Optical Signatures of a Schwarzschild Black Hole in a Dehnen-Type Dark Matter Halo
Institute of Fundamental and Applied Research, National Research University TIIAME(基础与应用研究所,国立研究大学TIIAME);National Pedagogical University of Uzbekistan named after Nizami(以尼扎米命名的乌兹别克斯坦国立师范大学);School of Advanced Sciences, Vellore Institute of Technology(韦洛尔技术学院高等科学学院);University of Tashkent for Applied Sciences(塔什干应用科学大学);Tashkent State Technical University(塔什干国立技术大学);School of Physics, Harbin Institute of Technology(哈尔滨工业大学物理学院);Institute for Advanced Studies, New Uzbekistan University(新乌兹别克斯坦大学高级研究院);Institute of Theoretical Physics, National University of Uzbekistan(乌兹别克斯坦国立大学理论物理研究所)
Javokhir Sharipov, Jonibek Khasanov, Pankaj Sheoran, Sanjar Shaymatov, Bobomurat Ahmedov
In this paper, the optical effects that occur near a Schwarzschild-like black hole (BH) with a Dehnen-type $(1,4,2)$ dark matter (DM) halo are explored. We first derive the photon sphere radius and obtain an analytical expression for the deflection angle in the weak-field regime by applying the Gauss-Bonnet theorem (GBT). For the strong-field regime, we perform ray-tracing calculations to examine the behavior of light trajectories and determine the corresponding number of orbits. We further compute the BH shadow and gravitational lensing in a plasma medium and provide constraints arising from the DM halo parameters. We also extend our analysis to weak gravitational lensing within plasma environments, considering both uniform and singular isothermal sphere (SIS) distributions. We find the analytical expressions for the deflection angle in the presence of plasma and examine the resulting effects on image magnification. The overall results highlight how DM halo properties and plasma characteristics jointly alter observable lensing signatures.
Observational properties of a Schwarzschild black hole surrounded by a Dehnen-type dark matter halo
Yunnan Observatories, Chinese Academy of Sciences(中国科学院云南天文台);Key Laboratory for Structure and Evolution of Celestial Objects, Chinese Academy of Sciences(中国科学院天体结构与演化重点实验室);International Centre of Supernovae, Yunnan Key Laboratory(超新星国际研究中心,云南省重点实验室);College of Physics, Guizhou University(贵州大学物理学院)
Gravitational radiation reaction around a static black hole surrounded by a Dehnen type dark matter halo
The Institute for Research in Fundamental Sciences (IPM)(伊朗基础科学研究所);Dipartimento di Fisica e Astronomia, Alma Mater Università di Bologna(博洛尼亚大学物理与天文学系);Istituto Nazionale di Fisica Nucleare, I.S. FLaG, Sezione di Bologna(意大利国家核物理研究所博洛尼亚分部);Alma Mater Research Center on Applied Mathematics (AM 2 )(阿尔玛·mater应用数学研究中心);Università di Camerino, Divisione di Fisica(卡梅里诺大学物理系);Istituto Nazionale di Fisica Nucleare (INFN), Sezione di Perugia(意大利国家核物理研究所佩鲁贾分部);INAF - Osservatorio Astronomico di Brera(意大利国家天体物理研究所布雷拉天文台);Al-Farabi Kazakh National University(法拉比哈萨克国立大学)
Gravitational Wave Signatures of Schwarzschild Black Hole in a Generalized Dehnen-Type $(1,4,γ)$ Dark Matter Halo
National University of Uzbekistan(乌兹别克斯坦国立大学);Institute for Theoretical Physics and Cosmology, Zhejiang University of Technology(浙江工业大学理论物理与宇宙学研究所);Institute of Fundamental and Applied Research, National Research University TIIAME(塔什干信息技术与应用科学国立研究院基础与应用研究所);University of Tashkent for Applied Sciences(塔什干应用科学大学)
Can a Dehnen-type dark matter halo affect the neutrino flavor oscillations?
