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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2503.16140 |
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| _version_ | 1866910886396952576 |
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| author | Simon, Niña Zambale Revilla, Miguel Hermosa, Nathaniel |
| author_facet | Simon, Niña Zambale Revilla, Miguel Hermosa, Nathaniel |
| contents | We propose a method to detect exoplanets based on their host star's intensity centroid after it passes thru a vortex filter. Based on our calculations with planets in face-on orbits, exoplanets with relative proximity to their host stars and with low mass ratios ($m_p/m_s$) can have discernible signals that can be amplified by the topological charge $\ell$ of the vortex filter. For exoplanets that have higher mass ratios and are far from their host stars, a clear signal can also be obtained but these are not affected by the value of $\ell$ and other planet detection methods may be more suitable. We present a simple table-top optical experiment to support our calculations. Our proposed method adds to the arsenal of techniques for astrometric exoplanet detection. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_16140 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Astrometric detection of exoplanets in face-on orbits using vortex filters Simon, Niña Zambale Revilla, Miguel Hermosa, Nathaniel Instrumentation and Methods for Astrophysics Earth and Planetary Astrophysics Optics We propose a method to detect exoplanets based on their host star's intensity centroid after it passes thru a vortex filter. Based on our calculations with planets in face-on orbits, exoplanets with relative proximity to their host stars and with low mass ratios ($m_p/m_s$) can have discernible signals that can be amplified by the topological charge $\ell$ of the vortex filter. For exoplanets that have higher mass ratios and are far from their host stars, a clear signal can also be obtained but these are not affected by the value of $\ell$ and other planet detection methods may be more suitable. We present a simple table-top optical experiment to support our calculations. Our proposed method adds to the arsenal of techniques for astrometric exoplanet detection. |
| title | Astrometric detection of exoplanets in face-on orbits using vortex filters |
| topic | Instrumentation and Methods for Astrophysics Earth and Planetary Astrophysics Optics |
| url | https://arxiv.org/abs/2503.16140 |