Details
| Original language | English |
|---|---|
| Article number | 082008 |
| Number of pages | 9 |
| Journal | Physical Review D |
| Volume | 94 |
| Issue number | 8 |
| Publication status | Published - 28 Oct 2016 |
Abstract
We report the results of a directed search for continuous gravitational-wave emission in a broad frequency range (between 50 and 1000 Hz) from the central compact object of the supernova remnant Cassiopeia A (Cas A). The data come from the sixth science run of LIGO, and the search is performed on the volunteer distributed computing network Einstein@Home. We find no significant signal candidate and set the most constraining upper limits to date on the gravitational-wave emission from Cas A, which beat the indirect age-based upper limit across the entire search range. At 170 Hz (the most sensitive frequency range), we set 90% confidence upper limits on the gravitational-wave amplitude h0 of ∼2.9×10-25, roughly twice as constraining as the upper limits from previous searches on Cas A. The upper limits can also be expressed as constraints on the ellipticity of Cas A; with a few reasonable assumptions, we show that at gravitational-wave frequencies greater than 300 Hz we can exclude an ellipticity of 10-5.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Physics and Astronomy (miscellaneous)
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In: Physical Review D, Vol. 94, No. 8, 082008, 28.10.2016.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Einstein@Home search for continuous gravitational waves from Cassiopeia A
AU - Zhu, Sylvia J.
AU - Papa, Maria Alessandra
AU - Eggenstein, Heinz Bernd
AU - Prix, Reinhard
AU - Wette, Karl
AU - Allen, Bruce
AU - Bock, Oliver
AU - Keitel, David
AU - Krishnan, Badri
AU - MacHenschalk, Bernd
AU - Shaltev, Miroslav
AU - Siemens, Xavier
N1 - ACKNOWLEDGMENTS The authors thank the Einstein@Home volunteers who have supported this work by donating compute cycles of their machines, and acknowledge the support from the Max Planck Society and the Leibniz Universität Hannover. All the postprocessing computational work for this search was carried out on the ATLAS supercomputing cluster at the Max-Planck-Institut für Gravitationsphysik/Leibniz Universität Hannover. Maria Alessandra Papa, Bruce Allen, and Xavier Siemens gratefully acknowledge the support from NSF PHY Grant No. 1104902. We also thank the Continuous Wave Group of the LIGO Scientific Collaboration for useful discussions. This documented has been assigned LIGO Laboratory document number LIGO-P1600212.
PY - 2016/10/28
Y1 - 2016/10/28
N2 - We report the results of a directed search for continuous gravitational-wave emission in a broad frequency range (between 50 and 1000 Hz) from the central compact object of the supernova remnant Cassiopeia A (Cas A). The data come from the sixth science run of LIGO, and the search is performed on the volunteer distributed computing network Einstein@Home. We find no significant signal candidate and set the most constraining upper limits to date on the gravitational-wave emission from Cas A, which beat the indirect age-based upper limit across the entire search range. At 170 Hz (the most sensitive frequency range), we set 90% confidence upper limits on the gravitational-wave amplitude h0 of ∼2.9×10-25, roughly twice as constraining as the upper limits from previous searches on Cas A. The upper limits can also be expressed as constraints on the ellipticity of Cas A; with a few reasonable assumptions, we show that at gravitational-wave frequencies greater than 300 Hz we can exclude an ellipticity of 10-5.
AB - We report the results of a directed search for continuous gravitational-wave emission in a broad frequency range (between 50 and 1000 Hz) from the central compact object of the supernova remnant Cassiopeia A (Cas A). The data come from the sixth science run of LIGO, and the search is performed on the volunteer distributed computing network Einstein@Home. We find no significant signal candidate and set the most constraining upper limits to date on the gravitational-wave emission from Cas A, which beat the indirect age-based upper limit across the entire search range. At 170 Hz (the most sensitive frequency range), we set 90% confidence upper limits on the gravitational-wave amplitude h0 of ∼2.9×10-25, roughly twice as constraining as the upper limits from previous searches on Cas A. The upper limits can also be expressed as constraints on the ellipticity of Cas A; with a few reasonable assumptions, we show that at gravitational-wave frequencies greater than 300 Hz we can exclude an ellipticity of 10-5.
UR - http://www.scopus.com/inward/record.url?scp=84994351095&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.94.082008
DO - 10.1103/PhysRevD.94.082008
M3 - Article
AN - SCOPUS:84994351095
VL - 94
JO - Physical Review D
JF - Physical Review D
SN - 2470-0010
IS - 8
M1 - 082008
ER -