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| Main Author: | |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2510.24005 |
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| _version_ | 1866914117794660352 |
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| author | Wang, Yiran |
| author_facet | Wang, Yiran |
| contents | The integrated Sachs-Wolfe (ISW) effect describes how photons are gravitationally redshifted, producing anisotropies in the Cosmic Microwave Background. We study the inverse problem and show that primordial gravitational perturbations, in particular their polarizations in the transversally traceless (TT) gauge can be identified from the local observation of the ISW effect. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_24005 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | On finding gravitational waves from anisotropies of the Cosmic Microwave Background Wang, Yiran General Relativity and Quantum Cosmology Analysis of PDEs The integrated Sachs-Wolfe (ISW) effect describes how photons are gravitationally redshifted, producing anisotropies in the Cosmic Microwave Background. We study the inverse problem and show that primordial gravitational perturbations, in particular their polarizations in the transversally traceless (TT) gauge can be identified from the local observation of the ISW effect. |
| title | On finding gravitational waves from anisotropies of the Cosmic Microwave Background |
| topic | General Relativity and Quantum Cosmology Analysis of PDEs |
| url | https://arxiv.org/abs/2510.24005 |