A Novel Search Technique for Low-Frequency Periodic Gravitational Waves
We quantify the advantages of a recently proposed data processing technique to search for continuous gravitational wave (GW) signals from isolated rotating asymmetric neutron stars in data measured by ground-based GW interferometers. This technique relies on the symmetry of the motion around the Sun...
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MDPI AG
2025-05-01
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| author | Harshit Raj Sanjeev Dhurandhar Massimo Tinto |
| author_facet | Harshit Raj Sanjeev Dhurandhar Massimo Tinto |
| author_sort | Harshit Raj |
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| description | We quantify the advantages of a recently proposed data processing technique to search for continuous gravitational wave (GW) signals from isolated rotating asymmetric neutron stars in data measured by ground-based GW interferometers. This technique relies on the symmetry of the motion around the Sun of an Earth-bound gravitational wave interferometer. By multiplying the measured data time series with a half-year time-shifted copy of it, we obtain two advantages: (i) the main Doppler phase modulation of a monochromatic gravitational wave signal is exactly removed, and (ii) the signal in the product data are located at twice the GW signal frequency. The first significantly reduces the size of the signal’s parameter space over which a search is to be performed. The second is advantageous at low frequencies; we find that, with currently available computer processing speeds, this technique is capable of achieving sensitivity that is comparable to or even better than coherent and other possibly non-coherent methods. Further, since our proposed method is implemented over a year-long data segment, it requires processing time comparable to the data acquisition time of currently available computers. |
| format | Article |
| id | doaj-art-46bc68f1097c4e9fbb83544b3ace068c |
| institution | OA Journals |
| issn | 2218-1997 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
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| series | Universe |
| spelling | doaj-art-46bc68f1097c4e9fbb83544b3ace068c2025-08-20T02:21:54ZengMDPI AGUniverse2218-19972025-05-0111616810.3390/universe11060168A Novel Search Technique for Low-Frequency Periodic Gravitational WavesHarshit Raj0Sanjeev Dhurandhar1Massimo Tinto2Indian Institute of Science Education and Research, Pashan, Pune 411008, IndiaInter University Centre for Astronomy and Astrophysics, Ganeshkhind, Pune 411007, IndiaDivisão de Astrofísica, Instituto Nacional de Pesquisas Espaciais, S. J. Campos 12227-010, SP, BrazilWe quantify the advantages of a recently proposed data processing technique to search for continuous gravitational wave (GW) signals from isolated rotating asymmetric neutron stars in data measured by ground-based GW interferometers. This technique relies on the symmetry of the motion around the Sun of an Earth-bound gravitational wave interferometer. By multiplying the measured data time series with a half-year time-shifted copy of it, we obtain two advantages: (i) the main Doppler phase modulation of a monochromatic gravitational wave signal is exactly removed, and (ii) the signal in the product data are located at twice the GW signal frequency. The first significantly reduces the size of the signal’s parameter space over which a search is to be performed. The second is advantageous at low frequencies; we find that, with currently available computer processing speeds, this technique is capable of achieving sensitivity that is comparable to or even better than coherent and other possibly non-coherent methods. Further, since our proposed method is implemented over a year-long data segment, it requires processing time comparable to the data acquisition time of currently available computers.https://www.mdpi.com/2218-1997/11/6/168gravitational wavesgravitational wave interferometrydata analysismonochromatic gravitational wave signals |
| spellingShingle | Harshit Raj Sanjeev Dhurandhar Massimo Tinto A Novel Search Technique for Low-Frequency Periodic Gravitational Waves Universe gravitational waves gravitational wave interferometry data analysis monochromatic gravitational wave signals |
| title | A Novel Search Technique for Low-Frequency Periodic Gravitational Waves |
| title_full | A Novel Search Technique for Low-Frequency Periodic Gravitational Waves |
| title_fullStr | A Novel Search Technique for Low-Frequency Periodic Gravitational Waves |
| title_full_unstemmed | A Novel Search Technique for Low-Frequency Periodic Gravitational Waves |
| title_short | A Novel Search Technique for Low-Frequency Periodic Gravitational Waves |
| title_sort | novel search technique for low frequency periodic gravitational waves |
| topic | gravitational waves gravitational wave interferometry data analysis monochromatic gravitational wave signals |
| url | https://www.mdpi.com/2218-1997/11/6/168 |
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