Search for Gravitational Wave Memory in PPTA and EPTA Data: A Complete Signal Model
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arXiv
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| Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| author | Tomson, Sharon Mary Goncharov, Boris van Haasteren, Rutger Srinivasan, Rahul Barausse, Enrico Wen, Yirong Wang, Jingbo Antoniadis, John Bhat, N. D. Ramesh Chen, Zu-Cheng Cognard, Ismael Di Marco, Valentina Hu, Huanchen Janssen, Gemma H. Kramer, Michael Ling, Wenhua Liu, Kuo Mishra, Saurav Perrodin, Delphine Possenti, Andrea Russell, Christopher J. Shannon, Ryan M. Theureau, Gilles Wang, Shuangqiang |
| author_facet | Tomson, Sharon Mary Goncharov, Boris van Haasteren, Rutger Srinivasan, Rahul Barausse, Enrico Wen, Yirong Wang, Jingbo Antoniadis, John Bhat, N. D. Ramesh Chen, Zu-Cheng Cognard, Ismael Di Marco, Valentina Hu, Huanchen Janssen, Gemma H. Kramer, Michael Ling, Wenhua Liu, Kuo Mishra, Saurav Perrodin, Delphine Possenti, Andrea Russell, Christopher J. Shannon, Ryan M. Theureau, Gilles Wang, Shuangqiang |
| contents | We perform searches for gravitational wave memory in the data of two major Pulsar Timing Array (PTA) experiments located in Europe and Australia. Supermassive black hole binaries (SMBHBs) are the primary sources of gravitational waves in PTA experiments. We develop and carry out the first search for late inspirals and mergers of these sources based on full numerical relativity waveforms with null (nonlinear) gravitational wave memory. Additionally, we search for generic bursts of null gravitational wave memory, exploring possibilities of reducing the computational cost of these searches through kernel density and normalizing flow approximation of the posteriors. We rule out the mergers of SMBHBs with a chirp mass of 10^10 Solar Mass up to 700 Mpc over 18 years of observation at 95% credibility. We rule out the observation of generic displacement memory bursts with strain amplitudes > 10^-14 in brief periods of the observation time but across the sky, or over the whole observation time but for certain preferred sky positions, at 95%$credibility. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_14650 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Search for Gravitational Wave Memory in PPTA and EPTA Data: A Complete Signal Model Tomson, Sharon Mary Goncharov, Boris van Haasteren, Rutger Srinivasan, Rahul Barausse, Enrico Wen, Yirong Wang, Jingbo Antoniadis, John Bhat, N. D. Ramesh Chen, Zu-Cheng Cognard, Ismael Di Marco, Valentina Hu, Huanchen Janssen, Gemma H. Kramer, Michael Ling, Wenhua Liu, Kuo Mishra, Saurav Perrodin, Delphine Possenti, Andrea Russell, Christopher J. Shannon, Ryan M. Theureau, Gilles Wang, Shuangqiang General Relativity and Quantum Cosmology Astrophysics of Galaxies High Energy Astrophysical Phenomena We perform searches for gravitational wave memory in the data of two major Pulsar Timing Array (PTA) experiments located in Europe and Australia. Supermassive black hole binaries (SMBHBs) are the primary sources of gravitational waves in PTA experiments. We develop and carry out the first search for late inspirals and mergers of these sources based on full numerical relativity waveforms with null (nonlinear) gravitational wave memory. Additionally, we search for generic bursts of null gravitational wave memory, exploring possibilities of reducing the computational cost of these searches through kernel density and normalizing flow approximation of the posteriors. We rule out the mergers of SMBHBs with a chirp mass of 10^10 Solar Mass up to 700 Mpc over 18 years of observation at 95% credibility. We rule out the observation of generic displacement memory bursts with strain amplitudes > 10^-14 in brief periods of the observation time but across the sky, or over the whole observation time but for certain preferred sky positions, at 95%$credibility. |
| title | Search for Gravitational Wave Memory in PPTA and EPTA Data: A Complete Signal Model |
| topic | General Relativity and Quantum Cosmology Astrophysics of Galaxies High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2512.14650 |