The research presented in this paper discusses the impact that the parameters of charge(Q)and screening factor(γ)have on properties of the horizon and silhouette of rotating charged Mod Max black holes which were rev...The research presented in this paper discusses the impact that the parameters of charge(Q)and screening factor(γ)have on properties of the horizon and silhouette of rotating charged Mod Max black holes which were reviewed in[Eur.Phys.J.C(2022)82:1155]recently,building upon previous findings in the field.Furthermore,the study explores the behavior of null geodesics,which can help us better understand the apparent shape of the black hole’s silhouette,as well as the distortion parameter and approximate radii of the silhouette that are influenced by the aforementioned parameters,and there are some values of parameter Q which corresponds to data from the Event Horizon Telescope(EHT).Notably,we explore the distortion parameter and approximate radii of the silhouette,revealing that while an increase inγleads to a growth in silhouette radius(Rs),it simultaneously reduces the distortion rate(δs).Conversely,heightened Q charge results in a reduction of Rsaccompanied by an increase inδs.Lastly,the paper analyzes the effects of the black hole’s parameters on the effective potential and energy emission:the peak value of the energy emission rate experiences a decrease as the screening factor(γ)increases,while it increases with higher values of the charge parameter(Q).展开更多
In this study,we investigate ModMax electrodynamics localized within the Randall-Sundrum Ⅱ and Dvali-Gabadadze-Porrati branes,deriving corresponding 3-brane spacetime solutions that conform to the effective Einstein ...In this study,we investigate ModMax electrodynamics localized within the Randall-Sundrum Ⅱ and Dvali-Gabadadze-Porrati branes,deriving corresponding 3-brane spacetime solutions that conform to the effective Einstein equations in each specific scenario.We construct solutions for charged black holes within the effective Einstein equation framework in both braneworld scenarios.The examination explores the trajectories of charged objects in this spacetime,underscoring the significance of the nonlinear parameter.Our analysis uncovers the fact that,similar to the prior ModMax black hole investigation,the nonlinear parameter plays a pivotal role in suppressing the effective charge of the black hole,due to its definite positive value.展开更多
In this study,we investigate the properties of the Dyonic ModMax black hole solution using strong gravitational lensing.Additionally,we calculate the time delay between two relativistic images of a background object.F...In this study,we investigate the properties of the Dyonic ModMax black hole solution using strong gravitational lensing.Additionally,we calculate the time delay between two relativistic images of a background object.First,we analyze expressions for the photon orbits in the spacetime of the Dyonic ModMax black hole.To obtain observational consequences,we provide expressions for the observable quantities,such as angular radius and magnifications.The numerous observations suggest that many nearby galaxies contain supermassive central black holes.In our model,such a supermassive black hole can be characterized by two additional parameters:γand Q.Notably,the bending angleαD(b)and the angular positionθ∞decrease with increasing charge of the black hole Q,while the parameterγdisplays opposite behavior to that of Q.By using observational data of supermassive black holes SgrA*and M87*,we obtain constraints for these parameters.展开更多
基金partly supported by Research Grant F-FA-2021510 of the Uzbekistan Ministry for Innovative Developmentsupport received from the Scientific and Technological Research Council of Türkiye(TüBITAK),the Abdus Salam International Centre for Theoretical Physics,Trieste,Italy and the Sponsoring Consortium for Open Access Publishing in Particle Physics(SCOAP3)。
文摘The research presented in this paper discusses the impact that the parameters of charge(Q)and screening factor(γ)have on properties of the horizon and silhouette of rotating charged Mod Max black holes which were reviewed in[Eur.Phys.J.C(2022)82:1155]recently,building upon previous findings in the field.Furthermore,the study explores the behavior of null geodesics,which can help us better understand the apparent shape of the black hole’s silhouette,as well as the distortion parameter and approximate radii of the silhouette that are influenced by the aforementioned parameters,and there are some values of parameter Q which corresponds to data from the Event Horizon Telescope(EHT).Notably,we explore the distortion parameter and approximate radii of the silhouette,revealing that while an increase inγleads to a growth in silhouette radius(Rs),it simultaneously reduces the distortion rate(δs).Conversely,heightened Q charge results in a reduction of Rsaccompanied by an increase inδs.Lastly,the paper analyzes the effects of the black hole’s parameters on the effective potential and energy emission:the peak value of the energy emission rate experiences a decrease as the screening factor(γ)increases,while it increases with higher values of the charge parameter(Q).
文摘In this study,we investigate ModMax electrodynamics localized within the Randall-Sundrum Ⅱ and Dvali-Gabadadze-Porrati branes,deriving corresponding 3-brane spacetime solutions that conform to the effective Einstein equations in each specific scenario.We construct solutions for charged black holes within the effective Einstein equation framework in both braneworld scenarios.The examination explores the trajectories of charged objects in this spacetime,underscoring the significance of the nonlinear parameter.Our analysis uncovers the fact that,similar to the prior ModMax black hole investigation,the nonlinear parameter plays a pivotal role in suppressing the effective charge of the black hole,due to its definite positive value.
文摘In this study,we investigate the properties of the Dyonic ModMax black hole solution using strong gravitational lensing.Additionally,we calculate the time delay between two relativistic images of a background object.First,we analyze expressions for the photon orbits in the spacetime of the Dyonic ModMax black hole.To obtain observational consequences,we provide expressions for the observable quantities,such as angular radius and magnifications.The numerous observations suggest that many nearby galaxies contain supermassive central black holes.In our model,such a supermassive black hole can be characterized by two additional parameters:γand Q.Notably,the bending angleαD(b)and the angular positionθ∞decrease with increasing charge of the black hole Q,while the parameterγdisplays opposite behavior to that of Q.By using observational data of supermassive black holes SgrA*and M87*,we obtain constraints for these parameters.
