Article
Astronomy & Astrophysics
Xin Li, Xiao Zhang, Hai-Nan Lin
Summary: This paper investigates the orbits of Finslerian Schwarzschild black hole, revealing the effects of the Finslerian parameter and orbital elements on orbital precession. Observations of star orbits provide a means to constrain the Finslerian parameter, with numerical results showing the influence of motion direction and the magnitude of the parameter on orbital precession.
Article
Astronomy & Astrophysics
Jin-Tao Yao, Xin Li
Summary: This paper investigates the closed orbits of the axial symmetric Finslerian extension of a Schwarzschild black hole and finds that a rational Finslerian parameter is necessary for closed orbits.
Article
Astronomy & Astrophysics
Sourav Roy Chowdhury, Debabrata Deb, Farook Rahaman, Saibal Ray, B. K. Guha
Summary: The behavior of the noncommutative radiating Schwarzschild black hole in Finslerian spacetime was studied, revealing variations in the number of horizons and minimal mass with the Finslerian parameter. The study also found changes in the maximum temperature and stability of the black hole with the Finslerian parameter. The presence of a stable black hole remnant was suggested, uniquely determined by Finslerian and noncommutative parameters.
CLASSICAL AND QUANTUM GRAVITY
(2021)
Article
Physics, Particles & Fields
Z. Nekouee, S. K. Narasimhamurthy
Summary: The main goal of this paper is to solve the Finslerian Kiselev black hole and investigate its thermodynamic characteristics surrounded by dust, radiation, quintessence, and the cosmological constant. Various thermodynamic quantities are calculated to analyze the features of these black holes, including area, horizon radius, Bekenstein-Hawking entropy, Hawking temperature, surface gravity, and Komar energy. Additionally, the universal relations of these black holes are studied, along with the role and effect of the Finslerian Ricci scalar (q) on Finslerian Kiselev black holes and their stability.
EUROPEAN PHYSICAL JOURNAL C
(2023)
Article
Astronomy & Astrophysics
Mayura Balakrishnan, Paul A. Draghis, Jon M. Miller, Joe Bright, Robert Fender, Mason Ng, Edward Cackett, Andrew Fabian, Kip Kuntz, James C. A. Miller-Jones, Daniel Proga, Paul S. Ray, John Raymond, Mark Reynolds, Abderahmen Zoghbi
Summary: A multiwavelength analysis suggests that the X-ray transient Swift J1728.9-3613 likely contains a black hole primary and is associated with the SNR G351.9-0.9. The discovery supports numerical simulations of black hole formation and provides observational evidence of distinct black hole formation channels.
ASTROPHYSICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
Zoheyr Doctor, Ben Farr, Daniel E. Holz
Summary: Through observing the data from the first two and a half observing runs, the population properties of leftover black holes were inferred, estimating the number density, mass spectrum, and spin distribution of these black holes today. The study suggests that leftover black holes may retain a certain percentage in clusters, but if hierarchical mergers occur, the overall number density would decrease accordingly.
ASTROPHYSICAL JOURNAL LETTERS
(2021)
Article
Physics, Particles & Fields
Z. Amirabi, S. Habib Mazharimousavi
Summary: A recent introduction of a nonlinear Maxwell Lagrangian that preserves both conformal and SO(2) duality-rotation invariance has led to the derivation of a black hole solution within the framework of Einstein's theory of gravity minimally coupled with this nonlinear electrodynamics. The solution obtained is the Reissner-Nordstrom black hole enhanced with an additional parameter from the nonlinear theory. The upper bound for this free parameter is determined using causality and unitarity principles, with a consequent investigation into the impact of this parameter on the physical properties of the black hole solution.
EUROPEAN PHYSICAL JOURNAL C
(2021)
Article
Astronomy & Astrophysics
A. Naveena Kumara, C. L. Ahmed Rizwan, Kartheek Hegde, K. M. Ajith, Md Sabir Ali
Summary: This study investigates the microstructure and phase transition behavior of Born-Infeld AdS black holes using a novel geometry method, revealing different types of phase transitions and corresponding microscopic features.
Article
Astronomy & Astrophysics
Sreejith Nair, Vardarajan Suneeta
Summary: This study investigates the black hole black string phase transition in Einstein-Gauss-Bonnet gravity in the large dimension limit. The results suggest that the geometry at the merger point may not necessarily approach a black hole as the dimensions increase.
