Physics of the Dark Universe最新文献

{"title":"Main sequence of star formation and colour bimodality considering galaxy environment","authors":"Pius Privatus ,&nbsp;Umananda Dev Goswami","doi":"10.1016/j.dark.2024.101802","DOIUrl":"10.1016/j.dark.2024.101802","url":null,"abstract":"<div><div>This study involves the use of friend-of-friend method on the volume limited samples constructed from the Sloan Digital Sky Survey Data Release 12 (SDSS DR12) to classify the galaxies into isolated and non-isolated environments hence to investigate the influence of the galaxy environment on the main sequence of star formation, and colour bimodality. We classified the galaxies into the luminous volume-limited sample with <span><math><mrow><mo>−</mo><mn>22</mn><mo>.</mo><mn>5</mn><mo>≤</mo><msub><mrow><mi>M</mi></mrow><mrow><mi>r</mi></mrow></msub><mo>≤</mo><mo>−</mo><mn>20</mn><mo>.</mo><mn>5</mn></mrow></math></span> (mag), and the faint volume-limited sample with <span><math><mrow><mo>−</mo><mn>20</mn><mo>.</mo><mn>5</mn><mo>≤</mo><msub><mrow><mi>M</mi></mrow><mrow><mi>r</mi></mrow></msub><mo>≤</mo><mo>−</mo><mn>18</mn><mo>.</mo><mn>5</mn></mrow></math></span> (mag). Using the WHAN diagnostic diagram we assigned the samples into star-forming, strong AGN, weak AGN, and retired galaxies based on their environment (isolated and non-isolated). The friend-of-friend method was successful in producing consistent results regarding the stellar mass-SFR and stellar mass-colour known relations. Apart from that the decrease in the slope of the main sequence for star-forming galaxies by 0.04 dex and intercept by 0.39 dex for the luminous sample was observed while the faint sample a decrease of 0.08 dex in slope and 0.74 dex in intercept was observed between isolated and non-isolated galaxies. A significant difference on the number of galaxies between isolated and non-isolated galaxies within, above and below the main sequence by 7.47%, 28.51%, 14.59% for the luminous sample while for the faint sample by 16.15%, 32.60%, 35.23% on average, respectively are observed. A significant difference in the number of galaxies in the blue cloud, green valley, and red sequence by 10.30%, 20.61%, 5.74% for luminous sample while for faint sample by 28.46%, 41.36%, 8.95% on average, respectively was observed. The study concludes that the galaxy environment influences the shaping and positioning of galaxies along the star formation main sequence and colour bimodality.</div></div>","PeriodicalId":48774,"journal":{"name":"Physics of the Dark Universe","volume":"47 ","pages":"Article 101802"},"PeriodicalIF":5.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143100327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cosmic and thermodynamics consequences of Chaplygin–Jacobi corrected HDE model","authors":"Nadeem Azhar ,&nbsp;Shamaila Rani ,&nbsp;Abdul Jawad ,&nbsp;Mohammad Mahtab Alam ,&nbsp;Sanjar Shaymatov","doi":"10.1016/j.dark.2025.101819","DOIUrl":"10.1016/j.dark.2025.101819","url":null,"abstract":"<div><div>In this study, we investigate a cosmologically compatible model of the universe using the generalized Chaplygin–Jacobi gas framework. The holographic generalized Chaplygin–Jacobi gas model presents an advanced approach to analyzing dark energy behavior and its role in cosmic evolution. This model brings together ideas from holographic dark energy, generalized Chaplygin gas and Jacobi gas theories. We assume that dark energy sources can be described as generalized Chaplygin–Jacobi gas, associating the Hubble horizon with the Chaplygin scalar field and incorporating specific elliptic identities. In this context, we explore the equation of state parameter, <span><math><mrow><mi>ω</mi><mo>−</mo><msup><mrow><mi>ω</mi></mrow><mrow><mo>′</mo></mrow></msup></mrow></math></span> plane and <span><math><mrow><mi>O</mi><mi>m</mi></mrow></math></span> diagnostics. To assess model stability, we analyze the squared speed of sound and examine the validity of the generalized second law of thermodynamics/thermal condition. Additionally, we evaluate the model’s energy density and pressure to compare its correspondence with the Chaplygin scalar field model. Overall, our findings suggest that the constraints align well with current observational data.</div></div>","PeriodicalId":48774,"journal":{"name":"Physics of the Dark Universe","volume":"47 ","pages":"Article 101819"},"PeriodicalIF":5.