Details
| Original language | English |
|---|---|
| Article number | 122006 |
| Number of pages | 14 |
| Journal | Physical Review D |
| Volume | 94 |
| Issue number | 12 |
| Publication status | Published - 28 Dec 2016 |
Abstract
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].
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Physics and Astronomy (miscellaneous)
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In: Physical Review D, Vol. 94, No. 12, 122006, 28.12.2016.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Hierarchical follow-up of subthreshold candidates of an all-sky Einstein@Home search for continuous gravitational waves on LIGO sixth science run data
AU - Papa, Maria Alessandra
AU - Eggenstein, Heinz Bernd
AU - Walsh, Sinéad
AU - Di Palma, Irene
AU - Allen, Bruce
AU - Astone, Pia
AU - Bock, Oliver
AU - Creighton, Teviet D.
AU - Keitel, David
AU - Machenschalk, Bernd
AU - Prix, Reinhard
AU - Siemens, Xavier
AU - Singh, Avneet
AU - Zhu, Sylvia J.
AU - Schutz, Bernard F.
PY - 2016/12/28
Y1 - 2016/12/28
N2 - 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].
AB - 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].
UR - http://www.scopus.com/inward/record.url?scp=85022205190&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.94.122006
DO - 10.1103/PhysRevD.94.122006
M3 - Article
AN - SCOPUS:85022205190
VL - 94
JO - Physical Review D
JF - Physical Review D
SN - 2470-0010
IS - 12
M1 - 122006
ER -