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| Autori principali: | , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| Soggetti: | |
| Accesso online: | https://arxiv.org/abs/2405.20196 |
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| _version_ | 1866913540588175360 |
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| author | Reinhardt, Jan Niklas Euringer, Philipp Hartwig, Olaf Hechenblaikner, Gerald Heinzel, Gerhard Yamamoto, Kohei |
| author_facet | Reinhardt, Jan Niklas Euringer, Philipp Hartwig, Olaf Hechenblaikner, Gerald Heinzel, Gerhard Yamamoto, Kohei |
| contents | Time-delay interferometry (TDI) is a data processing technique for space-based gravitational-wave detectors to create laser-noise-free equal-optical-path-length interferometers virtually on the ground. It relies on the interspacecraft signal propagation delays, which are delivered by intersatellite ranging monitors. Also delays due to onboard signal propagation and processing have a nonnegligible impact on the TDI combinations. However, these onboard delays were only partially considered in previous TDI-related research; onboard optical path lengths have been neglected so far. In this paper, we study onboard optical path lengths in TDI. We derive analytical models for their coupling to the second-generation TDI Michelson combinations and verify these models numerically. Furthermore, we derive a compensation scheme for onboard optical path lengths in TDI and validate its performance via numerical simulations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_20196 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Time-delay interferometry with onboard optical delays Reinhardt, Jan Niklas Euringer, Philipp Hartwig, Olaf Hechenblaikner, Gerald Heinzel, Gerhard Yamamoto, Kohei General Relativity and Quantum Cosmology Instrumentation and Methods for Astrophysics Time-delay interferometry (TDI) is a data processing technique for space-based gravitational-wave detectors to create laser-noise-free equal-optical-path-length interferometers virtually on the ground. It relies on the interspacecraft signal propagation delays, which are delivered by intersatellite ranging monitors. Also delays due to onboard signal propagation and processing have a nonnegligible impact on the TDI combinations. However, these onboard delays were only partially considered in previous TDI-related research; onboard optical path lengths have been neglected so far. In this paper, we study onboard optical path lengths in TDI. We derive analytical models for their coupling to the second-generation TDI Michelson combinations and verify these models numerically. Furthermore, we derive a compensation scheme for onboard optical path lengths in TDI and validate its performance via numerical simulations. |
| title | Time-delay interferometry with onboard optical delays |
| topic | General Relativity and Quantum Cosmology Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2405.20196 |