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143100691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modeling of compact stars in de Rham–Gabadadze–Tolley like massive gravity","authors":"M.R. Shahzad ,&nbsp;Wajiha Habib ,&nbsp;Asifa Ashraf ,&nbsp;Awatef Abidi ,&nbsp;H. Elhosiny Ali ,&nbsp;Ali M. Mubaraki","doi":"10.1016/j.dark.2024.101797","DOIUrl":"10.1016/j.dark.2024.101797","url":null,"abstract":"<div><div>We proposed a new mathematical model of compact structure and analyzed the stability in the de Rham Gabadadze Tolley (dRGT) theory of gravity. The formulation of field equations within the framework of the modified theory is presented by considering the anisotropic matter distribution within the spherically symmetric geometry. We employed the Krori and Barua (KB) metric, denoted as <span><math><mrow><mi>ϕ</mi><mrow><mo>(</mo><mi>r</mi><mo>)</mo></mrow><mo>=</mo><mfrac><mrow><mn>1</mn></mrow><mrow><mn>2</mn></mrow></mfrac><mi>B</mi><msup><mrow><mi>r</mi></mrow><mrow><mn>2</mn></mrow></msup><mo>+</mo><mi>d</mi></mrow></math></span> and <span><math><mrow><mi>λ</mi><mrow><mo>(</mo><mi>r</mi><mo>)</mo></mrow><mo>=</mo><mfrac><mrow><mn>1</mn></mrow><mrow><mn>2</mn></mrow></mfrac><mi>A</mi><msup><mrow><mi>r</mi></mrow><mrow><mn>2</mn></mrow></msup></mrow></math></span>, where <span><math><mi>A</mi></math></span>, <span><math><mi>B</mi></math></span>, and <span><math><mi>C</mi></math></span> represent the unknown constants to generate the solution of field equations. In this investigation, we considered five different known compact stars: Vela X-12 with mass 1.77<span><math><mrow><mi>M</mi><mrow><mo>(</mo><msub><mrow><mi>M</mi></mrow><mrow><mo>⨀</mo></mrow></msub><mo>)</mo></mrow></mrow></math></span> and radius 9.99 km, 4U 1608-52 with mass 1.74<span><math><mrow><mi>M</mi><mrow><mo>(</mo><msub><mrow><mi>M</mi></mrow><mrow><mo>⨀</mo></mrow></msub><mo>)</mo></mrow></mrow></math></span> and radius 9.3 km, PSR J1903+327 with mass 1.667<span><math><mrow><mi>M</mi><mrow><mo>(</mo><msub><mrow><mi>M</mi></mrow><mrow><mo>⨀</mo></mrow></msub><mo>)</mo></mrow></mrow></math></span> and radius 9.438 km, Cen X-3 with mass 1.49<span><math><mrow><mi>M</mi><mrow><mo>(</mo><msub><mrow><mi>M</mi></mrow><mrow><mo>⨀</mo></mrow></msub><mo>)</mo></mrow></mrow></math></span> and radius 9.51 km, and 4U 1820-30 with mass 1.58<span><math><mrow><mi>M</mi><mrow><mo>(</mo><msub><mrow><mi>M</mi></mrow><mrow><mo>⨀</mo></mrow></msub><mo>)</mo></mrow></mrow></math></span> and radius 9.1 km, respectively to observe the physical properties of the presented model. We have checked our model for physical validity and stability by exploring the graphical behavior of some important properties such as energy density, pressure (P_r, P_t), energy conditions, stability via Herrera cracking concept and the adiabatic index, mass function, compactness, and surface redshift on various compact stars considered in this study. Significantly, we analyzed the demeanor of different forces influenced on the system and observed that our model remain in the hydrostatic equilibrium under the impact of these forces. All the obtained results show that our proposed model is realistic and stable.</div></div>","PeriodicalId":48774,"journal":{"name":"Physics of the Dark Universe","volume":"47 ","pages":"Article 101797"},"PeriodicalIF":5.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143099728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spherically symmetric perfect fluid filled universe within the 4 dimensional Einstein–Gauss–Bonnet gravity formalism with vanishing conformal curvature","authors":"Sudan Hansraj ,&nbsp;Chevarra Hansraj ,&nbsp;Njabulo Mkhize ,&nbsp;Abdelghani Errehymy ,&nbsp;Sunil Kumar Maurya","doi":"10.1016/j.dark.2024.101757","DOIUrl":"10.1016/j.dark.2024.101757","url":null,"abstract":"<div><div>Conformally flat spacetime geometry is of immense physical importance. In this context we obtain the most general solutions for 4 dimensional Einstein–Gauss–Bonnet (4D EGB) static spherically symmetric spacetimes. The standard Schwarzschild incompressible fluid sphere is one possible solution, however, new branches of solutions emerge that have cosmological significance. It is intriguing that the geometry of the new model is given by an exactly known spatially directed potential while the remaining potential is given as an integral. It is not necessary to know the explicit