6 papers
A Wavelet-Integrated Search Pipeline for Narrowband Technosignatures in FAST Observations of 33 Exoplanet Systems
Zi-Qi Li, Jian-Kang Li, Zhe-Wei Luo +14
Building on prior FAST targeted and blind SETI campaigns toward 33 exoplanet systems, we introduce a wavelet-integrated search pipeline for narrowband technosignature candidates in…
Redshift-binned constraints on the Hubble constant under CDM, CPL, and Padé cosmography
Zhi-Yuan Mo, Kang Jiao, Tong-Jie Zhang
Motivated by recent claims of a possible redshift dependence in late-Universe determinations of the Hubble constant (H_0), we test the robustness of this behavior using multiple co…
Optimizing Gaussian Process Kernels Using Nested Sampling and ABC Rejection for H(z) Reconstruction
Jia-yan Jiang, Kang Jiao, Tong-Jie Zhang
Recent cosmological observations have achieved high-precision measurements of the Universe's expansion history, prompting the use of nonparametric methods such as Gaussian processe…
FLRW Kinematic-Induced Measurement of the Hubble Constant from Cosmic Chronometer and Redshift Drift Observations
Kang Jiao, Tong-Jie Zhang, Liang Gao +1
We present a geometric embedding method that exploits the exact kinematic relation to transform redshift misalignment between Cosmic Chronometer (CC)…
Model-independent measurement of the Hubble Constant and the absolute magnitude of Type Ia Supernovae
Jian-Chen Zhang, Kang Jiao, Tong-Jie Zhang
In this work, we propose a cosmological model-independent and non-local method to constrain the Hubble Constant . Inspired by the quasi cosmological model-independent and $H_0…
Constraints on Baryon Density from the Effective Optical Depth of High-Redshift Quasars
Wen-Fei Liu, Yuan-Bo Xie, Zhi-E Liu +4
We present constraints on the baryonic matter density parameter, , within the framework of the CDM model. Our analysis utilizes observational data on the effective optica…