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J/A+A/476/759     X-ray properties of AGN from the CJF sample   (Britzen+, 2007)

The soft X-ray properties of AGN from the CJF sample. A correlation analysis between soft X-ray and VLBI properties. Britzen S., Brinkmann W., Campbell R.M., Gliozzi M., Readhead A.C.S., Browne I.W.A., Wilkinson P. <Astron. Astrophys., 476, 759-777 (2007)> =2007A&A...476..759B
ADC_Keywords: Active gal. nuclei ; X-ray sources Keywords: instrumentation: interferometers - galaxies: active - X-rays: galaxies - radio continuum: galaxies Abstract: We present the soft X-ray properties obtained in the ROSAT All-Sky survey and from pointed PSPC observations for the AGN in the complete flux-density limited Caltech-Jodrell Bank flat spectrum sample (hereafter CJF). CJF is a VLBI survey (VLBA observations at 5GHz) of 293 AGN with detailed information on jet component motion. We investigate and discuss the soft X-ray properties of this AGN sample and examine the correlations between X-ray and VLBI properties, test beaming scenarios, and search for the discriminating properties between the sub-samples detected and not detected by ROSAT. Comparing the observed and the predicted X-ray fluxes by assuming an Inverse Compton (IC) origin for the observed X-rays, we compute the beaming or Doppler factor, δIC, for the CJF sources and compare it with the equipartition Doppler factor, δEQ. We further contrast the Doppler factors with other beaming indicators derived from the VLBI observations, such as the value of the expansion velocity, and the observed and intrinsic brightness temperature. We calculate two different core dominance parameters (R): the ratio of total VLBI flux to single-dish flux, RV, and the ratio of the VLBI core-component flux to single-dish flux, RC. In addition, we investigate the large-scale radio structure of the AGN and the difference between the pc- and kpc-scale structure (misalignment) with regard to the X-ray observations. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 172 293 CJF sources in the ROSAT All Sky Survey refs.dat 67 32 References table3.dat 123 61 Calculated values for sources not detected by ROSAT table4.dat 123 89 Calculated values for sources detected by ROSAT table5.dat 90 41 Calculated values for sources not detected by ROSAT and not shown in the plots of this paper table6.dat 90 63 Calculated values for sources detected by ROSAT and not shown in the plots of this paper
See also: VIII/60 : Interferometer phase calibration sources (Patnaik+ 1998) VIII/72 : CLASS survey of radio sources (Myers+, 2003) VII/248 : Quasars and Active Galactic Nuclei (12th Ed.) (Veron+ 2006) J/ApJS/95/345 : Second Caltech-Jodrell Bank VLBI Survey. I. (Taylor+ 1994) J/ApJ/589/733 : VLBI polarimetry of CJF sources (Pollack+, 2003) J/A+A/472/763 : Multi-epoch VLBI survey of CJF sources (Britzen+, 2007) J/A+A/474/1093 : 30GHz flux densities of CJF sources (Lowe+, 2007) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 8 A8 --- CJF CJF name (HHMM+DDd) (G1) 10- 47 A38 --- ONames Other names (1) 49- 58 A10 --- Type Type (2) 59 A1 --- n_Type [nr*] Note on Type (3) 61 A1 --- l_z Limit flag on z 62- 68 F7.5 --- z ? Redshift 69 A1 --- u_z [?] Uncertainty flag on z 70- 71 A2 --- f_z [,t ] 73 A1 --- n_z [r] Note on z (3) 75- 79 F5.2 mag Vmag ? V magnitude 80 A1 --- u_Vmag [?] Uncertainty flag on Vmag 81 A1 --- n_Vmag [r] Note on Vmag (3) 83- 87 I5 mJy S5GHz 5GHz Green Bank flux 88 A1 --- l_EXML Limit flag on EXML 89- 94 F6.2 --- EXML Likelihood of the existence of an X-ray source at the radio position in the RASS 96-101 F6.2 fW/m2 FX X-ray flux in the 0.1-2.4keV band 103-106 F4.2 fW/m2 e_FX ? rms uncertainty on FX 108-109 A2 --- Obs [p s] Pointed or Survey observation (4) 111-122 A12 --- VLA VLA structure (5) 123-129 A7 --- r_VLA Reference(s) for VLA, in refs.dat file 131 I1 --- Jet [0/5]? Value describing jet structure on large (VLA) scales (6) 132 A1 --- u_Jet [?] Uncertainty flag on Jet 134 A1 --- l_PA(VLA) [~] Limit flag on PA(VLA) 135-137 I3 deg PA(VLA) ?=- Position angle of the VLA jet 138 A1 --- --- [/-,] 139 A1 --- l_PA(VLA)2 [~] Limit flag on PA(VLA)2 140-142 I3 deg PA(VLA)2 ?=- Second value of position angle of the VLA jet 143 A1 --- --- [,/)] 144-146 I3 deg PA(VLA)3 ?=- Third value of Position angle of the VLA jet 148 A1 --- n_PA(VLA) [1?+] Note pn PA(VLA) 150 A1 --- l_PA(VLBI) [~] Limit flag on PA(VLBI) 151-153 I3 deg PA(VLBI) ?=- Position angle of the VLBI jet 154 A1 --- --- [/-] 155 A1 --- l_PA(VLBI)2 [~] Limit flag on PA(VLBI)2 156-158 I3 deg PA(VLBI)2 ?=- Second value of Position angle of the VLBI jet 160-162 I3 deg DPA ?=- Difference between the two position angles 163 A1 --- --- [/-] 164-166 I3 deg DPA2 ? Second value of difference between the two position angles 168-172 A5 --- n_DPA2 Note on DPA2
Note (1): Common name of the object, if available, and the JVAS J2000 name (Wilkinson et al. 1998 & Browne 1998, Cat. VIII/60). In case the source is not observed within JVAS, we used the Veron-Cetty & Veron (2001, Cat. VII/224) edition of A Catalogue of Quasars and Active Nuclei, or the CLASS source name (Myers et al., 2003, Cat. VIII/72) Note (2): Type of objects as follows: Q = quasar B = BL Lac object G = radio galaxy HPQ = high polarized quasar LPQ = low polarized quasar CSO = compact symmetric object Sy 1 = Seyfert galaxies type 1 Sy 2 = Seyfert galaxies type 2 pec = source with peculiar properties cluster = source belonging to a cluster GL = gravitational lens system C.g.l. = candidate gravitational lens Note (3): Note as follows: r = priv. comm. R. Vermeulen n = NED information * = Kim et al. (1991ApJ...379...80K) and Slee & Siegman (1983PASAu...5..114S) Note (4): Observation as follows: s = source found by the standard analysis of the ROSAT Survey data p = source found in the field of a pointed PSPC or HRI observation Note (5): VLA structure as follows: ? = unknown / = no VLA information found U = unresolved component R = slightly resolved component J = jet-like extended component cJ = complex jet-like extended component D = double source cD = complex double source JCJ = jet- and counter-jet cJCJ = complex jet- and counter-jet H = halo emission GL = gravitational lens system C.g.l.: Candidate gravitational lens Note (6): This is the complexity-factor (see Sect. 4.3.2 for a more detailed description). Its maximum value is 5, describing the most complex extended structure.
