Prominence: A discriminator of gravitational wave signals
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arXiv
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| Auteurs principaux: | , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866915483873181696 |
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| author | Gonçalves, João Marfatia, Danny Morais, António P. |
| author_facet | Gonçalves, João Marfatia, Danny Morais, António P. |
| contents | The concept of prominence is familiar to signal engineers, topographers and mountaineers. We introduce Prominence $\mathcal P$ as a discriminator of gravitational wave (GW) signals. We treat black hole and neutron star binaries as astrophysical background sources, and show how $\mathcal P$ can be used to distinguish between GW spectra produced by first-order phase transitions, domain walls and cosmic strings, and combinations thereof. Prominence can also be used to discriminate between these and off-piste sources of GWs. The uncertainty in the measured energy density in GWs at Pulsar Timing Arrays needs to be smaller than $\sim 4\%$ for $\mathcal{P}$ to achieve discrimination at 3$σ$. LISA and ET data are expected to have sufficiently small uncertainties that Prominence can play a central role in their analysis. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_04384 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Prominence: A discriminator of gravitational wave signals Gonçalves, João Marfatia, Danny Morais, António P. High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Experiment The concept of prominence is familiar to signal engineers, topographers and mountaineers. We introduce Prominence $\mathcal P$ as a discriminator of gravitational wave (GW) signals. We treat black hole and neutron star binaries as astrophysical background sources, and show how $\mathcal P$ can be used to distinguish between GW spectra produced by first-order phase transitions, domain walls and cosmic strings, and combinations thereof. Prominence can also be used to discriminate between these and off-piste sources of GWs. The uncertainty in the measured energy density in GWs at Pulsar Timing Arrays needs to be smaller than $\sim 4\%$ for $\mathcal{P}$ to achieve discrimination at 3$σ$. LISA and ET data are expected to have sufficiently small uncertainties that Prominence can play a central role in their analysis. |
| title | Prominence: A discriminator of gravitational wave signals |
| topic | High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2509.04384 |