University of Tashkent for Applied Sciences(塔什干应用科学大学);School of Physics, Harbin Institute of Technology(哈尔滨工业大学物理学院);Tashkent State Technical University(塔什干国立技术大学);Institute of Theoretical Physics, National University of Uzbekistan(乌兹别克斯坦国立大学理论物理研究所);Institute for Advanced Studies, New Uzbekistan University(新乌兹别克斯坦大学高级研究院);New Uzbekistan University(新乌兹别克斯坦大学)
Constraints on Schwarzschild Black Hole in a Generalized Dehnen-Type $(1,4,γ)$ Dark Matter Halo via the S2 Star Orbit around Sgr A$^\star$
Zhejiang University of Technology(浙江工业大学);Institute for Theoretical Physics and Cosmology, Zhejiang University of Technology(浙江工业大学理论物理与宇宙学研究所);United Center for Gravitational Wave Physics (UCGWP), Zhejiang University of Technology(浙江工业大学引力波物理联合中心);National Research University TIIAME(塔什干国立交通大学);Institute of Fundamental and Applied Research, National Research University TIIAME(塔什干国立交通大学基础与应用研究所);University of Tashkent for Applied Sciences(塔什干应用科学大学);Tashkent State Technical University(塔什干国立技术大学)
Gravitational Spectra and Wave Propagation in Regular Black Holes Supported by a Dehnen Halo
University of Hradec Králové(赫拉德茨克拉洛韦大学);National Research University TIIAME(塔什干国立研究大学TIIAME);University of Tashkent for Applied Sciences(塔什干应用科学大学);Tashkent State Technical University(塔什干国立技术大学);National University of Uzbekistan(乌兹别克斯坦国立大学);Mamun University(马蒙大学);Urgench State University(urgench国立大学)
Ringdown Signatures of Dehnen Dark Matter Halos: Fluid Modes and Detectability with Space-Based Detectors
Center for Gravitational Wave Experiment, National Microgravity Laboratory, Institute of Mechanics, Chinese Academy of Sciences(中国科学院力学研究所微重力国家实验室引力波实验中心)
Shadow, ISCO, Quasinormal modes, Hawking spectrum, Weak Gravitational lensing, and parameter estimation of a Schwarzschild Black Hole Surrounded by a Dehnen Type Dark Matter Halo
Compact Stars Sourced by Perfect Fluid Dark Matter Halos
College of Mathematics and Computer Science, Northwest Minzu University(西北民族大学数学与计算机科学学院);School of Physical Science and Technology, Lanzhou University(兰州大学物理科学与技术学院)
New analytical model of static black hole with a dark matter halo and parametric constraints through quasiperiodic oscillations
Harbin Institute of Technology(哈尔滨工业大学);Tashkent State Technical University(塔什干国立技术大学);National Research University TIIAME(塔吉克斯坦国立研究大学TIIAME);Zhejiang University of Technology(浙江工业大学);Tashkent University of Applied Sciences(塔什干应用科学大学);New Uzbekistan University(新乌兹别克斯坦大学);National University of Uzbekistan(乌兹别克斯坦国立大学)
Dark matter halo as a source of regular black-hole geometries
Research Centre for Theoretical Physics and Astrophysics, Institute of Physics, Silesian University in Opava(奥帕瓦西里西亚大学物理研究所理论与天体物理研究中心);Centro de Matemática, Computação e Cognição (CMCC), Universidade Federal do ABC (UFABC)(ABC联邦大学数学、计算与认知中心)
Observational Signatures of Exact Black Hole Solutions in a Dark Matter Halo
New Uzbekistan University(新乌兹别克斯坦大学);Institute of Fundamental and Applied Research, National Research University TIIAME(国立研究型大学TIIAME基础与应用研究所);Institute for Theoretical Physics and Cosmology, Zhejiang University of Technology(浙江工业大学理论物理与宇宙学研究所);Tashkent State Technical University(塔什干国立技术大学);Tashkent University of Applied Sciences(塔什干应用科学大学)
Observational Signatures of Accretion Disks around a Schwarzschild Black Hole in a Hernquist Dark Matter Halo
College of Physics Science and Technology, Hebei University(河北大学物理科学与技术学院);Hebei Key Lab of Optic-Electronic Information and Materials, Hebei University(河北大学河北省光电信息与材料重点实验室);National-Local Joint Engineering Laboratory of New Energy Photoelectric Devices, Hebei University(河北大学新能源光电器件国家地方联合工程实验室);Key Laboratory of High-pricision Computation and Application of Quantum Field Theory of Hebei Province, Hebei University(河北大学量子场论高精度计算与应用重点实验室)
Geodesics and Thermodynamics of a Schwarzschild Black Hole with Hernquist Dark Matter
Secretaria da Educação do Ceará (SEDUC), Coordenadoria Regional de Desenvolvimento da Educação (CREDE 9)(塞阿拉州教育部(SEDUC),区域教育发展协调局(CREDE 9));Echahid Cheikh Larbi Tebessi University(埃沙希德谢赫拉里比特贝西大学);Khazar University(哈扎尔大学);Universidade Federal da Paraíba(帕拉伊巴联邦大学);Universidade Federal do ABC (UFABC)(ABC联邦大学(UFABC))