Radio Loud and Quiet QSOs X-ray propertiesJ/other/JHEAP/36ivo://CDS.VizieR/J/other/JHEAP/36.152CDSShabana F.Siemiginowskab A.Suleimanb R.M.El-Nawawya M.S.Alia A.2024-09-24T13:33:20Z2024-07-05T12:02:38ZCDS support teamCDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, Francecds-question@unistra.frquasarsredshiftedx-ray-sourcesWe performed a study of high redshift (z>2) quasars, looking for the main differences between Radio Loud Quasars (RLQ) and Radio Quiet Quasars (RQQ) in the X-ray band. Our sample of 472 RQQ and 81 RLQ was selected by cross-matching the SDSS DR7 quasars catalog with the Chandra Source Catalog. We computed the X-ray luminosity for the two samples and confirmed the X-ray luminosity excess of RLQ over RQQ. We fit the X-ray spectra assuming the absorbed power law model and obtained the photon index (GAMMA) values for all the sources in the sample. We excluded quasars with a low number of counts (<10) and large uncertainty on the best-fit photon index (GAMMA_err_>1), and obtained the mean values of GAMMA_RLQ_=1.70^+0.36^_-0.33_ and GAMMA_RQQ_=2.19^+0.46^_-0.44_ for the RLQ and RQQ samples, respectively, showing that the RLQ have flatter (harder) X-ray spectra than RQQ. The Kuiper-two test confirms this result with the significant difference between the RLQ and RQQ photon index distributions (Dk=0.37 and P-value=10^-6^). We also evaluated the hardness ratio distributions and confirmed that the spectra of RLQ are flatter than the spectra of the RQQ. The RLQ's hard-to-soft ratio distribution is skewed towards the hard X-ray band, while the RQQ is towards the soft X-ray band. The hard-to-medium and medium-to-soft ratios show no difference.2022JHEAp..36..152Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/JHEAP/36.152CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIX/57 : The Chandra Source Catalog (CSC), Release 2.0 (Evans+, 2019)J/ApJS/194/45 : QSO properties from SDSS-DR7 (Shen+, 2011)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/JHEAP/36.152https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/JHEAP/36.152http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/JHEAP/36.152https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/other/JHEAP/36.152https://vizier.iucaa.in/viz-bin/votable?-source=J/other/JHEAP/36.152http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/other/JHEAP/36.152GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/other/JHEAP/36.152/riq_18 (Radio intermediate quasars sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/JHEAP/36.152/riq_18?https://vizier.iucaa.in/viz-bin/conesearch/J/other/JHEAP/36.152/riq_18?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/JHEAP/36.152/riq_18?GETtext/xml+votable180.050000true164.4844055175845.931404113770.005555555555555556Cone search capability for table J/other/JHEAP/36.152/rlq_81 (Radio loud quasars sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/JHEAP/36.152/rlq_81?https://vizier.iucaa.in/viz-bin/conesearch/J/other/JHEAP/36.152/rlq_81?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/JHEAP/36.152/rlq_81?GETtext/xml+votable180.050000true11.55641.0737420.005555555555555556Cone search capability for table J/other/JHEAP/36.152/rqq_472 (Radio quiet quasars sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/JHEAP/36.152/rqq_472?https://vizier.iucaa.in/viz-bin/conesearch/J/other/JHEAP/36.152/rqq_472?