form of the temporally directed potential to analyze the physics of the model. However, at least two explicit exact solutions for both potentials are exhibited. Graphical plots are constructed to show that barring a short interval from the center of the distribution which may be excised and replaced with a well-behaved fluid, all the elementary physical tests are successful. The model considered does not admit a finite radius hence is not applicable to astrophysical compact objects however the pleasing physical characteristics of the fluid suggests applicability to a perfect fluid filled universe. The model satisfies the causality requirement preventing the sound speed from becoming superluminal as well as the Chandrasekar stability criterion demanded of adiabatic fluids. Moreover all the energy conditions are complied with. The analysis effectively rules out the existence of conformally flat stars in 4D EGB gravity aside from the interior Schwarzschild spacetime.</div></div>","PeriodicalId":48774,"journal":{"name":"Physics of the Dark Universe","volume":"47 ","pages":"Article 101757"},"PeriodicalIF":5.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143100018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Epicyclic oscillations around slowly rotating charged black hole in Bumblebee gravity","authors":"G. Mustafa ,&nbsp;S.K. Maurya ,&nbsp;Phongpichit Channuie ,&nbsp;Abdelmalek Bouzenada ,&nbsp;Assmaa Abd-Elmonem ,&nbsp;Neissrien Alhubieshi","doi":"10.1016/j.dark.2024.101753","DOIUrl":"10.1016/j.dark.2024.101753","url":null,"abstract":"<div><div>We investigate the behavior of test particles orbiting a slowly rotating, axially symmetric, charged black hole within the context of Bumblebee gravity theory, with an emphasis on how the parameters of the model impact particle dynamics. This black hole solution is defined by four primary parameters: the mass <span><math><mi>M</mi></math></span>, the spin parameter <span><math><mi>a</mi></math></span>, the charge <span><math><mi>Q</mi></math></span>, and the Lorentz-violating parameter <span><math><mi>α</mi></math></span>. We give analytical expressions for the radial profiles of specific energy and specific angular momentum associated with stable circular orbits in the equatorial plane. Also, we utilize the effective potential method to analyze the stability of these orbits and the forces acting on the particles. We compute and discuss the radial and latitudinal harmonic oscillation frequencies where the parameters are the mass <span><math><mi>M</mi></math></span>, charge <span><math><mi>Q</mi></math></span>, parameter <span><math><mi>a</mi></math></span>, and the Lorentz-violating parameter <span><math><mi>α</mi></math></span>. We also explore the key characteristics of quasi-periodic oscillations of test particles near stable circular orbits, especially in the equatorial plane. Moreover, we investigate precession effects, including periastron precession and the Lense-Thirring effect. Our results indicate that the motion of particles around the black hole is notably affected by the parameters of the model.</div></div>","PeriodicalId":48774,"journal":{"name":"Physics of the Dark Universe","volume":"47 ","pages":"Article 101753"},"PeriodicalIF":5.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143100055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Shadow and weak gravitational lensing of RN-like BH in plasma","authors":"Asalkhon Alimova ,&nbsp;Ziyodulla Turakhonov ,&nbsp;Farruh Atamurotov ,&nbsp;Ahmadjon Abdujabbarov","doi":"10.1016/j.dark.2024.101749","DOIUrl":"10.1016/j.dark.2024.101749","url":null,"abstract":"<div><div>In this paper, we investigate weak gravitational lensing and shadow radius in the Kalb–Ramond (KR) gravity for an Reissner–Nordström-like (RN-like) black hole (BH). The examination is carried out in three distinct frameworks: uniform plasma, singular isothermal sphere(SIS), and non-singular isothermal sphere (NSIS). When a gravitating object is surrounded by plasma, the lensing angle is determined by the frequency of the electromagnetic wave, plasma dispersion, plasma inhomogeneity, and gravity. Even in uniform plasma, the gravitational photon deflection angle differs from that in a vacuum and depends on photon frequency due to the second effect. We consider both effects and calculate the lensing angle for a significantly non-uniform plasma in the existence of KR gravity. Utilizing observational data from the Event Horizon Telescope (EHT) project for Sgr A*, we have obtained that which range of RN-like black hole’s parameters <span><math><mi>Q</mi></math></span> and <span><math><mi>l</mi></math></span> correspond observations as well as when the Lorentz-violating parameter <span><math><mi>l</mi></math></span> rise, radius of black hole shadow decrease. To connect a relationship with observations data, we examine the magnification and positioning of images produced by lensing, as well as the weak deflection angle and magnification for sources located near various galaxies.