J/MNRAS/485/3834ivo://CDS.VizieR/J/MNRAS/485/3834doi:10.26093/cds/vizier.74853834CDSDe Ruiter I.Van Den Eijnden J.Ingram A.Uttley P.2024-08-19T20:17:36Z2023-10-10T15:23:48ZCDS support team

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

cds-question@unistra.frx-ray-binary-starsblack-holesWe perform a systematic study of the evolution of the waveform of black hole X-ray binary low-frequency QPOs, by measuring the phase difference between their fundamental and harmonic features. This phase difference has been studied previously for small number of QPO frequencies in individual sources. Here, we present a sample study spanning 14 sources and a wide range of QPO frequencies. With an automated pipeline, we systematically fit power spectra and calculate phase differences from archival Rossi X-ray Timing Explorer (RXTE) observations. We measure well-defined phase differences over a large range of QPO frequencies for most sources, demonstrating that a QPO for a given source and frequency has a persistent underlying waveform. This confirms the validity of recently developed spectral-timing methods performing phase-resolved spectroscopy of the QPO. Furthermore, we evaluate the phase difference as a function of QPO frequency. For Type-B QPOs, we find that the phase difference stays constant with frequency for most sources. We propose a simple jet precession model to explain these constant Type-B QPO phase differences. The phase difference of the Type-C QPO is not constant but systematically evolves with QPO frequency, with the resulting relation being similar for a number of high-inclination sources, but more variable for low-inclination sources. We discuss how the evolving phase difference can naturally arise in the framework of precession models for the Type-C QPO, by considering the contributions of a direct and reflected component to the QPO waveform.2019MNRAS.485.3834Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/485/3834CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/447/2059 : Black hole binaries quasi-periodic oscillationshttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/485/3834https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/485/3834http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/485/3834https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/485/3834https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/485/3834http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/485/3834GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/485/3834/sources (List of black hole X-ray binaries)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/485/3834/sources?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/485/3834/sources?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/485/3834/sources?GETtext/xml+votable180.050000true236.7844583-47.66950.0055555555555555566/28744 28805 28922 29416 29691 30622 32208 41809 42189 42196 42417 42533https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/485/3834?format=asciiX-raydefaultJ/MNRAS/485/3834/sourcesList of black hole X-ray binariesSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSourceSource namemeta.id;meta.maincharRAJ2000Simbad right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Simbad declination (J2000)pos.eq.dec;meta.mainA1Short name of the source in tablea1meta.idcharA2Short name of the source in tablea2meta.idcharJ/MNRAS/485/3834/tablea1Phase differences between QPO fundamental and harmonic signals for Type-B QPO analysisNameShort source namemeta.idchare_PhaseMean phase errorstat.error;time.phasedoubleStepFrequency stepstat.fit.paramfloatAHVariability amplitude of harmonic modesrc.var.amplitudedoubleFHOscillation frequency of harmonic modeHzem.freqdoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObsIdObservation Idmeta.id;obscharFWHMHFWHM of harmonic modespect.line.widthdoubleA0Variability amplitude of fundamental modesrc.var.amplitudedoubleF0Oscillation frequency of fundamental modeHzem.freqdoubleFWHM0FWHM of fundamental modespect.line.widthdoublePhaseMean phasetime.phasedoubleJ/MNRAS/485/3834/tablea2Phase differences between QPO fundamental and harmonic signals for Type-C QPO analysisrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameShort source namemeta.idcharObsIdObservation Idmeta.id;obscharA0Variability amplitude of fundamental modesrc.var.amplitudedoubleF0Oscillation frequency of fundamental modeHzem.freqdoubleFWHM0FWHM of fundamental modespect.line.widthdoubleAHVariability amplitude of harmonic modesrc.var.amplitudedoubleFHOscillation frequency of harmonic modeHzem.freqdoubleFWHMHFWHM of harmonic modespect.line.widthdoublePhaseMean phasetime.phasedoublee_PhaseMean phase errorstat.error;time.phasedoubleStepFrequency stepstat.fit.paramfloat