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/JHEAP/36.152/rqq_472?GETtext/xml+votable180.050000true1.74704504013-0.29469600320.005555555555555556Cone search capability for table J/other/JHEAP/36.152/rlq_csc2 (Radio loud quasars CSC2 sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/JHEAP/36.152/rlq_csc2?https://vizier.iucaa.in/viz-bin/conesearch/J/other/JHEAP/36.152/rlq_csc2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/JHEAP/36.152/rlq_csc2?GETtext/xml+votable180.050000true123.2660089877325.703023260850.005555555555555556Cone search capability for table J/other/JHEAP/36.152/rqq_csc2 (Radio quiet quasars CSC2 sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/JHEAP/36.152/rqq_csc2?https://vizier.iucaa.in/viz-bin/conesearch/J/other/JHEAP/36.152/rqq_csc2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/JHEAP/36.152/rqq_csc2?GETtext/xml+votable180.050000true148.9504930334141.16553895560.0055555555555555565/6814 6/4124-4125 4150-4151 4215-4216 4229 4285 4298 4410 4448 4512 4613 4615 4649 4672 4686 4708 4720 4759 4805 4808 4835 4838 4855 4867 4946 4954 4964 5007 5016 5046 5048 5051 5059 5061 5082 5085 5124 5171 5229 5299 5305-5306 5349 5429 5438 5454 5491 5504 5518 5523 5528 5569 5628 5648 5675 5678 5692 5721 5723 5731 5781 5842-5843 5848 5865 5923 5928 5930 5942 5956 5967 5999 6071 6075 6077 6090 6100 6111-6112 6236 6551-6552 6559 6579 6581 6618 6645 6647 6652 7220 7227 7243 7260 7267 7311-7312 7379 7456 7459 7478 7500 8193 8195 8203 8268 8344 8348 8420 8520 8526 8627 8659 8740 8845 8895 8921 8972 8985 9052 9069 9095 9144 9146-9147 9150-9151 9185 9231 9314 9343 9401 9428 9466 9476 9506 9508 9512 9618 9632 9732 9742 9747 9765 9776 9806 9821 9828 9855 9878 9938 9966 9997 10016 10074 10122 10144 10153 10213 10220 10312 10318 10364-10365 10371 10465 10512-10513 10515-10516 10518-10519 10527 10574 10601 10609 10618 10650 10704 10706 10734 10743 10894 10898 10911-10912 10968 10991-10992 11017 11030 11042 11073 11080 11104 11120 11126 11149 11191 11195 11214 11222 11249 11252-11253 11259 11264 11299 11321 11337 11339 11347 11361 11365 11368 11418 11424 11428 11430 11433-11434 11455 11489 11596 11832 11908 17239 17307 17469 17497 17510 17512 17516 17752 17754 17763 17767 17772 17805-17806 17813 17815 17829 17840 17997 18001 18003 18007 18009 18011 18022 18024 18032 18071 18076 18086 18088 18098 18521 18544 18780 18789-18791 18796 18800 18837 18852 19023 19033 19036 19056 19087 19089 19456 19458 23182 23205 23207 23210 25597 25853 25938 25950 25977 26005 26037 26056 26103 26175 26204 26209 26215 26217 26264 26276-26277 26280 26305 26318 26330 26389 26427 26452-26453 26542 26554 26596 26962 26975 27004 27046 27053 27127 27237 27239 27247 27314 27341 27365 27391 27427 27441 27509 27520 27537 27552 27578 27591 27617 27652 27691 27741-27743 27760 27763 27767 27846 27853 27859 27868 27889 27913 27931 27936 27945 27954 27976 28022 28032 28054 28075 28123 28126 28138 28142 28147 28154 28174 28184 28221 28237 28244 28293 28300 28330 28370 28376-28377 28426 28482 28495 28511 28535 28539 28548 28592 28611 28622 28632 28648 31331 31419 31622 31625 36785 36792 36863 45044https://cdsarc.cds.unistra.fr/viz-bin/moc/J/other/JHEAP/36.152?format=asciiX-raydefault
J/other/JHEAP/36.152/riq_18Radio intermediate quasars samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSimbadSimbad column added by the CDSmeta.ref.urlcharSDSSSDSS name, HHMMSS.ss+DDMMSS.s (SDSS_NAME)meta.idcharRAJ2000Right ascension (J2000) (RA_1)degpos.eq.ra;meta.mainDEJ2000Delcination (J2000) (DEC_1)degpos.eq.dec;meta.mainCXCCXC name (2CXO JHHMMSS.s+DDMMSS) (CXC_NAME)meta.id;meta.maincharzQuasar redshift from DR7 catalog (Redshift)src.redshiftdoubleRRadio loudness (Radio_Loudness) (G1)phot.flux;arith.ratiodoubleObsIDObservation identifier (Obs_ID)meta.id;obs.param;obsintlogLXX-ray