Byte-by-byte Description of file: refs.dat
Bytes Format Units Label Explanations
1- 2 I2 --- Ref Reference number 4- 22 A19 --- BibCode BibCode 24- 44 A21 --- Aut Author's name 46- 67 A22 --- Com Comments
Byte-by-byte Description of file: table[34].dat
Bytes Format Units Label Explanations
1- 8 A8 --- CJF CJF name (HHMM+DDd) (G1) 10- 15 F6.3 c beta Apparent speed, βapp 17- 21 F5.2 --- dIC(f) ? IC Doppler factor for alpha=-0.75 23- 27 F5.2 --- dICc(f) ? Continuous IC Doppler factor for alpha=-0.75 29- 32 F4.2 --- dEQ(f) Equipartition argument for alpha=-0.75 34- 38 F5.2 [10-11K] logTB(f) ? Observed brightness temperature for alpha=-0.75 40- 44 F5.2 [10-11K] logTBic(f) ? Intrinsic brightness temperature for alpha=-0.75 46- 51 F6.2 --- gamma(f) ? Bulk Lorentz factor, γsl for alpha=-0.75 53- 58 F6.2 --- phi(f) Angle to the line of sight for alpha=-0.75 60- 64 F5.2 --- dIC ? IC Doppler factor for observed alpha 66- 71 F6.2 --- dICc ? Continuous IC Doppler factor for observed alpha 73- 76 F4.2 --- dEQ Equipartition argument for observed alpha 78- 82 F5.2 [10-11K] logTB ? Observed brightness temperature for observed alpha 84- 88 F5.2 [10-11K] logTBic ? Intrinsic brightness temperature for observed alpha 90- 95 F6.2 --- gamma ? Bulk Lorentz factor, γsl for observed alpha 97-102 F6.2 --- phi Angle to the line of sight for observed alpha 104-107 I4 mJy FVLBI 5GHz integrated flux (from Paper I, Britzen et al., Cat. J/A+A/472/763) 109-112 I4 mJy FBLVIc 5GHz VLBI flux (from Taylor et al., 1996ApJS..107...37T) 114-118 F5.2 [-] logRC Core dominance RC (ratio of the VLBI core-component flux to single-dish flux) 120-123 F4.2 --- RV Core dominance RV (ratio of total VLBI flux to single-dish flux)
Byte-by-byte Description of file: table[56].dat
Bytes Format Units Label Explanations
1- 8 A8 --- CJF CJF name (HHMM+DDd) (G1) 10- 14 F5.2 --- dIC(f) ? IC Doppler factor for alpha=-0.75 16- 20 F5.2 --- dICc(f) ? Continuous IC Doppler factor for alpha=-0.75 22- 26 F5.2 --- dEQ(f) Equipartition argument for alpha=-0.75 28- 32 F5.2 [10-11K] logTB(f) ? Observed brightness temperature for alpha=-0.75 34- 38 F5.2 [10-11K] logTBic(f) ? Intrinsic brightness temperature for alpha=-0.75 40- 44 F5.2 --- dIC ? IC Doppler factor for observed alpha 46- 51 F6.2 --- dICc ? Continuous IC Doppler factor for observed alpha 53- 56 F4.2 --- dEQ Equipartition argument for observed alpha 58- 62 F5.2 [10-11K] logTB ? Observed brightness temperature for observed alpha 64- 68 F5.2 [10-11K] logTBic ? Intrinsic brightness temperature for observed alpha 70- 73 I4 mJy FVLBI 5GHz integrated flux (from Paper I, Britzen et al., Cat. J/A+A/472/763) 75- 79 I5 mJy FBLVIc 5GHz VLBI flux (from Taylor et al., 1996ApJS..107...37T) 81- 85 F5.2 [-] logRC Core dominance RC (ratio of the VLBI core-component flux to single-dish flux) 87- 90 F4.2 --- RV Core dominance RV (ratio of total VLBI flux to single-dish flux)
Global notes: Note (G1): Objects identified as CJF BHHMM+DDd in Simbad
History: From electronic version of the journal References: Britzen et al., Paper I 2007A&A...472..763B, Cat. J/A+A/472/763 Britzen et al., Paper II 2007, A&A submitted
(End) Patricia Vannier [CDS] 28-Jan-2008
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