Results from an Einstein@Home search for continuous gravitational waves from Cassiopeia A, Vela Jr. and G347.3
Jing Ming, Maria Alessandra Papa, Avneet Singh, Heinz-Bernd Eggenstein, Sylvia J. Zhu, Vladimir Dergachev, Yi-Ming Hu, Reinhard Prix, Bernd Machenschalk, Christian Beer, Oliver Behnke, Bruce Allen
(Submitted on 21 Mar 2019 (v1), last revised 22 Mar 2019 (this version, v2))
We report results of the most sensitive search to date for periodic gravitational waves from Cassiopeia A, Vela Jr. and G347.3 with frequency between 20 and 1500 Hz. The search was made possible by the computing power provided by the volunteers of the Einstein@Home project and improves on previous results by a factor of 2 across the entire frequency range for all targets. We find no significant signal candidate and set the most stringent upper limits to date on the amplitude of gravitational wave signals from the target population, corresponding to sensitivity depths between 54 [1/Hz‾‾‾√] and 83 [1/Hz‾‾‾√], depending on the target and the frequency range. At the frequency of best strain sensitivity, near 172 Hz, we set 90% confidence upper limits on the gravitational wave intrinsic amplitude of h90%0≈10−25, probing ellipticity values for Vela Jr. as low as 3×10−8, assuming a distance of 200 pc.
Subjects: General Relativity and Quantum Cosmology (gr-qc); High Energy Astrophysical Phenomena (astro-ph.HE)
Cite as: arXiv:1903.09119 [gr-qc] (or arXiv:1903.09119v2 [gr-qc] for this version)
Submission history
From: Jing Ming
[v1] Thu, 21 Mar 2019 17:26:57 UTC (7,678 KB)
[v2] Fri, 22 Mar 2019 11:50:52 UTC (7,678 KB)
