Kilometer-baseline interferometry: science drivers for the next generation instrument
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866914996928118784 |
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| author | Bourdarot, G. Eisenhauer, F. |
| author_facet | Bourdarot, G. Eisenhauer, F. |
| contents | Infrared interferometry has seen a revolution over the last few years. The advent of GRAVITY+ is about to enable high-contrast observations, all-sky coverage and faint science up to K=21, with the implementation on 8m-class telescope of extreme adaptive optics, wide-field observations, and soon laser guide stars, following a long-term vision of technological and infrastructure development at VLTI. This major progress in sensitivity lift a fundamental limitation of infrared interferometry, namely the brightness temperature achievable with this technique down to milli-arcsecond resolution imaging. This change of paradigm is a crucial element for the expansion of current arrays to a facility up to one to ten kilometer baselines. Micro-arcsecond scales imaging in the infrared on thermal objects, reaching the highest angular resolution possible even compared to VLBI, could offer a unique window in observational astronomy for the next generation instrument. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2410_22063 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Kilometer-baseline interferometry: science drivers for the next generation instrument Bourdarot, G. Eisenhauer, F. Instrumentation and Methods for Astrophysics Cosmology and Nongalactic Astrophysics Earth and Planetary Astrophysics Solar and Stellar Astrophysics Infrared interferometry has seen a revolution over the last few years. The advent of GRAVITY+ is about to enable high-contrast observations, all-sky coverage and faint science up to K=21, with the implementation on 8m-class telescope of extreme adaptive optics, wide-field observations, and soon laser guide stars, following a long-term vision of technological and infrastructure development at VLTI. This major progress in sensitivity lift a fundamental limitation of infrared interferometry, namely the brightness temperature achievable with this technique down to milli-arcsecond resolution imaging. This change of paradigm is a crucial element for the expansion of current arrays to a facility up to one to ten kilometer baselines. Micro-arcsecond scales imaging in the infrared on thermal objects, reaching the highest angular resolution possible even compared to VLBI, could offer a unique window in observational astronomy for the next generation instrument. |
| title | Kilometer-baseline interferometry: science drivers for the next generation instrument |
| topic | Instrumentation and Methods for Astrophysics Cosmology and Nongalactic Astrophysics Earth and Planetary Astrophysics Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2410.22063 |