LENSING

作品数：42被引量：15H指数：3
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相关领域：天文地球更多>>
相关作者：陈大明张乐更多>>
相关机构：北京大学华东师范大学国家天文台北京师范大学更多>>
相关期刊：《Science Bulletin》《Chinese Physics C》《Communications in Theoretical Physics》《Chinese Physics Letters》更多>>
相关基金：国家自然科学基金国家重点基础研究发展计划高等学校学科创新引智计划中国博士后科学基金更多>>
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Testing Cotton gravity as dark matter substitute with weak lensing
《Science China(Physics,Mechanics & Astronomy)》2025年第4期82-90,共9页Geyu Mo Qingqing Wang Xin Ren Weitong Yan Qinxun Li Yen Chin Ong Wentao Luo 
supported by the National Key R&D Program of China(Grant Nos.2024YFC2207500,and 2021YFC2203100);the CAS Young Interdisciplinary Innovation Team(JCTD-2022-20);the National Natural Science Foundation of China(Grant Nos.92476203,12433002,12261131497;12003029);111 Project for“Observational and Theoretical Research on Dark Matter and Dark Energy”(Grant No.B23042);the Fundamental Research Funds for Central Universities;the China Scholarship Council(CSC)Innovation Talent Funds;the University of Science and Technology of China Fellowships for International Cooperation;the University of Science and Technology of China(USTC)Research Funds of the Double FirstClass Initiative。
Harada proposed a modified theory of gravity called Cotton gravity,and argued that it successfully explains the rotation curves of 84 galaxies without the need for dark matter.In this work,we use the galaxy-galaxy len...
关键词：dark matter modified gravity gravitational lensing 
Plasma impact on black hole shadows and gravitational weak lensing in the Einstein-Maxwell-scalar theory
《Communications in Theoretical Physics》2025年第1期130-142,共13页Mirzabek Alloqulov Sanjar Shaymatov Abdul Jawad Oripjon Zaripov 
supported by the National Natural Science Foundation of China under Grant No.11675143;the National Key Research and Development Program of China under Grant No.2020YFC2201503。
In this paper,we investigate the optical properties of a non-rotating charged black hole(BH)in the Einstein-Maxwell-scalar(EMS)theory,together with a plasma medium.We first consider the photon sphere and shadow radius...
关键词：general relativity black hole shadow gravitational weak lensing 
Tackling the microlensing wave effects of strong lensing gravitational waves with TAAH
《Science China(Physics,Mechanics & Astronomy)》2025年第1期253-254,共2页Zuhui Fan 
The rapid development of gravitational wave(GW) observations since their first detection in 2015 [1] has opened a completely new window for exploring the Universe. Consequently, astronomical research has entered the m...
关键词：problem. APP WAVE 
Shadow and gravitational weak lensing for quantum improved charged black hole in plasma
《Chinese Physics C》2024年第11期280-291,共12页Mirzabek Alloqulov Farruh Atamurotov Ahmadjon Abdujabbarov Bobomurat Ahmedov Nozima Juraeva 
Supported partly by Grants F-FA-2021-432,F-FA-2021-510,and MRB-2021-527 of the Ministry of Higher Education,Science and Innovations of the Republic of Uzbekistan。
We investigated the shadow and weak gravitational lensing for the quantum-improved charged black hole(BH).First,the photon motion and BH shadow were studied in a plasma medium.It can be seen from our analysis that the...
关键词：gravitational weak lensing BH shadow plasma medium 
Shadows and weak gravitational lensing for black holes within Einstein-Maxwell-scalar theory被引量：1
《Chinese Physics C》2024年第9期234-243,共10页Ahmad Al-Badawi Mirzabek Alloqulov Sanjar Shaymatov Bobomurat Ahmedov 
Supported by the National Natural Science Foundation of China(11675143);the National Key Research and Development Program of China(2020YFC2201503);the support from Research Grant F-FA-2021-432 of the Ministry of Higher Education,Science and Innovations of the Republic of Uzbekistan。
In this study,we investigated the optical properties of charged black holes within the Einstein-Maxwellscalar(EMS)theory.We evaluated the shadow cast by these black holes and obtained analytical solutions for both the...
