Kai Liao

Gravitational lensing of gravitational waves: Universal characteristics of strongly lensed memory waveforms

Anonymous, Zhichao Zhao, Shaoqi Hou, Xi-Long Fan et autres

cn (code pays fourni par la source)

Identifying microlensing by compact dark matter through diffraction patterns in gravitational waves with machine learning

Ao Liu, Jiaxing Cui, Cuihong Wen, Kai Liao et autres

Abstract Gravitational wave (GW) microlensing induced by compact dark matter (DM) offers an unparalleled opportunity to explore the fundamental nature of dark matter, as it enables the detection of optically invisible compact objects that are otherwise inaccessible to electromagnetic observations. Conventional approaches …

cn (code pays fourni par la source)

Mock Catalogs of Strongly Lensed Gravitational Waves via a Halo Model Approach with Ground-based Detectors

Youkai Li, Kai Liao, M. Sun, Lilan Yang et autres

Abstract As plans for the construction of third-generation gravitational-wave (GW) detectors advance, research into strongly lensed GWs has become increasingly critical. It is anticipated that hundreds of multi-image lensed GWs will be detected annually. We present a comprehensive suite of lensed GW …

cn, pl (code pays fourni par la source)

Probing dark matter substructure with image number anomaly in strong lensing systems

Wenlin Hou, Jianxiang Liu, Kai Liao

cn (code pays fourni par la source)

Parameter estimation of eccentric massive black hole binaries with LISA and its cosmological implications

Jia-Hao Zhong, Jinzhao Yang, Tao Yang, Xuheng Ding et autres

Future space-based gravitational wave (GW) observatories such as LISA will detect massive black hole binaries (MBHBs), which are expected to be accompanied by electromagnetic counterparts, thereby providing bright standard sirens for cosmology. The orbital eccentricity of MBHBs can significantly improve the parameter …

cn (code pays fourni par la source)

Testing supermassive primordial black holes with lensing signals of binary black hole merges

Huan Zhou, Bin Liu, Zhengxiang Li, Xi-Jing Wang et autres

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Breaking the Mass-sheet Degeneracy in Time-delay Cosmography with Lensed and Unlensed Type Ia Supernovae

Xiaolei Li, Kai Liao, Xuheng Ding

Abstract This study introduces an innovative framework aimed at overcoming the ongoing issue of mass-sheet degeneracy (MSD) in time-delay cosmography by incorporating observations of both gravitationally lensed and unlensed Type Ia supernovae (SNe Ia). By simultaneously using lensing magnification measurements μ obs …

cn (code pays fourni par la source)

Improved identification of strongly lensed gravitational waves with host galaxy locations

Tonghua Liu, Kai Liao

We present a Bayesian framework that enhances the identification of strongly lensed gravitational waves (GWs) by incorporating informative positional priors from the Euclid galaxy lens catalog. The core of our method introduces a two-step reweighting scheme: first, gravitational wave parameter estimation is …

cn (code pays fourni par la source)

Joint Constraints on Fuzzy and Warm Dark Matter from Satellite Populations of the Milky Way and Andromeda

Jianxiang Liu, Y. Z. Gong, Kai Liao

Abstract We perform a joint analysis of the Milky Way (MW) and Andromeda (M31) satellite populations to constrain the properties of fuzzy dark matter (FDM) and thermal-relic warm dark matter (WDM). We combine MW satellite observations from the Dark Energy Survey and …

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Identification of Strongly Lensed Gravitational-wave Events Using Squeeze-and-excitation Multilayer Perceptron Data-efficient Image Transformer

Dejiang Li, TonghuaLiu, Ao Liu, Cuihong Wen et autres

Abstract With the advancement of third-generation gravitational-wave (GW) detectors, the identification of strongly lensed GW events is expected to play an increasingly vital role in cosmology and fundamental physics. However, traditional Bayesian inference methods suffer from combinatorial computational overhead as the number …

cn (code pays fourni par la source)

Probing primordial black holes with the distortion of stochastic gravitational wave background

Anonymous, Kai Liao, Xi-Long Fan

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Exploring black holes with multiple photon spheres by interferometric signatures

Xi-Jing Wang, Yuan Meng, Xiao‐Mei Kuang, Kai Liao

In this paper, we investigate the interferometric signatures of hairy Schwarzschild black holes (hSBHs) that have either single or double photon spheres. Our interest mainly stems from two considerations: (i) the photon ring structure in black hole images produces strong and universal …

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