Light trajectory and shadow shape in the rotating naked singularity
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...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2022-09-01
|
| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-022-10638-w |
| _version_ | 1811211694537441280 |
|---|---|
| author | Vishva Patel Divya Tahelyani Ashok B. Joshi Dipanjan Dey Pankaj S. Joshi |
| author_facet | Vishva Patel Divya Tahelyani Ashok B. Joshi Dipanjan Dey Pankaj S. Joshi |
| author_sort | Vishva Patel |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-04-12T05:16:30Z |
| format | Article |
| id | doaj.art-eae2664fe3f245e79edf1a1e429e8262 |
| institution | Directory Open Access Journal |
| issn | 1434-6052 |
| language | English |
| last_indexed | 2024-04-12T05:16:30Z |
| publishDate | 2022-09-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-eae2664fe3f245e79edf1a1e429e82622022-12-22T03:46:37ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522022-09-0182911010.1140/epjc/s10052-022-10638-wLight trajectory and shadow shape in the rotating naked singularityVishva Patel0Divya Tahelyani1Ashok B. Joshi2Dipanjan Dey3Pankaj S. Joshi4International Center for Cosmology, Charusat UniversityInternational Center for Cosmology, Charusat UniversityInternational Center for Cosmology, Charusat UniversityInternational Center for Cosmology, Charusat UniversityInternational Center for Cosmology, Charusat UniversityAbstract 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.https://doi.org/10.1140/epjc/s10052-022-10638-w |
| spellingShingle | Vishva Patel Divya Tahelyani Ashok B. Joshi Dipanjan Dey Pankaj S. Joshi Light trajectory and shadow shape in the rotating naked singularity European Physical Journal C: Particles and Fields |
| title | Light trajectory and shadow shape in the rotating naked singularity |
| title_full | Light trajectory and shadow shape in the rotating naked singularity |
| title_fullStr | Light trajectory and shadow shape in the rotating naked singularity |
| title_full_unstemmed | Light trajectory and shadow shape in the rotating naked singularity |
| title_short | Light trajectory and shadow shape in the rotating naked singularity |
| title_sort | light trajectory and shadow shape in the rotating naked singularity |
| url | https://doi.org/10.1140/epjc/s10052-022-10638-w |
| work_keys_str_mv | AT vishvapatel lighttrajectoryandshadowshapeintherotatingnakedsingularity AT divyatahelyani lighttrajectoryandshadowshapeintherotatingnakedsingularity AT ashokbjoshi lighttrajectoryandshadowshapeintherotatingnakedsingularity AT dipanjandey lighttrajectoryandshadowshapeintherotatingnakedsingularity AT pankajsjoshi lighttrajectoryandshadowshapeintherotatingnakedsingularity |