Magnetized and Magnetically Charged Particles Motion around Regular Bardeen Black Hole in 4D Einstein Gauss–Bonnet Gravity
In this paper, we study the horizon properties and scalar invariants of the spacetime around a regular black hole (BH) in 4D Einstein Gauss-Bonnet (4D EGB) gravity. It is observed that the presence of both Gauss-Bonnet (GB) coupling and magnetic charge parameters causes the shrinking of the outer ho...
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MDPI AG
2022-10-01
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| Series: | Universe |
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| Online Access: | https://www.mdpi.com/2218-1997/8/10/549 |
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| author | Javlon Rayimbaev Dilshodbek Bardiev Farrux Abdulxamidov Ahmadjon Abdujabbarov Bobomurat Ahmedov |
| author_facet | Javlon Rayimbaev Dilshodbek Bardiev Farrux Abdulxamidov Ahmadjon Abdujabbarov Bobomurat Ahmedov |
| author_sort | Javlon Rayimbaev |
| collection | DOAJ |
| description | In this paper, we study the horizon properties and scalar invariants of the spacetime around a regular black hole (BH) in 4D Einstein Gauss-Bonnet (4D EGB) gravity. It is observed that the presence of both Gauss-Bonnet (GB) coupling and magnetic charge parameters causes the shrinking of the outer horizon. We find that the range of the GB parameter <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>α</mi><mo>/</mo><msup><mi>M</mi><mn>2</mn></msup><mo>∈</mo><mrow><mo>(</mo><mo>−</mo><mn>0.15869</mn><mo>,</mo><mn>1</mn><mo>)</mo></mrow></mrow></semantics></math></inline-formula>, and the extreme value of magnetic charge reaches up to <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>g</mi><mi>extr</mi></msub><mo>=</mo><mn>0.886</mn><mi>M</mi></mrow></semantics></math></inline-formula>, which allows for the existence of a BH horizon, while it is <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>g</mi><mi>extr</mi></msub><mo>=</mo><mn>0.7698</mn><mi>M</mi></mrow></semantics></math></inline-formula> for pure Bardeen BH. We also investigate the dynamics of magnetized particles around the magnetically charged Bardeen BH, assuming the particle’s motion occurs in the equatorial plane in the proper observation frame, and the direction of the magnetic dipole moment of the particles is always kept radially and its magnitude is constant. Moreover, the dynamics of magnetically charged particles are also studied, and it is shown that both the energy and angular momentum of the particles corresponding to circular orbits increases with the increase of their magnetic charge. Finally, we also study collisions of magnetized, electrically neutral, and magnetically charged particles around the Bardeen BHs, where we provide analyses of critical angular momentum that may allow collision of the particles near-horizon radius, producing enormous values of center of mass energy of the collisions. |
| first_indexed | 2024-03-09T19:25:09Z |
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| issn | 2218-1997 |
| language | English |
| last_indexed | 2024-03-09T19:25:09Z |
| publishDate | 2022-10-01 |
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| spelling | doaj.art-b31e1ec5e0f8450e840a0c64d0bebe322023-11-24T03:02:09ZengMDPI AGUniverse2218-19972022-10-0181054910.3390/universe8100549Magnetized and Magnetically Charged Particles Motion around Regular Bardeen Black Hole in 4D Einstein Gauss–Bonnet GravityJavlon Rayimbaev0Dilshodbek Bardiev1Farrux Abdulxamidov2Ahmadjon Abdujabbarov3Bobomurat Ahmedov4Ulugh Beg Astronomical Institute, Astronomy St. 33, Tashkent 100052, UzbekistanResearch Centre for Theoretical Physics and Astrophysics, Institute of Physics, Silesian University in Opava, Bezručovo nám. 13, CZ-74601 Opava, Czech RepublicInstitute of Nuclear Physics, Ulugbek 1, Tashkent 100214, UzbekistanUlugh Beg Astronomical Institute, Astronomy St. 33, Tashkent 100052, UzbekistanUlugh Beg Astronomical Institute, Astronomy St. 33, Tashkent 100052, UzbekistanIn this paper, we study the horizon properties and scalar invariants of the spacetime around a regular black hole (BH) in 4D Einstein Gauss-Bonnet (4D EGB) gravity. It is observed that the presence of both Gauss-Bonnet (GB) coupling and magnetic charge parameters causes the shrinking of the outer horizon. We find that the range of the GB parameter <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>α</mi><mo>/</mo><msup><mi>M</mi><mn>2</mn></msup><mo>∈</mo><mrow><mo>(</mo><mo>−</mo><mn>0.15869</mn><mo>,</mo><mn>1</mn><mo>)</mo></mrow></mrow></semantics></math></inline-formula>, and the extreme value of magnetic charge reaches up to <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>g</mi><mi>extr</mi></msub><mo>=</mo><mn>0.886</mn><mi>M</mi></mrow></semantics></math></inline-formula>, which allows for the existence of a BH horizon, while it is <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>g</mi><mi>extr</mi></msub><mo>=</mo><mn>0.7698</mn><mi>M</mi></mrow></semantics></math></inline-formula> for pure Bardeen BH. We also investigate the dynamics of magnetized particles around the magnetically charged Bardeen BH, assuming the particle’s motion occurs in the equatorial plane in the proper observation frame, and the direction of the magnetic dipole moment of the particles is always kept radially and its magnitude is constant. Moreover, the dynamics of magnetically charged particles are also studied, and it is shown that both the energy and angular momentum of the particles corresponding to circular orbits increases with the increase of their magnetic charge. Finally, we also study collisions of magnetized, electrically neutral, and magnetically charged particles around the Bardeen BHs, where we provide analyses of critical angular momentum that may allow collision of the particles near-horizon radius, producing enormous values of center of mass energy of the collisions.https://www.mdpi.com/2218-1997/8/10/549black holesmagnetic fieldsmagnetized particlesrelativistic starsorbits |
| spellingShingle | Javlon Rayimbaev Dilshodbek Bardiev Farrux Abdulxamidov Ahmadjon Abdujabbarov Bobomurat Ahmedov Magnetized and Magnetically Charged Particles Motion around Regular Bardeen Black Hole in 4D Einstein Gauss–Bonnet Gravity Universe black holes magnetic fields magnetized particles relativistic stars orbits |
| title | Magnetized and Magnetically Charged Particles Motion around Regular Bardeen Black Hole in 4D Einstein Gauss–Bonnet Gravity |
| title_full | Magnetized and Magnetically Charged Particles Motion around Regular Bardeen Black Hole in 4D Einstein Gauss–Bonnet Gravity |
| title_fullStr | Magnetized and Magnetically Charged Particles Motion around Regular Bardeen Black Hole in 4D Einstein Gauss–Bonnet Gravity |
| title_full_unstemmed | Magnetized and Magnetically Charged Particles Motion around Regular Bardeen Black Hole in 4D Einstein Gauss–Bonnet Gravity |
| title_short | Magnetized and Magnetically Charged Particles Motion around Regular Bardeen Black Hole in 4D Einstein Gauss–Bonnet Gravity |
| title_sort | magnetized and magnetically charged particles motion around regular bardeen black hole in 4d einstein gauss bonnet gravity |
| topic | black holes magnetic fields magnetized particles relativistic stars orbits |
| url | https://www.mdpi.com/2218-1997/8/10/549 |
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