J/MNRAS/522/268ivo://CDS.VizieR/J/MNRAS/522/268doi:10.26093/cds/vizier.75220268CDSStiele H.Kong A.K.H.2024-08-22T20:17:11Z2023-04-21T06:22:55ZCDS support team

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

cds-question@unistra.frx-ray-binary-starsblack-holesx-ray-sourcesWe investigated the snapshots of five NICER observations of the black hole transient GX 339-4 when the source transited from the hard state into the soft state during its outburst in 2021. In this paper, we focused our study on the evolution of quasi-periodic oscillations (QPOs) and noise components using power-density spectra. In addition, we derived hardness ratios by comparing count rates above and below 2keV. The evolution from the hard to the soft state was a somewhat erratic process, showing several transitions between states that are dominated by top-flat noise and can show type-C QPOs; those that are dominated by red noise and can show type-B QPOs. From the parameters that we studied, we only found a strong correlation between the hardness ratio and the type of QPO observed. This implies that the appearance of type-B QPOs is related to a change in the accretion geometry of the system that also reflects in altered spectral properties. We also observed that the type-B QPO forms from or disintegrates into a broad peaked feature when the source comes out of or goes to the hard intermediate state, respectively. This implies some strong decoherence in the process that creates this feature.2023MNRAS.522..268Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/522/268CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/522/268https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/522/268http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/522/268https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/522/268https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/522/268http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/522/268GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapX-raydefaultJ/MNRAS/522/268/tablea1Parameters of the band limited noise and peaked noise components of the PDSrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSnap[1/53] Snapshot numbermeta.id;meta.mainintSnapL[a/b] Letter if a snapshot is split into two halvesmeta.code.multipcharObs[4/8] Last digit of NICER ObsID (413301010X)meta.id;obsintnuBLN1[0.0148/6.728] Characteristic frequency of first band limited noise componentHzem.freqfloate_nuBLN1[0.0031/1.9484] Lower error on nu_BLN1Hzstat.errorfloatE_nuBLN1[0.0035/8.0516] Upper error on nu_BLN1Hzstat.error;stat.maxfloatrmsBLN1[0.0063/0.0951] RMS of first BLN componentinstr.det.noisefloate_rmsBLN1[0.0002/0.0144] Lower error on rms_BLN1stat.errorfloatE_rmsBLN1[0.0002/0.0072] Upper error on rms_BLN1stat.error;stat.maxfloatnuBLN2[0.0035/0.0976]? Characteristic frequency of second band limited noise componentHzem.freqfloatnullablee_nuBLN2[0.0022/0.0446]? Lower error on nu_BLN2Hzstat.errorfloatnullableE_nuBLN2[0.0019/0.0912]? Upper error on nu_BLN2Hzstat.error;stat.maxfloatnullablermsBLN2[0.0073/0.0299]? RMS of second BLN componentinstr.det.noisefloatnullablee_rmsBLN2[0.0006/0.0045]? Lower error on rms_BLN2stat.errorfloatnullableE_rmsBLN2[0.0006/0.1264]? Upper error on rms_BLN2stat.error;stat.maxfloatnullablenuPN[0.2872/2.6181]? Centroid frequency of the peaked noise component (if present)Hzem.freqfloatnullablee_nuPN[0.0017/0.5183]? Lower error on nu_PNHzstat.errorfloatnullableE_nuPN[0.0137/0.2251]? Upper error on nu_PNHzstat.error;stat.maxfloatnullableDeltaPN[0.0004/2.1848]? Width of the PN componentHzsrc.var.pulsefloatnullablee_DeltaPN[0.0004/0.3114]? Lower