luminosity (Log (X-ray_Lum)) (G2)log(1e-07W)phys.luminosity;em.X-raydoubleblogLXX-ray luminosity lower limit (Log (X-ray_Lum_lolim)) (G3)log(1e-07W)phys.luminosity;em.X-raydoubleBlogLXX-ray luminosity upper limit (Log (X-ray_Lum_hilim)) (G4)log(1e-07W)phys.luminosity;em.X-raydoublePI? Photon index (Photon_Index) (G5)spect.indexdoublenullableB_PI? Photon index upper limit (Photon_Index_max) (G6)meta.code;spect.index;stat.maxdoublenullableb_PI[]? Photon index lower limit (Photon_Index_min) (G7)meta.code;spect.index;stat.mindoublenullableHR-H/MHard/medium hardness ratio (Hard_H/M) (G8)phot.flux;arith.ratiodoubleb_HR-H/MHard/medium hardness ratio 68% lower confidence limit (Hard_H/M_lolim)phot.flux;arith.ratiodoubleB_HR-H/MHard/medium hardness ratio 68% upper confidence limit (Hard_H/M_hilim)phot.flux;arith.ratiodoubleHR-H/SHard/soft hardness ratio (Hard_H/S) (G9)phot.flux;arith.ratiodoubleb_HR-H/SHard/soft hardness ratio 68% lower confidence limit (Hard_H/S_lolim)phot.flux;arith.ratiodoubleB_HR-H/SHard/soft hardness ratio 68% upper confidence limit (Hard_H/S_hilim)phot.flux;arith.ratiodoubleHR-M/SMedium/Soft hardness ratio (Hard_M/S) (G10)phot.flux;arith.ratiodoubleb_HR-M/SMedium/Soft hardness ratio 68% lower confidence limit (Hard_M/S_lolim)phot.flux;arith.ratiodoubleB_HR-M/SMedium/Soft hardness ratio 68% upper confidence limit (hard_ms_hilim)phot.flux;arith.ratiodouble
J/other/JHEAP/36.152/rlq_81Radio loud quasars sampleBHR-H/MHard/medium hardness ratio 68% upper confidence limit (Hard_H/M_lolim)stat.errordoubleSimbadSimbad column added by the CDSmeta.ref.urlcharbHR-H/MHard/medium hardness ratio 68% lower confidence limit (Hard_H/M_hilim)stat.errordoubleHR-M/SHard/Medium hardness ratio (Hard_M/S) (G10)phot.flux;arith.ratiodoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSDSSSDSS name, HHMMSS.ss+DDMMSS.s (SDSS_NAME)meta.idcharCXCCXC name (2CXO JHHMMSS.s+DDMMSS) (CXC_NAME)meta.id;meta.maincharzQuasars redshift from DR7 catalog (Redshift)src.redshiftfloatRAJ2000Right ascension (J2000) (RA)degpos.eq.ra;meta.mainDEJ2000Delcination (J2000) (DEC)degpos.eq.dec;meta.mainRRadio loudness (Radio_Loudness) (G1)phot.flux;arith.ratiodoubleHR-H/MHard/medium hardness ratio (Hard_H/M) (G8)phot.flux;arith.ratiodoubleB_HR-M/SHard/Medium hardness ratio 68% upper confidence limit (Hard_M/S_hilim)phot.flux;arith.ratiodoubleb_HR-M/SHard/Medium hardness ratio 68% lower confidence limit (Hard_M/S_lolim)phot.flux;arith.ratiodoubleHR-H/SHard/soft hardness ratio (Hard_H/S) (G9)phot.flux;arith.ratiodoubleBHR-H/SHard/soft hardness ratio 68% upper confidence limit (Hard_H/S_hilim)stat.errordoublebHR-H/SHard/soft hardness ratio 68% lower confidence limit (Hard_H/S_lolim)stat.errordoubleObsIDObservation identifier (Obs_ID)meta.id;obs.param;obscharPI? Photon index (Photon_Index) (G5)spect.indexdoublenullableB_PI? Photon index upper limit (Photon_Index_max)meta.code;spect.index;stat.maxdoublenullableb_PI? Photon index lower limit (Photon_Index_min)meta.code;spect.index;stat.mindoublenullablelogLXX-ray luminosity (Log (X-ray_Lum)) (G2)log(1e-07W)phys.luminosity;em.X-raydoubleblogLXX-ray luminosity lower limit (Log (X-ray_Lum_lolim))log(1e-07W)phys.luminosity;em.X-raydoubleBlogLXX-ray luminosity upper limit (Log (X-ray_Lum_hilim))log(1e-07W)phys.luminosity;em.X-raydouble
