Shadow of a collapsing star in a regular spacetime
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arXiv
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866917556921565184 |
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| author | Nunez, Daniel Degollado, Juan Carlos |
| author_facet | Nunez, Daniel Degollado, Juan Carlos |
| contents | We describe the dynamical formation of the shadow of a collapsing star in a Hayward spacetime in terms of an observer far away from the center and a free falling observer. By solving the time-like and light-like radial geodesics we determine the angular size of the shadow as a function of time. We found that the formation of the shadow is a finite process for both observers and its size is affected by the Hayward spacetime parameters. We consider several scenarios, from the Schwarzschild limit to an extreme Hayward black hole. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2312_17559 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Shadow of a collapsing star in a regular spacetime Nunez, Daniel Degollado, Juan Carlos General Relativity and Quantum Cosmology We describe the dynamical formation of the shadow of a collapsing star in a Hayward spacetime in terms of an observer far away from the center and a free falling observer. By solving the time-like and light-like radial geodesics we determine the angular size of the shadow as a function of time. We found that the formation of the shadow is a finite process for both observers and its size is affected by the Hayward spacetime parameters. We consider several scenarios, from the Schwarzschild limit to an extreme Hayward black hole. |
| title | Shadow of a collapsing star in a regular spacetime |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2312.17559 |