We present a directed search for continuous gravitational wave (CW) signals emitted by spinning neutron stars located in the inner parsecs of the Galactic Center (GC). Compelling evidence for the presence of a numerous population of neutron stars has been reported in the literature, turning this region into a very interesting place to look for CWs. In this search, data from the full O3 LIGO-Virgo run in the detector frequency band [10,2000] Hz have been used. No significant detection was found and 95% confidence level upper limits on the signal strain amplitude were computed, over the full search band, with the deepest limit of about 7.6×10-26 at ≃142 Hz. These results are significantly more constraining than those reported in previous searches. We use these limits to put constraints on the fiducial neutron star ellipticity and r-mode amplitude. These limits can be also translated into constraints in the black hole mass-boson mass plane for a hypothetical population of boson clouds around spinning black holes located in the GC.

Search for continuous gravitational wave emission from the Milky Way center in O3 LIGO-Virgo data

Aiello L.;Barton M. A.;Bazzan M.;Bini S.;Boldrini M.;Bonavena L. D.;Bose S.;Bouffanais Y.;Bozzi A.;Branchesi M.;Brinkmann M.;Bucci F.;Cagnoli G.;Calloni E.;Canevarolo S.;Cao H.;Diaz J. C.;Chen D.;Cheung H. Y.;Chiarini G.;Ciani G.;Ciobanu A. A.;Ciolfi R.;Cipriano F.;Colpi M.;D'Angelo B.;D'Antonio S.;Davis D.;Diaz M. C.;Di Giorgio C.;Di Giovanni M.;Di Lieto A.;D'Onofrio L.;Durante O.;Fabrizi F.;Ferreira T. A.;Frasca S.;Gennai A.;George J.;Ghosh A.;Ghosh A.;Green R.;Guerra D.;Hanna C.;Hsu Y.;Jiang J.;Jung P.;Kang G.;Kao Y.;Korobko M.;Kumar P.;Kumar R.;Kumar R.;La Rosa I.;Li K. L.;Li P.;Liu K.;Liu X.;Lo T.;Lopez D.;Lorenzini M.;Majorana E.;Malik A.;Mangano V.;Mapelli M.;Martin R. M.;Martinez M.;Milano L.;Modafferi L. M.;Moreno C.;Mozzon S.;Munch J.;Nguyen C.;Nishizawa A.;Nocera F.;Pagano R.;Pal S.;Pascucci D.;Pathak M.;Paul S.;Perego A.;Perez C. J.;Perigois C.;Pham H.;Prodi G. A.;Punturo M.;Ramirez T. D.;Rapagnani P.;Renzini A.;Rinaldi S.;Robinet F.;Rocchi A.;Rodriguez S.;Romero A.;Saleem M.;Salemi F.;Sharma A.;Steer D. A.;Sturani R.;Tacca M.;Urban A. L.;Vajpeyi A.;Vardaro M.;Vecchio A.;Vetrano F.;Warner J.;Wright M.;Yamada T.;Zhang H.;Zhang R.;Zhang T.;
2022

Abstract

We present a directed search for continuous gravitational wave (CW) signals emitted by spinning neutron stars located in the inner parsecs of the Galactic Center (GC). Compelling evidence for the presence of a numerous population of neutron stars has been reported in the literature, turning this region into a very interesting place to look for CWs. In this search, data from the full O3 LIGO-Virgo run in the detector frequency band [10,2000] Hz have been used. No significant detection was found and 95% confidence level upper limits on the signal strain amplitude were computed, over the full search band, with the deepest limit of about 7.6×10-26 at ≃142 Hz. These results are significantly more constraining than those reported in previous searches. We use these limits to put constraints on the fiducial neutron star ellipticity and r-mode amplitude. These limits can be also translated into constraints in the black hole mass-boson mass plane for a hypothetical population of boson clouds around spinning black holes located in the GC.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/3460462
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