J/ApJ/804/114ivo://CDS.VizieR/J/ApJ/804/114doi:10.26093/cds/vizier.18040114CDSBerry C.P.L.Mandel I.Middleton H.Singer L.P.Urban A.L.Vecchio A.,Vitale S.Cannon K.Farr B.Farr W.M.Graff P.B.Hanna C.,Haster C.-J.Mohapatra S.Pankow C.Price L.R.Sidery T.Veitch J.2017-06-22T14:28:22Z2015-09-23T08:45:29ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frinterferometryAdvanced ground-based gravitational-wave (GW) detectors begin operation imminently. Their intended goal is not only to make the first direct detection of GWs, but also to make inferences about the source systems. Binary neutron-star mergers are among the most promising sources. We investigate the performance of the parameter-estimation (PE) pipeline that will be used during the first observing run of the Advanced Laser Interferometer Gravitational-wave Observatory (aLIGO) in 2015: we concentrate on the ability to reconstruct the source location on the sky, but also consider the ability to measure masses and the distance. Accurate, rapid sky localization is necessary to alert electromagnetic (EM) observatories so that they can perform follow-up searches for counterpart transient events. We consider PE accuracy in the presence of non-stationary, non-Gaussian noise. We find that the character of the noise makes negligible difference to the PE performance at a given signal-to-noise ratio. The source luminosity distance can only be poorly constrained, since the median 90% (50%) credible interval scaled with respect to the true distance is 0.85 (0.38). However, the chirp mass is well measured. Our chirp-mass estimates are subject to systematic error because we used gravitational-waveform templates without component spin to carry out inference on signals with moderate spins, but the total error is typically less than 10^-3^M_{sun}_. The median 90% (50%) credible region for sky localization is ~600deg^2^ (~150deg^2^), with 3% (30%) of detected events localized within 100deg^2^. Early aLIGO, with only two detectors, will have a sky-localization accuracy for binary neutron stars of hundreds of square degrees; this makes EM follow-up challenging, but not impossible.2015ApJ...804..114Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/804/114CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/760/12 : LIGO/Virgo gravitational-wave (GW) bursts (Abadie+, 212)J/ApJ/713/671 : Gravitational waves from pulsars (Abbott+, 2010)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/804/114https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/804/114http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/804/114https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/804/114https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/804/114http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/804/114GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/804/114/sample (Simulated binary neutron-star (BNS) signals of detected events for 2015 scenario using recolored noise (table C1), detections and sky-localization areas (table C2) and accuracy estimations (table C3))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/804/114/sample?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/804/114/sample?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/804/114/sample?GETtext/xml+votable180.050000true99.9-30.80.0055555555555555566/222 441 470 762 900 930 954 1277 1397 1664 1691 1704 1844 1866 1883 2238 2243 2366 2528 2590 2960 3012 3030 3133 3190 3203 3367 3397 3450 3473 3527 3554 3790 3979 3997 4014 4170 4175 4831 4871 5004 5016 5043 5132 5280 5332 5447 5579 5892 6234 6353 7108 7197 7322 7373 7481 7534 7604 7686 7807 7856 8083 8084 8371 8400 8781 8925 8995 9029 9202 9229 9284 9433 9850 9940 9958 10195 10228 10230 10538 10550 10856 10907 11132 11156 11218 11232 11601 12413 12449 12734 12753 12835 12858 12861 12862 12873 13460 13514 13744 14053 14099 14184 14271 14305 14318 14550 14663 14887 14908 14978 15380 15382 15432 15449 15609 15758 15815 15836 15869 15938 16008 16036 16296 16315 16446 16674 16843 16881 16957 17103 17152 17467 17480 18007 18320 18390 18407 18643 18832 18853 19357 19640 19739 19950 20110 20151 20239 20260 20334 20407 20468 20564 20632 20883 21025 21061 21219 21574 21617 21720 21746 21762 21932 23032 23037 23415 23881 24006 24165 24188 24196 24409 24867 24970 25221 25223 25473 25689 25740 26033 26236 26283 26426 27063 27135 27170 27184 27313 27369 27425 27683 27718 27793 28074 28341 28580 29010 29023 29322 29331 29438 29513 29661 29841 30339 30645 30686 30803 31178 31268 31581 31954 31986 32741 32769 32793 32800 33127 