Article
Physics, Multidisciplinary
Qin Yu, Qi Xu, Jun Tao
Summary: This paper investigates Euler-Heisenberg black holes with quantum electrodynamics (QED) correction, which are embraced by a cavity serving as a boundary of the black hole spacetime and contributing to the system's equilibrium. The thermodynamic properties of the black hole, including phase transitions and phase structures, are explored. The thermodynamic geometry is also studied to diagnose the microscopic interactions of black hole thermodynamic systems.
COMMUNICATIONS IN THEORETICAL PHYSICS
(2023)
Article
Astronomy & Astrophysics
Parthapratim Mahapatra, Anuradha Gupta, Marc Favata, K. G. Arun, B. S. Sathyaprakash
Summary: This study investigates the retention probability of remnants formed by hierarchical mergers in star clusters, based on the kick velocities imparted to the black hole remnants. Utilizing the gravitational-wave event database, it is found that star clusters with escape speeds of 200 km s(-1) can retain about 50% of the events in the second gravitational-wave transient catalog. The study highlights the significance of considering kick velocity inferences in future studies of hierarchical mergers.
ASTROPHYSICAL JOURNAL LETTERS
(2021)
Article
Astronomy & Astrophysics
Shin'ichi Nojiri, Sergei D. Odintsov, Valerio Faraoni
Summary: The Renyi and Tsallis entropies are discussed as potential alternatives to the Bekenstein-Hawking area-law entropy, with the importance of maintaining consistency with the notions of Hawking temperature and thermodynamical energy noted. The study also explores the possibility of relating the Renyi and Tsallis entropies to the quantum gravity corrected Bekenstein-Hawking entropy.
Article
Astronomy & Astrophysics
Fabiano F. Santos, Eduardo Folco Capossoli, Henrique Boschi-Filho
Summary: This study investigates the impact of Horndeski gravity on the AdS/BCFT correspondence, analyzing the 3D black hole corresponding to 2D BCFT, studying the changes in boundary entropy and thermodynamic properties, and indicating a restoration of conformal symmetry. The research also includes a study on the influence of Horndeski gravity on the Hawking-Page phase transition, revealing stable and unstable phases in the plane of free energy versus temperature.
Article
Physics, Multidisciplinary
Yun-Zhi Du, Huai-Fan Li, Yang Zhang, Xiang-Nan Zhou, Jun-Xin Zhao
Summary: In this paper, we investigate the thermodynamics of the Einstein-power-Yang-Mills AdS black holes under the gauge-gravity duality. We find that the dual quantity of pressure is the effective volume, leading to a new behavior of the Van de Waals-like phase transition for this system. We also examine the second-order phase transition of the EPYM AdS black hole and study the effect of the non-linear Yang-Mills parameter on the thermodynamic properties.
Article
Astronomy & Astrophysics
Matteo Boschini, Davide Gerosa, Vijay Varma, Cristobal Armaza, Michael Boyle, Marceline S. Bonilla, Andrea Ceja, Yitian Chen, Nils Deppe, Matthew Giesler, Lawrence E. Kidder, Prayush Kumar, Guillermo Lara, Oliver Long, Sizheng Ma, Keefe Mitman, Peter James Nee, Harald P. Pfeiffer, Antoni Ramos-Buades, Mark A. Scheel, Nils L. Vu, Jooheon Yoo
Summary: Numerical-relativity surrogate models are important in gravitational-wave astronomy, but their applicability is limited. This study presents a machine learning approach to extend the validity of existing models by training on both numerical-relativity simulations and analytical predictions. The results show that the proposed model achieves comparable or higher accuracy than existing models and can make predictions for arbitrary mass ratios.
Article
Physics, Particles & Fields
Z. W. Feng, H. L. Li, X. T. Zu, S. Z. Yang
EUROPEAN PHYSICAL JOURNAL C
(2016)
Article
Astronomy & Astrophysics
Zhong-Wen Feng, Shu-Zheng Yang, Hui-Ling Li, Xiao-Tao Zu
Article
Physics, Particles & Fields
Hui-Ling Li, Zhong-Wen Feng, Shu-Zheng Yang, Xiao-Tao Zu
Article
Physics, Particles & Fields
Zhong-Wen Feng, Qun-Chao Ding, Shu-Zheng Yang
EUROPEAN PHYSICAL JOURNAL C
(2019)
Article
Physics, Multidisciplinary
Zhong-Wen Feng, Xia Zhou, Shi-Qi Zhou, Dan-Dan Feng
Article
Physics, Multidisciplinary
Zhong-Wen Feng, Xia Zhou, Guansheng He, Shi-Qi Zhou, Shu-Zheng Yang
Summary: The study examines the Joule-Thomson expansion of higher dimensional nonlinear AdS black hole with power Maxwell invariant source. The inversion temperature is influenced by inversion pressure, dimensionality, nonlinearity parameter, and charge. The relationship between the minimum inversion temperature and critical temperature is independent of charge but varies with dimensionality and nonlinearity parameter.
