VizieR

CfA VizieR . ADAC VizieR . Cambridge (UK) VizieR . IUCAA VizieR . INASAN VizieR .
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VizieR

Simple TargetList Of TargetsFast Xmatch with large catalogs or Simbad
Target Name (resolved by Sesame) or Position:
 Target dimension:
NB: The epoch used for the query is the original epoch of the table(s)Radius Box size

  
J/A+A/684/A208
  Unassociated Fermi-LAT sources seen with eROSITA (Mayer+, 2024)
ReadMe+ftp
2024A&A...684A.208M
Similar Catalogs
image
Post annotation 		img(gal)
1.J/A+A/684/A208/catalog(c)Full list of candidates with a probability of being a pulsar-type counterpart PiPSR>0.02[image] (909 rows)
2.J/A+A/684/A208/cand(c)Corresponding list of sources which failed visual inspection (193 rows)
3.J/A+A/684/A208/priorResult of our machine-learning based prior classification of gamma-ray sources into possible young/millisecond pulsars and blazars (2577 rows)

Simple ConstraintList Of Constraints
 
Query by Constraints constraints help applied on Columns (Output Order: + - )
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Column  Constraint Explain   (UCD)
  (ALL)recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
  (1)plots (char) See the pdf file (meta.ref.url)
  (1)Seq  Rank of X-ray source by match probability (meta.id)
  (1+2)4eRASS (char) eROSITA source ID following IAU naming conventions (4eRASS JHHMMSS.s+DDMMSS) (meta.id;meta.main)
  (1+2)RA_ICRS deg (i) Right ascension (ICRS) of X-ray source (pos.eq.ra;meta.main)
  (1+2)DE_ICRS deg (i) Declination (ICRS) of X-ray source (pos.eq.dec;meta.main)
  (1+2)epos arcsec One-sigma positional error of X-ray source (stat.error;pos)
  (1+2)DetLike  X-ray detection likelihood (stat.likelihood)
  (1+2)ExtLike  X-ray extent likelihood (stat.likelihood)
  (1+2)CR ct/s X-ray count rate in 0.2-2.3keV (phot.count;em.X-ray)
  (1+2)FeRASS mW/m2 X-ray source flux in 0.2-2.3keV, determined via an energy conversion factor from the count rate (phot.flux;em.X-ray)

ALL cols		    
 (i)indexed column
   (ALL)Name4FGL (char) Name of gamma-ray source in 4FGL-DR4 catalog (meta.id)
  (1+2)Class2-4FGL (char) Class of low-probability association of gamma-ray source in 4FGL-DR4 catalog (meta.code.class)
  (1+2)Assoc2-4FGL (char) Low-probability association of gamma-ray source in 4FGL-DR4 catalog (stat.fit.goodness)
  (1+2)RA4deg deg 4FGL right ascension (ICRS) of gamma-ray source (pos.eq.ra)
  (1+2)DE4deg deg 4FGL declination (ICRS) of gamma-ray source (pos.eq.dec)
  (1+2)amaj4FGL arcmin Semi-major axis of gamma-ray 95% error ellipse (phys.angSize.smajAxis;pos.errorEllipse)
  (1+2)bmin4FGL arcmin Semi-minor axis of gamma-ray 95% error ellipse (phys.angSize.sminAxis;pos.errorEllipse)
  (1+2)phi4FGL deg Position angle of gamma-ray error ellipse on the sky (pos.posAng;pos.errorEllipse)
  (1+2)nu4FGL deg-2 Density of eRASS:4 X-ray sources within a 2 deg radius around gamma-ray source (src.density)
  (1+2)ExpField  Expectation value for the number of X-ray chance alignments (denominator in Eq. 4) (meta.number)
  (1+2)F4FGL mW/m2 gamma-ray source flux in the range 100 MeV - 100 GeV (phot.flux.density;em.gamma.hard)
   (ALL)PriorPSR  Prior probability for a source to be a pulsar, rather than blazar, based on its gamma-ray properties (stat.fit.goodness)
   (ALL)Prioryoungold  Prior probability for a source to be a young pulsar, rather than millisecond pulsar, based on its gamma-ray properties (stat.fit.goodness)

