Light trajectory and shadow shape in the rotating naked singularity
In this paper, we investigate the light trajectories and shadow properties in the rotating version of null naked singularity (NNS) spacetime which is derived using the Newman–Janis algorithm without complexification method. We discuss some of the geometrical properties and causal structure of Rotati...
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| Published in | The European physical journal. C, Particles and fields Vol. 82; no. 9; pp. 1 - 10 |
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| Main Authors | , , , , |
| Format | Journal Article |
| Language | English |
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01.09.2022
Springer Springer Nature B.V SpringerOpen |
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| Abstract | In this paper, we investigate the light trajectories and shadow properties in the rotating version of null naked singularity (NNS) spacetime which is derived using the Newman–Janis algorithm without complexification method. We discuss some of the geometrical properties and causal structure of Rotating Naked Singularity (RNS) spacetime. The gravitational lensing in a rotating naked singularity is analyzed, and the results are compared to those of a Kerr black hole. In the case of a Kerr black hole, the photon sphere exists for both prograde and retrograde photon orbits, whereas for RNS, the photon sphere exists only for retrograde photon orbits. As a result, the naked singularity projects an arc-shaped shadow that differs from the contour-shaped shadow cast by a Kerr black hole. |
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| AbstractList | In this paper, we investigate the light trajectories and shadow properties in the rotating version of null naked singularity (NNS) spacetime which is derived using the Newman–Janis algorithm without complexification method. We discuss some of the geometrical properties and causal structure of Rotating Naked Singularity (RNS) spacetime. The gravitational lensing in a rotating naked singularity is analyzed, and the results are compared to those of a Kerr black hole. In the case of a Kerr black hole, the photon sphere exists for both prograde and retrograde photon orbits, whereas for RNS, the photon sphere exists only for retrograde photon orbits. As a result, the naked singularity projects an arc-shaped shadow that differs from the contour-shaped shadow cast by a Kerr black hole. Abstract In this paper, we investigate the light trajectories and shadow properties in the rotating version of null naked singularity (NNS) spacetime which is derived using the Newman–Janis algorithm without complexification method. We discuss some of the geometrical properties and causal structure of Rotating Naked Singularity (RNS) spacetime. The gravitational lensing in a rotating naked singularity is analyzed, and the results are compared to those of a Kerr black hole. In the case of a Kerr black hole, the photon sphere exists for both prograde and retrograde photon orbits, whereas for RNS, the photon sphere exists only for retrograde photon orbits. As a result, the naked singularity projects an arc-shaped shadow that differs from the contour-shaped shadow cast by a Kerr black hole. Abstract In this paper, we investigate the light trajectories and shadow properties in the rotating version of null naked singularity (NNS) spacetime which is derived using the Newman–Janis algorithm without complexification method. We discuss some of the geometrical properties and causal structure of Rotating Naked Singularity (RNS) spacetime. The gravitational lensing in a rotating naked singularity is analyzed, and the results are compared to those of a Kerr black hole. In the case of a Kerr black hole, the photon sphere exists for both prograde and retrograde photon orbits, whereas for RNS, the photon sphere exists only for retrograde photon orbits. As a result, the naked singularity projects an arc-shaped shadow that differs from the contour-shaped shadow cast by a Kerr black hole. |
| ArticleNumber | 798 |
| Audience | Academic |
| Author | Tahelyani, Divya Joshi, Pankaj S. Joshi, Ashok B. Dey, Dipanjan Patel, Vishva |
| Author_xml | – sequence: 1 givenname: Vishva surname: Patel fullname: Patel, Vishva organization: International Center for Cosmology, Charusat University – sequence: 2 givenname: Divya surname: Tahelyani fullname: Tahelyani, Divya organization: International Center for Cosmology, Charusat University – sequence: 3 givenname: Ashok B. orcidid: 0000-0002-3314-0769 surname: Joshi fullname: Joshi, Ashok B. email: gen.rel.joshi@gmail.com organization: International Center for Cosmology, Charusat University – sequence: 4 givenname: Dipanjan surname: Dey fullname: Dey, Dipanjan organization: International Center for Cosmology, Charusat University – sequence: 5 givenname: Pankaj S. surname: Joshi fullname: Joshi, Pankaj S. organization: International Center for Cosmology, Charusat University, International Centre for Space and Cosmology, Ahmedabad University |
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| CitedBy_id | crossref_primary_10_1103_PhysRevD_107_064036 crossref_primary_10_1016_j_dark_2024_101497 crossref_primary_10_1142_S0218271823500165 crossref_primary_10_1088_1361_6382_ad2318 crossref_primary_10_1103_PhysRevD_109_064021 crossref_primary_10_1103_PhysRevD_108_104034 |
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| Snippet | In this paper, we investigate the light trajectories and shadow properties in the rotating version of null naked singularity (NNS) spacetime which is derived... Abstract In this paper, we investigate the light trajectories and shadow properties in the rotating version of null naked singularity (NNS) spacetime which is... Abstract In this paper, we investigate the light trajectories and shadow properties in the rotating version of null naked singularity (NNS) spacetime which is... |
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| SubjectTerms | Algorithms Astronomy Astrophysics and Cosmology Black holes Comparative analysis Coordinate transformations Cosmology Elementary Particles Gravitational lenses Hadrons Heavy Ions Light Measurement Science and Instrumentation Nuclear Energy Nuclear Physics Photons Physics Physics and Astronomy Quantum Field Theories Quantum Field Theory Regular Article - Theoretical Physics Relativity Retrograde orbits Rotation Shadows Singularities Spacetime String Theory Theory of relativity |
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| Title | Light trajectory and shadow shape in the rotating naked singularity |
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