</div></div>","PeriodicalId":48774,"journal":{"name":"Physics of the Dark Universe","volume":"47 ","pages":"Article 101749"},"PeriodicalIF":5.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143100056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Heat engine efficiency, particle dynamics and thermodynamic properties of Hayward–Letelier-AdS Black Hole","authors":"Ghulam Fatima ,&nbsp;Faisal Javed ,&nbsp;Arfa Waseem ,&nbsp;Bander Almutairi ,&nbsp;G. Mustafa ,&nbsp;Farruh Atamurotov ,&nbsp;Ertan Güdekli","doi":"10.1016/j.dark.2025.101820","DOIUrl":"10.1016/j.dark.2025.101820","url":null,"abstract":"<div><div>This study investigates the thermodynamic properties and Joule–Thomson effects of Hayward–Letelier-AdS black holes, providing insights into how various physical parameters influence their behavior. A detailed analysis of the lapse function reveals that increasing the cloud of string parameter results in a significant outward movement of the horizon radius, indicating an expansion of the black hole structure. The examination of Joule–Thomson coefficients demonstrates areas of both cooling and heating in the gas surrounding these BHs, with positive values of <span><math><msub><mrow><mi>μ</mi></mrow><mrow><mi>J</mi></mrow></msub></math></span> indicating cooling upon gas expansion and negative values signaling heating. The study also employs isenthalpic and inversion curves to clarify the energy dynamics involved in these processes, illustrating the influences of physical factors on the thermodynamic interactions around black holes. Additionally, the investigation into effective potential aids in understanding the stability of particle orbits around black holes, highlighting the influence of angular momentum and revealing two ISCO radii for considered black holes. The analysis of corrected entropy accounts for quantum effects near the event horizon, indicating that smaller black holes exhibit greater corrected entropy, which reflects notable fluctuations in their thermodynamic behavior. Helmholtz’s free energy and internal energy illustrate the stability of black hole structures, showing a decline in free energy and energy content with an increasing horizon radius. Ultimately, this research enhances the understanding of thermodynamic behavior and particle dynamics in Hayward–Letelier-AdS black holes, laying a robust foundation for future studies on black hole thermodynamics and their cosmological implications.</div></div>","PeriodicalId":48774,"journal":{"name":"Physics of the Dark Universe","volume":"47 ","pages":"Article 101820"},"PeriodicalIF":5.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143100229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Circular motion of test particles, trajectories and QPOs around the non-rotating black hole in the background of the Symmergent gravity","authors":"S.K. Maurya ,&nbsp;G. Mustafa ,&nbsp;Allah Ditta ,&nbsp;Assmaa Abd-Elmonem ,&nbsp;Neissrien Alhubieshi ,&nbsp;Aylin Caliskan ,&nbsp;Ertan Güdekli","doi":"10.1016/j.dark.2025.101806","DOIUrl":"10.1016/j.dark.2025.101806","url":null,"abstract":"<div><div>We explore the circular motion of test particles around the non-rotating black hole in the background of the Symmergent gravity, focusing on how the parameters of the underlying model influence particle motion. The black hole is fully characterized by four parameters, namely, the mass <span><math><mi>M</mi></math></span> of the black hole, the charge <span><math><mi>q</mi></math></span> of the black hole, and two parameters <span><math><mi>η</mi></math></span> and <span><math><mi>α</mi></math></span>, with <span><math><mrow><mi>η</mi><mo>&gt;</mo><mn>1</mn></mrow></math></span> (<span><math><mrow><mi>η</mi><mo>&lt;</mo><mn>1</mn></mrow></math></span>) corresponding to Ads (ds) spacetime. We derive the analytical solution of the energy and angular momentum of test particles as a function of parameters of the underlying model and discuss the stability of circular orbits through an effective potential approach. The innermost stable circular orbits and the effective force exerted on particles are examined. By numerical integration of the equations of motion, we plot the trajectories to investigate the motion of particles orbiting the black hole. Furthermore, we study the epicyclic oscillation of test particles that encircle the black hole near the equatorial plane and derive analytical equations for radial, orbital, and latitudinal frequencies as a function of the parameters of the model. The frequency of periastron precession of particles has also been discussed. Lastly, we consider the collision of particles near the event horizon and examine the center of mass-energy. Our findings reveal that the model parameters influence the motion of the test particles.</div></div>","PeriodicalId":48774,"journal":{"name":"Physics of the Dark Universe","volume":"47 ","pages":"Article 101806"},"PeriodicalIF":5.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143100681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of gravitational collapse exhibiting loop quantum black holes on thermodynamical features and weak gravitational lensing","authors":"Allah Ditta ,&nbsp;Abdelmalek Bouzenada ,&nbsp;G. Mustafa ,&nbsp;Faisal Javed ,&nbsp;Fakhranda Afandi ,&nbsp;Asif Mahmood","doi":"10.1016/j.dark.2025.101818","DOIUrl":"10.1016/j.dark.2025.101818","url":null,"abstract":"<div><div>This paper investigates the loop quantum black hole (LQBH) model, focusing on its thermodynamic stability and gravitational lensing properties. We further examine the thermodynamic characteristics of these black holes, specifically their stability, by analyzing potential phase transitions and energy emissions. In the context of thermodynamic analysis, we discuss the temperature, specific heat, and Gibbs free energy. We also study the effects of weak gravitational lensing within these black holes under different conditions: uniform plasma, non-uniform plasma, and a non-singular isothermal gas with spherical symmetry, calculating the deflection angle and analyzing the influence of black hole parameters on the deflection angle. Additionally, we discuss the magnification of gravitationally lensed images, addressing the distinct lensing effects resulting from uniform and non-uniform plasma by analyzing the total deflection angle in the plasma field.</div></div>","PeriodicalId":48774,"journal":{"name":"Physics of the Dark Universe","volume":"47 ","pages":"Article 101818"},"PeriodicalIF":5.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143100687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Orbital motion and epicyclic oscillations around a black hole with magnetic charge","authors":"G. Mustafa ,&nbsp;Phongpichit Channuie ,&nbsp;Faisal Javed ,&nbsp;Abdelmalek Bouzenada ,&nbsp;S.K. Maurya ,&nbsp;Arzu Cilli ,&nbsp;Ertan Güdekli","doi":"10.1016/j.dark.2024.101765","DOIUrl":"10.1016/j.dark.2024.101765","url":null,"abstract":"<div><div>This paper studies the orbital and epicyclic movements of test particles orbiting a black hole with magnetic charge but no rotation. We generate analytical solutions to explain the radial distributions of particular energy, and angular momentum, for steady circular orbits on the equatorial plane. By utilizing the effective potential technique, we evaluate the stability of these trajectories and the forces that influence particles within the magnetically charged black hole. Our results show how magnetic charge affects the innermost stable circular orbits. Additionally, we calculate the frequencies of radial and latitudinal harmonic oscillations using the parameters of the black hole, taking into account observers who are both nearby and far away. The research involves examining quasi-periodic oscillations around stable equatorial orbits, the precession of the periastron, and assessing particle collisions with a focus on the center of mass energy of the colliding particles.</div></div>","PeriodicalId":48774,"journal":{"name":"Physics of the Dark Universe","volume":"47 ","pages":"Article 101765"},"PeriodicalIF":5.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143156653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}