Abbott, B. P.B. P.AbbottAbbott, R.R.AbbottAbbott, T. D.T. D.AbbottAbraham, S.S.AbrahamAcernese, F.F.AcerneseAckley, K.K.AckleyAdams, C.C.AdamsAdhikari, R. X.R. X.AdhikariAdya, V. B.V. B.AdyaAffeldt, C.C.AffeldtAgathos, M.M.AgathosAgatsuma, K.K.AgatsumaAggarwal, N.N.AggarwalAguiar, O. D.O. D.AguiarAiello, L.L.AielloAin, A.A.AinAjith, P.P.AjithAllen, G.G.AllenAllocca, A.A.AlloccaAloy, M. A.M. A.AloyAltin, P. A.P. A.AltinAmato, A.A.AmatoAnanyeva, A.A.AnanyevaAnderson, S. B.S. B.AndersonAnderson, W. G.W. G.AndersonAngelova, S. V.S. V.AngelovaAntier, S.S.AntierAppert, S.S.AppertArai, K.K.AraiAraya, M. C.M. C.ArayaAreeda, J. S.J. S.AreedaArene, M.M.AreneArnaud, N.N.ArnaudAscenzi, S.S.AscenziAshton, G.G.AshtonAston, S. M.S. M.AstonAstone, P.P.AstoneAubin, F.F.AubinAufmuth, P.P.AufmuthAultoneal, K.K.AultonealAustin, C.C.AustinAvendano, V.V.AvendanoAvila-Alvarez, A.A.Avila-AlvarezBabak, S.S.BabakBacon, P.P.BaconBadaracco, F.F.BadaraccoBader, M. K.M.M. K.M.BaderBae, S.S.BaeBailes, M.M.BailesBaker, P. T.P. T.BakerBaldaccini, F.F.BaldacciniBallardin, G.G.BallardinBallmer, S. W.S. W.BallmerBanagiri, S.S.BanagiriBarayoga, J. C.J. C.BarayogaBarclay, S. E.S. E.BarclayBarish, B. C.B. C.BarishBarker, D.D.BarkerBarkett, K.K.BarkettBarnum, S.S.BarnumBarone, F.F.BaroneBarr, B.B.BarrBarsotti, L.L.BarsottiBarsuglia, M.M.BarsugliaBarta, D.D.BartaBartlett, J.J.BartlettBartos, I.I.BartosBassiri, R.R.BassiriBasti, A.A.BastiBawaj, M.M.BawajBayley, J. C.J. C.BayleyBazzan, M.M.BazzanB�csy, B.B.B�csyBejger, M.M.BejgerBelahcene, I.I.BelahceneBell, A. S.A. S.BellBeniwal, D.D.BeniwalBerger, B. K.B. K.BergerBergmann, G.G.BergmannBernuzzi, S.S.BernuzziBero, J. J.J. J.BeroBerry, C. P.L.C. P.L.BerryBersanetti, D.D.BersanettiBertolini, A.A.BertoliniBetzwieser, J.J.BetzwieserBhandare, R.R.BhandareBidler, J.J.BidlerBilenko, I. A.I. A.BilenkoBilgili, S. A.S. A.BilgiliBillingsley, G.G.BillingsleyBirch, J.J.BirchBirney, R.R.BirneyBirnholtz, O.O.BirnholtzBiscans, S.S.BiscansBiscoveanu, S.S.BiscoveanuBisht, A.A.BishtBitossi, M.M.BitossiBizouard, M. A.M. A.BizouardBlackburn, J. K.J. K.BlackburnBlair, C. D.C. D.Blair2025-08-312025-08-312019-07-0110.3847/1538-4357/ab20cb2-s2.0-85070731082http://repository.iitgn.ac.in/handle/IITG2025/23240We present a search for gravitational waves from 222 pulsars with rotation frequencies 10 Hz. We use advanced LIGO data from its first and second observing runs spanning 2015-2017, which provides the highest-sensitivity gravitational-wave data so far obtained. In this search we target emission from both the l = m = 2 mass quadrupole mode, with a frequency at twice that of the pulsar's rotation, and the l = 2, m = 1 mode, with a frequency at the pulsar rotation frequency. The search finds no evidence for gravitational-wave emission from any pulsar at either frequency. For the l = m = 2 mode search, we provide updated upper limits on the gravitational-wave amplitude, mass quadrupole moment, and fiducial ellipticity for 167 pulsars, and the first such limits for a further 55. For 20 young pulsars these results give limits that are below those inferred from the pulsars' spin-down. For the Crab and Vela pulsars our results constrain gravitational-wave emission to account for less than 0.017% and 0.18% of the spin-down luminosity, respectively. For the recycled millisecond pulsar J0711-6830 our limits are only a factor of 1.3 above the spin-down limit, assuming the canonical value of 10³⁸ kg m² for the star's moment of inertia, and imply a gravitational-wave-derived upper limit on the star's ellipticity of 1.2 × 10^-8. We also place new limits on the emission amplitude at the rotation frequency of the pulsars.trueGravitational Waves | Pulsars: General | Stars: Neutron Supporting Material: Machine-Readable TableArticlehttps://iopscience.iop.org/article/10.3847/1538-4357/ab20cb/pdf153843571 July 20198710arJournal86