J/other/JHEAP/36.152/rqq_472Radio quiet quasars sampleB_HR-M/S[]? Medium/Soft hardness ratio 68% upper confidence limit (hard_ms_hilim)phot.flux;arith.ratiodoublenullablePI? Photon index (Photon_Index) (G5)spect.indexdoublenullableb_PI? Photon index lower limit (Photon_Index_min)meta.code;spect.index;stat.mindoublenullableB_PI? Photon index upper limit (Photon_Index_max)meta.code;spect.index;stat.maxdoublenullablelogLX? X-ray luminosity (Log (X-ray_Lum)) (G2)log(1e-07W)phys.luminosity;em.X-raydoublenullableb_logLX? X-ray luminosity lower value (Log (X-ray_Lum_lolim))log(1e-07W)phys.luminosity;stat.mindoublenullableB_logLX? X-ray luminosity upper value (Log (X-ray_Lum_hilim))log(1e-07W)phys.luminosity;stat.maxdoublenullableSimbadSimbad column added by the CDSmeta.ref.urlcharB_HR-H/S[]? Hard/soft hardness ratio 68% upper confidence limit (hard_hs_hilim)phot.flux;arith.ratiodoublenullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSDSSSDSS name, HHMMSS.ss+DDMMSS.s (SDSS_NAME)meta.idcharRAJ2000Right ascension (J2000) (RA)degpos.eq.ra;meta.mainDEJ2000Delcination (J2000) (DEC)degpos.eq.dec;meta.mainzQuasars redshift from DR7 catalog (Redshift)src.redshiftdoubleCXCCXC name (2CXO JHHMMSS.s+DDMMSS) (NAME)meta.id;meta.maincharObsID? Observation identifier (Obs_ID)meta.id;obs.param;obsintnullableHR-H/M? Hard/medium hardness ratio (hard_hm) (G8)phot.flux;arith.ratiodoublenullableb_HR-H/M[]? Hard/medium hardness ratio 68% lower confidence limit (hard_hm_lolim)phot.flux;arith.ratiodoublenullableB_HR-H/M[]? Hard/medium hardness ratio 68% upper confidence limit (hard_hm_hilim)phot.flux;arith.ratiodoublenullableHR-H/S? Hard/soft hardness ratio (hard_hs) (G9)phot.flux;arith.ratiodoublenullableb_HR-H/S[]? Hard/soft hardness ratio 68% lower confidence limit (hard_hs_lolim)phot.flux;arith.ratiodoublenullableHR-M/S? Medium/Soft hardness ratio (hard_ms) (G10)phot.flux;arith.ratiodoublenullableb_HR-M/S[]? Medium/Soft hardness ratio 68% lower confidence limit (hard_ms_lolim)phot.flux;arith.ratiodoublenullable
J/other/JHEAP/36.152/rlq_csc2Radio loud quasars CSC2 samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSpNameSpectral file name (SPECTRAL_NAME)meta.id;meta.filecharPIPhoton index (PHOTON_INDEX)spect.indexdoubleE_PI[] Photon index error upper value (PHOTON_INDEX_MIN)stat.error;stat.maxdoublee_PIPhoton index error lower value (PHOTON_INDEX_MAX)stat.errordoublezQuasars redshift from CSC2 catalog (REDSHIFT)src.redshiftdoublegammaCSC2CSC2 photon index (Gamma_CSC2)spect.indexdoubleb_gammaCSC2CSC2 photon index error 68% lower confidence limit (Gamma_lolim_CSC2)spect.indexfloatB_gammaCSC2CSC2 photon index error 68% upper confidence limit (Gamma_hilim_CSC2)spect.indexfloatRAJ2000Right ascension (J2000) (ra)degpos.eq.ra;meta.mainDEJ2000Delcination (J2000) (dec)degpos.eq.dec;meta.mainCXCCXC name (2CXO JHHMMSS.s+DDMMSS) (name)meta.id;meta.maincharObsID? Observation identifier (obsid)meta.id;obs.param;obsintnullable
J/other/JHEAP/36.152/rqq_csc2Radio quiet quasars CSC2 samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSpNameSpectral file name (SPECTRAL_NAME)meta.id;meta.filecharPIPhoton index (PHOTON_INDEX)spect.indexdoubleE_PI[] Photon index error upper value (PHOTON_INDEX_MIN)stat.error;stat.maxdoublee_PIPhoton index error lower value (PHOTON_INDEX_MAX)stat.errordoublezQuasars redshift from CSC2 catalog (REDSHIFT)src.redshiftdoublegammaCSC2CSC2 photon index (Gamma_CSC2)spect.indexdoubleb_gammaCSC2CSC2 photon index error 68% lower confidence limit (Gamma_lolim_CSC2)spect.indexfloatB_gammaCSC2CSC2 photon index error 68% upper confidence limit (Gamma_hilim_CSC2)spect.indexfloatRAJ2000Right ascension (J2000) (ra)degpos.eq.ra;meta.mainDEJ2000Delcination (J2000) (dec)degpos.eq.dec;meta.mainCXCCXC name (2CXO JHHMMSS.s+DDMMSS) (name)meta.id;meta.maincharObsID? Observation identifier (obsid)meta.id;obs.param;obsintnullable