COMMUNICATIONS IN THEORETICAL PHYSICS
(2021)
Article
Physics, Particles & Fields
Zhong-Wen Feng, Guansheng He, Xia Zhou, Xue-Ling Mu, Shi-Qi Zhou
Summary: The study explores the effects of higher-order generalized uncertainty principle on the Jeans mass of collapsing molecular clouds, revealing a modified Jeans mass lower than the original case which facilitates star formation in small mass Bok globules. The estimated range for the new generalized uncertainty principle parameter gamma(0) is between 10^11 to 10^12.
EUROPEAN PHYSICAL JOURNAL C
(2021)
Article
Physics, Multidisciplinary
Xia Zhou, Zhong-Wen Feng, Shi-Qi Zhou
Summary: This study investigates the thermodynamic evolution and phase transition of a black hole in a finite spherical cavity subject to the generalized uncertainty principle. The results show that the thermodynamic quantities, stability, critical behavior, and phase transition of the black hole are significantly affected by both positive and negative values of the generalized uncertainty principle parameter, beta(0). For beta(0) > 0, the black hole forms a remnant with finite temperature, finite mass, and zero local heat capacity in the last stages of evolution. For beta(0) < 0, the remnant is metastable and would be in the Hawking-Page-type phase transition forever.
FRONTIERS IN PHYSICS
(2022)
Article
Physics, Multidisciplinary
Zhongwen Feng, Xia Zhou, Shiqi Zhou, Shuzheng Yang
Summary: In this study, we investigate the rainbow gravity-corrected thermodynamic phenomena and phase structure of the Schwarzschild black hole surrounded by a spherical cavity in the extended phase space. The results show that rainbow gravity has a significant effect on the thermodynamic phenomena and phase structure of the black hole, preventing total evaporation and leading to a remnant with limited temperature but no mass. Additionally, we restore the criticality of the P-V ensemble and observe two Hawking-Page-like phase transitions and one first-order phase transition, which are not present in the original case. Importantly, our findings demonstrate that the thermodynamic behavior and phase transition of the rainbow SC black hole surrounded by a cavity in the extended phase space are similar to those of the Reissner-Nordstrom anti-de Sitter black hole, indicating the activation of electric charge and cutoff factor in the evolution of the black hole.
COMMUNICATIONS IN THEORETICAL PHYSICS
(2022)
Article
Astronomy & Astrophysics
Zhong-Wen Feng, Xia Zhou, Shi-Qi Zhou
Summary: The paper investigates the mechanism of gravitational baryogenesis for generating baryon asymmetry in the early Universe. It is found that using a higher-order generalized uncertainty principle (GUP) can break the thermal equilibrium of the Universe and produce baryon asymmetry. The results of the study satisfy Sakharov's conditions, demonstrating the feasibility of explaining baryon asymmetry within the framework of higher-order GUP.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2022)
Article
Astronomy & Astrophysics
S. Q. Zhou, E. Guegercinoglu, J. P. Yuan, M. Y. Ge, C. Yu, C. M. Zhang, J. Zhang, Z. W. Feng, C. Q. Ye
Summary: In this study, a new emission-rotation correlation concurrent with a glitch was detected in the middle-aged pulsar PSR J0738-4042. The glitch event is likely the underlying cause of this correlation, and it is the first glitch event observed in this pulsar.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Qi-Min Feng, Zhong-Wen Feng, Xia Zhou, Qing-Quan Jiang
Summary: In this work, we investigate the stochastic gravitational wave background generated during the first-order cosmological QCD phase transition of the early universe in the framework of the Barrow entropy. We derive the Barrow corrections to the stochastic gravitational wave background spectrum and analyze the influence of Barrow entropy on the total energy density and peak signal of stochastic gravitational waves. We discuss the possibility of detecting these stochastic gravitational wave signals with relevant experiments.
