GFH-v2 Pipeline for Searches of Long-Transient Gravitational Waves from Newborn Magnetars
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866916012349194240 |
|---|---|
| author | Menon, Sandhya Sajith Pierini, Lorenzo Astone, Pia Palomba, Cristiano Silvestri, Lorenzo D'Antonio, Sabrina Dall'Osso, Simone Tehrani, Francesco Safai Pra, Stefano Dal Dinatale, Gaetano Frasca, Sergio Guetta, Dafne Leaci, Paola Orlandi, Alessio |
| author_facet | Menon, Sandhya Sajith Pierini, Lorenzo Astone, Pia Palomba, Cristiano Silvestri, Lorenzo D'Antonio, Sabrina Dall'Osso, Simone Tehrani, Francesco Safai Pra, Stefano Dal Dinatale, Gaetano Frasca, Sergio Guetta, Dafne Leaci, Paola Orlandi, Alessio |
| contents | This paper presents an enhanced methodology for searching long transient gravitational waves associated with a newborn magnetar, with particular focus on the regime in which the early spin-down is dominated by gravitational-wave emission. The analysis is performed using a strongly improved version of the generalized Frequency Hough Transform algorithm, called GFH-v2. We describe the main developments introduced relative to the original implementation and outline the optimized parameter-space selection used in the search. We then compute the theoretical sensitivity of the method and compare it with an empirical sensitivity estimate obtained by injecting simulated signals into LIGO-Virgo-KAGRA O4a data. The updated framework achieves improved sensitivity and computational performance. These results provide a robust basis for future directed searches for long-transient gravitational-wave signals from core-collapse supernovae and other transient events in current and upcoming observing runs. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_09878 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | GFH-v2 Pipeline for Searches of Long-Transient Gravitational Waves from Newborn Magnetars Menon, Sandhya Sajith Pierini, Lorenzo Astone, Pia Palomba, Cristiano Silvestri, Lorenzo D'Antonio, Sabrina Dall'Osso, Simone Tehrani, Francesco Safai Pra, Stefano Dal Dinatale, Gaetano Frasca, Sergio Guetta, Dafne Leaci, Paola Orlandi, Alessio Instrumentation and Methods for Astrophysics General Relativity and Quantum Cosmology This paper presents an enhanced methodology for searching long transient gravitational waves associated with a newborn magnetar, with particular focus on the regime in which the early spin-down is dominated by gravitational-wave emission. The analysis is performed using a strongly improved version of the generalized Frequency Hough Transform algorithm, called GFH-v2. We describe the main developments introduced relative to the original implementation and outline the optimized parameter-space selection used in the search. We then compute the theoretical sensitivity of the method and compare it with an empirical sensitivity estimate obtained by injecting simulated signals into LIGO-Virgo-KAGRA O4a data. The updated framework achieves improved sensitivity and computational performance. These results provide a robust basis for future directed searches for long-transient gravitational-wave signals from core-collapse supernovae and other transient events in current and upcoming observing runs. |
| title | GFH-v2 Pipeline for Searches of Long-Transient Gravitational Waves from Newborn Magnetars |
| topic | Instrumentation and Methods for Astrophysics General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2512.09878 |