The new generation lunar gravitational wave detectors: sky map resolution and joint analysis
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866910204059189248 |
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| author | Zhang, Xiaolin Yu, Chengye Li, Haoran Kazempour, Sobhan Li, Mingqiu Sun, Sichun |
| author_facet | Zhang, Xiaolin Yu, Chengye Li, Haoran Kazempour, Sobhan Li, Mingqiu Sun, Sichun |
| contents | Lunar-based gravitational-wave interferometry is a fascinating endeavor, and was proposed as a promising approach to bridge the observational gap between space-borne and ground-based detectors. In this work, we adopt the Fisher-matrix method to examine the angular-resolution performance of the newly proposed Crater Interferometry Gravitational-wave Observatory (CIGO) on the lunar crater rim near the north pole, together with TianQin and LISA, for monochromatic sources in the 0.1-10 Hz band. We find that above 0.1 Hz, CIGO achieves better localization accuracy than the other two space-based missions and dominates the combined detector network's performance, provided that lunar noise mitigation is achieved in the 0.1-2.87 Hz frequency range. We further explore an upgraded Tetrahedron configuration, TCIGO, with a fourth station at the bottom of a crater, which forms a regular tetrahedral constellation on the lunar surface. The result shows that TCIGO yields a five-fold improvement in angular-resolution capability over CIGO and gets better sky coverage across the target frequency band. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_23556 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | The new generation lunar gravitational wave detectors: sky map resolution and joint analysis Zhang, Xiaolin Yu, Chengye Li, Haoran Kazempour, Sobhan Li, Mingqiu Sun, Sichun General Relativity and Quantum Cosmology Instrumentation and Methods for Astrophysics High Energy Physics - Phenomenology Instrumentation and Detectors Lunar-based gravitational-wave interferometry is a fascinating endeavor, and was proposed as a promising approach to bridge the observational gap between space-borne and ground-based detectors. In this work, we adopt the Fisher-matrix method to examine the angular-resolution performance of the newly proposed Crater Interferometry Gravitational-wave Observatory (CIGO) on the lunar crater rim near the north pole, together with TianQin and LISA, for monochromatic sources in the 0.1-10 Hz band. We find that above 0.1 Hz, CIGO achieves better localization accuracy than the other two space-based missions and dominates the combined detector network's performance, provided that lunar noise mitigation is achieved in the 0.1-2.87 Hz frequency range. We further explore an upgraded Tetrahedron configuration, TCIGO, with a fourth station at the bottom of a crater, which forms a regular tetrahedral constellation on the lunar surface. The result shows that TCIGO yields a five-fold improvement in angular-resolution capability over CIGO and gets better sky coverage across the target frequency band. |
| title | The new generation lunar gravitational wave detectors: sky map resolution and joint analysis |
| topic | General Relativity and Quantum Cosmology Instrumentation and Methods for Astrophysics High Energy Physics - Phenomenology Instrumentation and Detectors |
| url | https://arxiv.org/abs/2512.23556 |