Pulsar timing in the Galactic Center
Fuente:
arXiv
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| Autori principali: | , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866910259059097600 |
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| author | Della Monica, Riccardo de Martino, Ivan |
| author_facet | Della Monica, Riccardo de Martino, Ivan |
| contents | We propose a novel approach which implements the relativistic calculations of the photon travel time into a robust timing model for pulsars orbiting supermassive black holes. We demonstrate that timing models relying on the lowest-order (1PN) post-Newtonian approximation can produce significant discrepancies in strong-field configurations, affecting the predicted relativistic times of arrival at an Earth-based observatory. We also show how a misestimation of the pulsar parameters can lead to the appearance of phase-dependent residual, which hints at a tremendous constraining power of the binary and intrinsic parameters for timing observations of potential pulsars at the Galactic Center. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_03912 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Pulsar timing in the Galactic Center Della Monica, Riccardo de Martino, Ivan General Relativity and Quantum Cosmology We propose a novel approach which implements the relativistic calculations of the photon travel time into a robust timing model for pulsars orbiting supermassive black holes. We demonstrate that timing models relying on the lowest-order (1PN) post-Newtonian approximation can produce significant discrepancies in strong-field configurations, affecting the predicted relativistic times of arrival at an Earth-based observatory. We also show how a misestimation of the pulsar parameters can lead to the appearance of phase-dependent residual, which hints at a tremendous constraining power of the binary and intrinsic parameters for timing observations of potential pulsars at the Galactic Center. |
| title | Pulsar timing in the Galactic Center |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2501.03912 |