Papa, M.A.; Eggenstein, H.-B.; Walsh, S.; Di Palma, I.; Allen, B. et al.: Hierarchical follow-up of subthreshold candidates of an all-sky Einstein@Home search for continuous gravitational waves on LIGO sixth science run data. In: Physical Review D 94 (2016), Nr. 12, 122006. DOI: https://doi.org/10.1103/PhysRevD.94.122006
Zusammenfassung: | |
We report results of an all-sky search for periodic gravitational waves with frequency between 50 and 510 Hz from isolated compact objects, e.g., neutron stars. A new hierarchical multistage approach is taken, supported by the computing power of the Einstein@Home project, allowing us to probe more deeply than ever before. 16 million subthreshold candidates from the initial search [LIGO Scientific and Virgo Collaborations, Phys. Rev. D 94, 102002 (2016)] are followed up in four stages. None of those candidates is consistent with an isolated gravitational wave emitter, and 90% confidence level upper limits are placed on the amplitudes of continuous waves from the target population. Between 170.5 and 171 Hz, we set the most constraining 90% confidence upper limit on the strain amplitude h0 at 4.3×10-25, while at the high end of our frequency range, we achieve an upper limit of 7.6×10-25. These are the most constraining all-sky upper limits to date and constrain the ellipticity of rotating compact objects emitting at 300 Hz at a distance D to less than 6×10-7 [D100 pc]. | |
Lizenzbestimmungen: | CC BY 3.0 Unported |
Publikationstyp: | Article |
Publikationsstatus: | publishedVersion |
Erstveröffentlichung: | 2016 |
Die Publikation erscheint in Sammlung(en): | Fakultät für Mathematik und Physik |
Pos. | Land | Downloads | ||
---|---|---|---|---|
Anzahl | Proz. | |||
1 | Germany | 78 | 67,83% | |
2 | United States | 19 | 16,52% | |
3 | China | 10 | 8,70% | |
4 | Taiwan | 1 | 0,87% | |
5 | Russian Federation | 1 | 0,87% | |
6 | Serbia | 1 | 0,87% | |
7 | Romania | 1 | 0,87% | |
8 | Iran, Islamic Republic of | 1 | 0,87% | |
9 | France | 1 | 0,87% | |
10 | Switzerland | 1 | 0,87% | |
andere | 1 | 0,87% |
Hinweis
Zur Erhebung der Downloadstatistiken kommen entsprechend dem „COUNTER Code of Practice for e-Resources“ international anerkannte Regeln und Normen zur Anwendung. COUNTER ist eine internationale Non-Profit-Organisation, in der Bibliotheksverbände, Datenbankanbieter und Verlage gemeinsam an Standards zur Erhebung, Speicherung und Verarbeitung von Nutzungsdaten elektronischer Ressourcen arbeiten, welche so Objektivität und Vergleichbarkeit gewährleisten sollen. Es werden hierbei ausschließlich Zugriffe auf die entsprechenden Volltexte ausgewertet, keine Aufrufe der Website an sich.