ALL cols		    
 (i)indexed column
  (1+2)dmahalanobis  Mahalanobis distance, i.e. the distance between X-ray and gamma-ray source positions, normalized by the total positional error in the given direction (pos.distance)
  (1+2)BFpos  Purely positional Bayes factor of the association, i.e. value of Eq. 4 with c = 1. (pos)
  (1+2)logFluxratio  Logarithmic gamma-to-X-ray flux ratio (phot.flux;arith.ratio)
  (1+2)PriorfrAGN  Likelihood ratio, assuming AGN nature, of having a match rather than a background X-ray source based on only X-ray and gamma-ray fluxes (Eqs. 6 and 7) (stat.likelihood)
  (1+2)PriorfrYNG  Likelihood ratio, assuming young pulsar nature, of having a match rather than a background X-ray source based on only X-ray and gamma-ray fluxes (Eqs. 6 and 7) (stat.likelihood)
  (1+2)PriorfrMSP  Likelihood ratio, assuming millisecond pulsar nature, of having a match rather than a background X-ray source based on only X-ray and gamma-ray fluxes (Eqs. 6 and 7) (stat.likelihood)
  (1+2)PiPSR  Combined posterior probability (Eq. 8) for the given X-ray and gamma-ray source to be matched, and to be of pulsar nature (stat.fit.goodness)
  (1+2)PiAGN  Combined posterior probability (Eq. 8) for the given X-ray and gamma-ray source to be matched, and to be of AGN (blazar) nature (stat.fit.goodness)
  (1+2)PiYNG  Combined posterior probability (Eq. 8) for the given X-ray and gamma-ray source to be matched, and to be of young pulsar nature (stat.fit.goodness)
  (1+2)PiMSP  Combined posterior probability (Eq. 8) for the given X-ray and gamma-ray source to be matched, and to be of millisecond pulsar nature (stat.fit.goodness)
  (1+2)Pi  Combined posterior probability (Eq. 8) for the given X-ray and gamma-ray source to be matched (stat.fit.goodness)
  (1+2)Comment (char) Comment on the match, for instance, on possible alternative nature of the X-ray source (meta.note)
  (2)Seq (char) Rank of X-ray source by match probability (meta.id)

ALL cols		    
 (i)indexed column
  (3)SymLon  Symmetric Galactic longitude (pos.galactic.lon)
  (3)SymLat  Symmetric Galactic latitude (pos.galactic.lat)
  (3)logVarInd  log variability index (meta.code;src.var.index)
  (3)FracVar  Fractional variability (em.freq;src.var)
  (3)PowerLawInd  Power law index, PL_Index (spect.index)
  (3)logParInd  log-parabola Index, LP_Index (spect.index)
  (3)DeltaInd  Difference between power law and log-parabola indices, LP_Index - PL_Index (spect.index)
  (3)LogParBeta  log-parabola beta parameter (spect.index)
  (3)logSigCurv  (n) Curvature significance for the log-parabola model LPSigCurv scales with the source detection significance, (spect.index)
  (3)n_logSigCurv (char) [I] I for infinity (meta.note)
  (3)ModSigCurv  (n) 3logLPSigCurv–2logSignifAvg value (stat.fit.param)
  (3)n_ModSigCurv (char) [I] I for infinity (meta.code)
  (3)EPivot  Pivot Energy (phys.energy)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (3)EFluxErr  logUncEnergyFlux100-0.4logEnergy_Flux100 value (stat.fit.param)
  (3)SigCombined  (n) 3logLP_SigCurv - logVariability_Index value (stat.fit.param)
  (3)n_SigCombined (char) [I] I for infinity (meta.note)
  (3)HR12  Hardness ratio based on bands 0.3-1.0GeV/0.05-0.3GeV (phot.flux;arith.ratio)
  (3)HR23  Hardness ratio based on bands 1.0-3.0GeV/0.3-1.0GeV (phot.flux;arith.ratio)
  (3)HR34  Hardness ratio based on bands 3-30GeV/1.0-3.0GeV (phot.flux;arith.ratio)
  (3)HR45  Hardness ratio based on bands 30-1000GeV/3-30GeV (phot.flux;arith.ratio)
  (3)K13  Curvature parameter based on bands 1.0-3.0GeV/0.3-1.0GeV/0.05-0.3GeV (stat.fit.param)
  (3)K24  Curvature parameter based on bands 3-30GeV/1.0-3.0GeV/0.3-1.0GeV (stat.fit.param)
  (3)K35  Curvature parameter based on bands 30-1000GeV/3-30GeV/1.0-3.0GeV (stat.fit.param)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
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