlo method to study the physical properties GeV-TeV BL Lac objects
Longhua Qin, Jiancheng Wang, Chuyuan Yang +3
We fit the spectral energy distributions (SEDs) of 46 GeV - TeV BL Lac objects in the frame of leptonic one-zone synchrotron self-Compton (SSC) model and investigate the physical p…
Constraining the redshifts of TeV BL Lac objects
Longhua Qin, Jiancheng Wang, Dahai Yan +3
We present a model-dependent method to estimate the redshifts of three TeV BL Lac objects (BL Lacs) through fltting their (quasi-) simultaneous multi-waveband spectral energy distr…
A mixture evolution scenario of the AGN radio luminosity function. II. Do low- and high-power radio-loud AGNs evolve differently?
Zunli Yuan, Jiancheng Wang, Ming Zhou +2
Following previous work, we further confirm that the cosmic evolution of steep-spectrum radio-loud AGNs (active galactic nuclei) can be reproduced by a simple combination of densit…
Effect of spectral index distribution on estimating the AGN radio luminosity function
Zunli Yuan, Jiancheng wang, Ming Zhou +1
In this paper, we scrutinize the effect of spectral index distribution on estimating the AGN (active galactic nucleus) radio luminosity function (RLF) by a Monte Carlo method. We f…
A mixture evolution scenario of the AGN radio luminosity function
Zunli Yuan, Jiancheng Wang, Ming Zhou +1
We propose a mixture evolution scenario to model the evolution of the radio luminosity function (RLF) of steep spectrum AGNs (active galactic nuclei) based on a Bayesian method. In…
Is BZB J1450+5201 the most distant -ray BL Lacertae object?
N. H. Liao, J. M. Bai, J. G. Wang +5
BL Lacertae (BL Lac) objects at high redshifts () are rarely detected. Through careful analysis of the SDSS spectrum, BZB J1450+5201 is confirmed to be a high- BL Lac o…
A graphical analysis of the systematic error of classical binned methods in constructing luminosity functions
Zunli Yuan, Jiancheng Wang
The classical 1/Va and PC methods of constructing binned luminosity functions (LFs) are revisited and compared by graphical analysis. Using both theoretical analysis and illustrati…