error on delta_PNHzstat.errorfloatnullableE_DeltaPN[0.0227/0.8009]? Upper error on delta_PNHzstat.error;stat.maxfloatnullablermsPN[0.0047/0.0494]? RMS of the PN componentinstr.det.noisefloatnullablee_rmsPN[0/0.0067]? Lower error on rms_PNstat.errorfloatnullableE_rmsPN[0/0.9641]? Upper error on rms_PNstat.error;stat.maxfloatnullableQ[0.39/1575.63]? PN quality factor (G1)arith.factorfloatnullablesigma[1.6/18.56]? Detection significance of the PN componentstat.fit.goodnessfloatnullableJ/MNRAS/522/268/tablea2Parameters of the fundamental QPOsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSnap[1/53] Snapshot numbermeta.id;meta.mainintSnapL[a/b] Letter if a snapshot is split into two halvesmeta.code.multipcharObs[4/8] Last digit of NICER ObsID (413301010X)meta.id;obsintnuQPO[3.0586/6.3872] Centroid frequency of the quasi-periodic oscillationHzem.freqfloate_nuQPO[0.0058/0.3608]? Lower error on nu_QPOHzstat.errorfloatnullableE_nuQPO[0/0.2707]? Upper error on nu_QPOHzstat.error;stat.maxfloatnullableDeltaQPO[0/1.105] QPO half width at half maximumHzsrc.var.pulsefloate_DeltaQPO[0/0.3482]? Lower error on delta_QPOHzstat.errorfloatnullableE_DeltaQPO[0.0139/0.4238]? Upper error on delta_QPOHzstat.error;stat.maxfloatnullablermsQPO[0.0101/0.0318] QPO root mean squareinstr.det.noisefloate_rmsQPO[0.0006/0.003] Lower error on rms_QPOstat.errorfloatE_rmsQPO[0.0006/0.0034] Upper error on rms_QPOstat.error;stat.maxfloatQ[2.59/113.83] QPO quality factor (G1)arith.factorfloatsigma[1.94/14.33] Detection significance of the QPOstat.fit.goodnessfloatJ/MNRAS/522/268/tablea3Parameters of the upper harmonic QPOsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintrmsQPO[0.0106/0.0251] QPO root mean squareinstr.det.noisefloatQ[5.12/2593.17] QPO quality factor (G1)arith.factorfloatSnap[1/16] Snapshot numbermeta.id;meta.mainintObs[4/8] Last digit of NICER ObsID (413301010X)meta.id;obsintnuQPO[6.2603/11.331] Centroid frequency of the quasi-periodic oscillationHzem.freqfloate_nuQPO[0.0005/0.2324]? Lower error on nu_QPOHzstat.errorfloatnullableE_nuQPO[0.0006/0.3366]? Upper error on nu_QPOHzstat.error;stat.maxfloatnullableDeltaQPO[0.0003/0.7145] QPO half width at half maximumHzsrc.var.pulsefloate_DeltaQPO[0.0003/0.3038]? Lower error on delta_QPOHzstat.errorfloatnullableE_DeltaQPO[0.0018/0.5269]? Upper error on delta_QPOHzstat.error;stat.maxfloatnullablee_rmsQPO[0.0011/0.004] Lower error on rms_QPOstat.errorfloatE_rmsQPO[0.0011/0.0037] Upper error on rms_QPOstat.error;stat.maxfloatsigma[2.26/8.42] Detection significance of the QPOstat.fit.goodnessfloatJ/MNRAS/522/268/tablea4Parameters of additional featuresrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSnap[1/46] Snapshot numbermeta.id;meta.mainintObs[4/7] Last digit of NICER ObsID (413301010X)meta.id;obsintnuQPO[1.3589/9.6455] Centroid frequency of the quasi-periodic oscillationHzem.freqfloate_nuQPO[0.005/0.5178] Lower error on nu_QPOHzstat.errorfloatE_nuQPO[0/0.6419] Upper error on nu_QPOHzstat.error;stat.maxfloatDeltaQPO[0/1.1856] QPO half width at half maximumHzsrc.var.pulsefloate_DeltaQPO[0/0.509] Lower error on delta_QPOHzstat.errorfloatE_DeltaQPO[0.0311/2.7122] Upper error on delta_QPOHzstat.error;stat.maxfloatrmsQPO[0.0048/0.0278] QPO root mean squareinstr.det.noisefloate_rmsQPO[0.0007/0.0051] Lower error on rms_QPOstat.errorfloatE_rmsQPO[0.0008/0.9722] Upper error on rms_QPOstat.error;stat.maxfloatQ[1.26/44.26] QPO quality factor (G1)arith.factorfloatsigma[1.12/19.86] Detection significance of the QPOstat.fit.goodnessfloatSnapL[a/b] Letter if a snapshot is split into two halvesmeta.code.multipchar