J/MNRAS/466/3309ivo://CDS.VizieR/J/MNRAS/466/3309doi:10.26093/cds/vizier.74663309CDSRani P.Stalin C.S.Rakshit S.2024-08-17T20:17:55Z2019-12-06T14:34:16ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleix-ray-sourcesWe present results of a systematic study of flux variability on hourly time-scales in a large sample of active galactic nuclei (AGN) in the 3-79keV band using data from Nuclear Spectroscopic Telescope Array. Our sample consists of four BL Lac objects (BL Lacs), three flat spectrum radio quasars (FSRQs) 24 Seyfert 1, 42 Seyfert 2 and eight narrow line Seyfert 1 (NLSy1) galaxies. We find that in the 3-79keV band, about 65 per cent of the sources in our sample show significant variations on hourly time-scales. Using the Mann-Whitney U-test and the Kolmogorov-Smirnov test, we find no difference in the variability behaviour between Seyfert 1 and 2 galaxies. The blazar sources (FSRQs and BL Lacs) in our sample are more variable than Seyfert galaxies that include Seyfert 1 and Seyfert 2 in the soft (3-10keV), hard (10-79keV) and total (3-79keV) bands. NLSy1 galaxies show the highest duty cycle of variability (87 per cent), followed by BL Lacs (82 per cent), Seyfert galaxies (56 per cent) and FSRQs (23 per cent). We obtained flux doubling/halving time in the hard X-ray band less than 10 min in 11 sources. The flux variations between the hard and soft bands in all the sources in our sample are consistent with zero lag.2017MNRAS.466.3309Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/466/3309CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/466/3309https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/466/3309http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/466/3309https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/466/3309https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/466/3309http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/466/3309GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/466/3309/table1 (Information on the sources studied for flux variability)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/466/3309/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/466/3309/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/466/3309/table1?GETtext/xml+votable180.050000true1.5812520.2030560.0055555555555555566/893 2251 4540 5423 7132 7424 7642 7713 8922 9305 9612 10454 10847 10912 10927 11101 11206 11388 11416 13927 14653 14744 14777 14858 15481 16301 17525 17754 17795 19883 21016 21036 21450 21785 21996 22890 22975 23171 23323 24123 24228 25907 26071 26131 26292 26393 27382 27477 27486 28518 28535 29398 30140 32630 34531 35447 35608 36786 38653 39118 39295 39717 39778 39977 40818 41014 41586 41929 41982 42016 43806 43877 44660 45222 45735 45883 46399 47014 47016 47245 48394https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/466/3309?format=asciiX-raydefaultJ/MNRAS/466/3309/table1Information on the sources studied for flux variabilitySimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameNamemeta.id;meta.maincharprimaryRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainn_Vmag[*] Note on Vmag (1)meta.notecharVmag? V magnitudemagphot.mag;em.opt.VfloatnullablezRedshiftsrc.redshiftfloatTypeTypesrc.classcharFvarindicates characteristics of flux variations in Fvar tablemeta.ref.urlcharJ/MNRAS/466/3309/FvarCharacteristics of flux variations (tables 2-6)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameNamemeta.id;meta.maincharTypeTypesrc.classcharObsIDObservation IDmeta.id;obsObs.dateObservation datetime.epoch;obsnullableTexpExposure timestime.duration;obs.exposureintFvarSFlux variation in soft band, 3-10keVarith.rate;phot.flux;em.X-ray.softfloate_FvarSrms uncertainty on FvarSstat.errorfloatFvarHFlux variation in hard band, 10-79keVarith.rate;phot.flux;em.X-ray.hardfloate_FvarHrms uncertainty on FvarHstat.errorfloatFvarTFlux variation in total band, 3-79keVarith.rate;phot.flux;em.X-rayfloate_FvarTrms uncertainty on FvarTstat.errorfloat