关键词：Einstein Maxwell gravity shadow gravitational weak lensing 
A regular MOG black hole's impact on shadows and gravitational weak lensing in the presence of a quintessence field被引量：1
《Communications in Theoretical Physics》2024年第8期91-102,共12页Ahmad Al-Badawi Sanjar Shaymatov Mirzabek Alloqulov Anzhong Wang 
supported by the National Natural Science Foundation of China under Grant No. 11675143;the National Key Research and Development Program of China under Grant No. 2020YFC2201503;the support from Research Grant F-FA-2021-432 of the Ministry of Higher Education, Science and Innovations of the Republic of Uzbekistan。
We investigate the impact of the modified gravity(MOG)field and the quintessence scalar field on horizon evolution,black hole(BH)shadow and the weak gravitational lensing around a static spherically symmetric BH.We fi...
关键词：modified gravity SHADOWS gravitational weak lensing quintessence field 
Quasi-2D weak lensing cosmological constraints using the PDF-SYM method
《Science China(Physics,Mechanics & Astronomy)》2024年第7期44-58,共15页Zhenjie Liu Jun Zhang Hekun Li Zhi Shen Cong Liu 
supported by the National Key Research and Development Program of China(Grant Nos.2023YFA1607800,and 2023YFA1607802);the National Natural Science Foundation of China(Grant Nos.11621303,11890691,and 12073017);the science research grants from China Manned Space Project(Grant No.CMS-CSST-2021-A01)。
Cosmic shear statistics,such as the two-point correlation function(2PCF),can be evaluated with the PDF-SYM method instead of the traditional weighted-sum approach.It makes use of the full PDF information of the shear ...
关键词：weak lensing shear-shear correlations cosmological parameters observations analysis 
Microlensing bias on the detection of strong lensing gravitational wave
《Science China(Physics,Mechanics & Astronomy)》2024年第6期156-165,共10页Xikai Shan Xuechun Chen Bin Hu Guoliang Li 
supported by the National Key R&D Program of China(Grant No.2021YFC2203001);support from Project funded by China Postdoctoral Science Foundation(Grant No.2023M730298)。
Identifying strong lensing gravitational wave(SLGW)events is of utmost importance in astrophysics as we approach the historic first detection of SLGW amidst the growing number of gravitational wave(GW)events.Currently...
关键词：gravitational wave gravitational strong lensing gravitational micro lensing wave optical effect 
Cosmological constraints from the joint analysis of clustering and lensing with the DESI Legacy Imaging Surveys
《Science China(Physics,Mechanics & Astronomy)》2024年第3期169-170,共2页Surhud More 
The comparison between the amplitude of density fluctuations in matter today as inferred from the observations of the Cosmic Microwave background by the Planck collaboration [1] to that from the observations of the la...
关键词：GALAXY parameters. GALAXIES 
Shadow and weak gravitational lensing for Ellis-Bronnikov wormhole被引量：1
《Chinese Physics C》2024年第2期183-194,共12页Mirzabek Alloqulov Farruh Atamurotov Ahmadjon Abdujabbarov Bobomurat Ahmedov Vokhid Khamidov 
partly Supported by Grants F-FA-2021-432,F-FA-2021-510,and MRB-2021-527 of the Ministry of Higher Education,Science and Innovations of the Republic of Uzbekistan。
In this study,we investigated the gravitational weak lensing and shadow of the Ellis-Bronnikov wormhole.First,we studied the photon motion in a plasma medium and a wormhole shadow.It was shown that the radius of the p...
关键词：LENSING wormhole shadow Ellis-Bronnikov wormhole 
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