Beijing Normal University

A high-significance detection of primordial tidal torque imprints

Ming-Jie Sheng, Hao-Ran Yu, Min Bao +8

Tidal-torque theory predicts that galaxy angular momenta are imprinted by the primordial tidal field acting on proto-structures and that they can retain information about the early…

The eROSITA Final Equatorial-Depth Survey (eFEDS): X-ray stacking analysis of Subaru's optically selected clusters spanning low richness regime

N. T. Nguyen-Dang, N. Ota, N. Okabe +17

This is the second paper in a series exploring the X-ray properties of galaxy clusters optically selected by the Subaru Hyper Suprime-Cam (HSC) survey, using data from the SRG/eROS…

CSST Strong Lensing Preparation: Cosmological Constraints Forecast from CSST Galaxy-Scale Strong Lensing

Hengyu Wu, Yun Chen, Tonghua Liu +6

Strong gravitational lensing by galaxies is a powerful tool for studying cosmology and galaxy structure. The China Space Station Telescope (CSST) will revolutionize this field by d…

The life of central radio galaxies in clusters: AGN-ICM studies of eRASS1 clusters in the ASKAP fields

Angie Veronica, Thomas H. Reiprich, Florian Pacaud +35

The mechanical feedback from the central AGNs can be crucial for balancing the radiative cooling of the intracluster medium at the cluster centre. We aim to understand the relation…

astro-ph.CO2025★ 4 cited

CURLING -- II. Improvement on the $H_{0}$ Inference from Pixelized Cluster Strong Lens Modeling

Yushan Xie, Huanyuan Shan, Yiping Shu +9

Strongly lensed supernovae (glSNe) provide a powerful, independent method to measure the Hubble constant, $H_{0}$ , through time delays between their multiple images. The accuracy o…

Reproducing Abell 2744 with the HyperMillennium Simulation

Qiao Wang, Ming Li, Liang Gao +11

We present the Hyper Millennium (HM) simulation, an extremely large cosmological simulation designed to support next-generation galaxy surveys. The simulation follows 4.2 trillion…

$O_{k}$ null test with multi-task Gaussian processes: cosmic curvature and data compatibility

Yungui Gong, Qing Gao, Xuchen Lu +1

The $O_{k}$ null test can not only assess whether the cosmic curvature is zero, therefore if true reducing degeneracies between cosmic curvature and other cosmological parameters, bu…

Impact of Large-Scale Structure along Line-of-Sight on Time-Delay Cosmography

Shijie Lin, Bin Hu, Chengliang Wei +4

Time-delay cosmography offers a promising and independent method for measuring cosmological distances by monitoring multiple images of gravitationally lensed sources. However, beyo…

astro-ph.CO2025★ 16 cited

The SRG/eROSITA All-Sky Survey. Detection of shock-heated gas beyond the halo boundary into the accretion region

X. Zhang, E. Bulbul, B. Diemer +16

The hot gas in the outskirts of galaxy cluster-sized halos, extending around and beyond the virial radius into nearby accretion regions, remains among one of the least explored bar…

Inflationary Models with Gauss-Bonnet Coupling in Light of ACT Observations

Yigan Zhu, Qing Gao, Yungui Gong +1

Recent analyses combining Atacama Cosmology Telescope (ACT) data with other cosmological datasets report a higher scalar spectral index $n_{s}$ , creating tension with a wide range of…

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 $z ˙ = H_{0} (1 + z) - H (z)$ to transform redshift misalignment between Cosmic Chronometer (CC)…

astro-ph.CO2025★ 16 cited

Probing Ultralight Axion-like Dark Matter: A Pulsar Timing Arrays-Pulsar Polarization Arrays Synergy

Ximeng Li, Yonghao Liu, Zu-Cheng Chen +9

Ultralight axionlike dark matter (ALDM) is a leading candidate in the dark matter realm, characterized by its prominent wave properties on astronomical scales. Pulsar timing arrays…

Approximate reconstruction of inflationary potential with ACT observations

Zhu Yi, Xingzhi Wang, Qing Gao +1

The Atacama Cosmology Telescope (ACT) has recently reported updated measurements of the scalar spectral index $n_{s}$ , revealing a tension with the predictions of many conventional i…

astro-ph.CO2025★ 3 cited

Reconciling Nonminimally Coupled Higgs Inflation with ACT DR6 Observations through Reheating

Lang Liu, Zhu Yi, Yungui Gong

The Higgs inflation model with nonminimal coupling, while disfavored by the 1 $σ$ region of the latest Atacama Cosmology Telescope Data Release 6 (ACT DR6) observational data, can b…

astro-ph.CO2025★ 30 cited

Constraints on the galaxy formation models during epoch of reionization with high redshift observations

Qing-Bo Ma, Xiao-Rong Chen, Ming Li +4

We use high resolution N-body dark matter simulations and L-Galaxies semi-analytical galaxy formation models to explore the high- $z$ galaxy properties and estimate the budget of io…

Non-minimal coupling in light of ACT

Qing Gao, Yungui Gong, Zhu Yi +1

The latest ACT data release disfavors the attractor $n_{s} = 1 - 2/ N$ . In inflationary models with nonminimal coupling, such attractors typically arise in the strong coupling limit. To a…

astro-ph.CO2025★ 62 cited

Estimating constraints on cosmological parameters via the canonical and the differential redshift drift with SKA HI 21-cm observations

Jiangang Kang, Guangyuan Song, Tong Jie Zhang +1

Redshift drift effect, an observational probe that indenpendent of cosmological models, presents unique applications in specific cosmological epoch. By quantifying redshift drift s…

astro-ph.CO2025★ 4 cited

FRB cosmology with the RM-PRS Luminosity Correlation

Ran Gao, He Gao, Zhengxiang Li +1

Fast Radio Bursts (FRBs) have emerged as a powerful tool for cosmological studies, particularly through the dispersion measure-redshift ( $DM - z$ ) relation. This work propos…

astro-ph.CO2025★ 4 cited

Polarization Properties of the Electromagnetic Response to High-frequency Gravitational Wave

Jian-Kang Li, Wei Hong, Tong-Jie Zhang

Electromagnetic waves (EMWs) can be generated by gravitational waves (GWs) within a magnetic field via the Gertsenshtein effect. The conversion probability between GWs and EMWs can…

Dynamical Dark Energy in light of the DESI DR2 Baryonic Acoustic Oscillations Measurements

Gan Gu, Xiaoma Wang, Yuting Wang +57

Understanding whether cosmic acceleration arises from a cosmological constant or a dynamical component is a central goal of cosmology, and the Dark Energy Spectroscopic Instrument…

Do JWST reionization (optical depth) puzzle, cosmological tensions, and CMB anomalies imply Harrison-Zel'dovich spectrum?

Hao-Hao Li, Xin-zhe Zhang, Taotao Qiu +1

The James Webb Space Telescope (JWST) has observed massive galaxies at high redshifts, which implies an earlier epoch of reionization (EoR) compared with the cosmic microwave backg…

astro-ph.CO2025★ 6 cited

The SRG/eROSITA all-sky survey: View of the Fornax galaxy cluster

T. H. Reiprich, A. Veronica, F. Pacaud +18

The Fornax cluster is one of the closest X-ray-bright galaxy clusters. Previous observations of the intracluster medium were limited to less than R500. We aim to significantly exte…