33220 33275 33296 33416 33532 33547 33755 33794 33996 34115 34200 34860 35098 35180 35222 35528 35529 36049 36384 36510 36953 36956 37192 37341 37433 37450 37924 38009 38071 38082 38168 38216 38266 38299 38353 38399 38449 38453 38556 38651 38673 38780 38873 39217 39241 39379 39472 39496 39573 39576 39619 39897 40157 40185 40333 40537 41008 41116 41235 41369 41419 41420 41719 41781 41797 41820 41925 41986 42509 42641 42700 42730 42819 43048 43053 43102 43136 43165 43282 43566 43620 43821 43845 43966 44114 44145 44539 44568 44753 44832 44898 44946 45235 45480 45694 46107 46124 47008 47090 47100 47110 47187 47208 47209 47406 47631 47745 48437 48503 48645 48679 48759 48767 48929https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/804/114?format=asciiOpticaldefaultJ/ApJ/804/114/sampleSimulated binary neutron-star (BNS) signals of detected events for 2015 scenario using recolored noise (table C1), detections and sky-localization areas (table C2) and accuracy estimations (table C3)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEvID[4532/14218] Event detection ID (coinc-event-id) (G1)meta.id;meta.mainintSimID[138/48517] Simulation ID (simulation-id) (G2)meta.idintMJDMJD of simulated signal (1)dstat.snr;time.epochdoubleRAJ2000Right ascension; decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination; decimal degrees (J2000)degpos.eq.dec;meta.mainInc[4/178] Binary orbital inclination angledegsrc.orbital.inclinationintPolA[0/360] Polarization angle (2)degpos.posAng;phys.polarizationintPhase[0/360] Orbital phase at coalescence (coa-phase)degtime.phaseintDist[2/121] DistanceMpcpos.distance;pos.heliocentricintM1[1.2/1.6] Mass of binary component 1solMassphys.massfloatM2[1.2/1.6] Mass of binary component 2solMassphys.massfloatspin1x[-0.05/0.05] Spin of binary component 1, x-axisstat.paramfloatspin1y[-0.05/0.05] Spin of binary component 1, y-axisstat.paramfloatspin1z[-0.05/0.05] Spin of binary component 1, z-axisstat.paramfloatspin2x[-0.05/0.05] Spin of binary component 2, x-axisstat.paramfloatspin2y[-0.05/0.05] Spin of binary component 2, y-axisstat.paramfloatspin2z[-0.05/0.05] Spin of binary component 2, z-axisstat.paramfloatDet[HL] Detector network (network) (1)meta.id;instrcharSNR[10/100] Network SNR (snr-net) (2)stat.snrfloatSNR.H[5/62] SNR in Handford detector (snr-H) (2)stat.snrfloatSNR.L[5/79] SNR in Livingston detector (snr-L) (2)stat.snrfloatM1r[1.2/2.1] Recovered mass 1solMassphys.massfloatM2r[0.9/1.6] Recovered mass 2solMassphys.massfloatAra.5The 50% area, BAYESTAR (rapid-area50) (3)deg**2phys.angSizefloatAra.9The 90% area, BAYESTAR (rapid-area90) (3)deg**2phys.angSizefloatAra[0.06/2727] Searched area, BAYESTAR (rapid-searched) (3)deg**2phys.angSizefloatApe.5The 50% area, LALINFERENCE (pe-area50) (4)deg**2phys.angSizefloatApe.9The 90% area, LALINFERENCE (pe-area90) (4)deg**2phys.angSizefloatApe[0.07/9810] Searched area, LALINFERENCE (pe-searched) (4)deg**2phys.angSizefloatFAR[2e-14/4e-10] False alarm rates**-1stat.fit.goodnessdoubleM[1/1.4] Injected chirp mass (chirp-mass-true)solMassphys.massdoubleD[2/125] Injected distance (distance-true)Mpcpos.distancefloat<M>[1/1.4] Chirp-mass posterior mean (chirp-mass-mean) (1)solMassphys.massdoubleM.5Chirp-mass 50% credible interval (chirp-mass50) (1)solMassphys.massdoubleM.9Chirp-mass 90% credible interval (chirp-mass90) (1)solMassphys.massdouble<D>[6/96] Distance posterior mean (distance-mean) (1)Mpcpos.distance;stat.meanfloatD.5Distance 50% credible interval (distance50) (1)Mpcpos.distance;time.interval;pos.heliocentricfloatD.9Distance 90% credible interval (distance90) (1)Mpcpos.distance;time.interval;pos.heliocentricfloatJ/ApJ/804/114/tablec4Parameter-estimation accuracies for 2015 scenario using Gaussian noiserecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEvID[1087/29304] Detection ID (coinc-event-id) (G1)meta.id;meta.mainintSimID[32/48653] Simulation ID (simulation-id) (G2)meta.idintM[1/1.4] Injected chirp mass (chirp-mass-true)solMassphys.massdoubleD[2/125] Injected distance (distance-true)Mpcpos.distancefloat<M>[1/1.4] Chirp-mass posterior mean (chirp-mass-mean) (1)solMassphys.massdoubleM.5Chirp-mass 50% credible interval (chirp-mass50) (1)solMassphys.massdoubleM.9Chirp-mass 90% credible interval (chirp-mass90) (1)solMassphys.massdouble<D>[6/96] Distance posterior mean (distance-mean) (1)Mpcpos.distance;stat.meanfloatD.5Distance 50% credible interval (distance50) (1)Mpcpos.distance;time.interval;pos.heliocentricfloatD.9Distance 90% credible interval (distance90) (1)Mpcpos.distance;time.interval;pos.heliocentricfloat