| Show | Sort | Column | Constraint | Explain (UCD) |
| | | recno | | Record number assigned by the VizieR team. Should Not be used for identification. (meta.record) (RECORD) |
| | | plots | | See the pdf file (meta.ref.url) (DATA_LINK) image |
| | | Seq | | Rank of X-ray source by match probability (meta.id) (ID_NUMBER) |
| | | 4eRASS | (char) | eROSITA source ID following IAU naming conventions (4eRASS JHHMMSS.s+DDMMSS) (meta.id;meta.main) (ID_MAIN) |
| | | RA_ICRS | deg | (i) Right ascension (ICRS) of X-ray source (pos.eq.ra;meta.main) (POS_EQ_RA_MAIN) |
| | | DE_ICRS | deg | (i) Declination (ICRS) of X-ray source (pos.eq.dec;meta.main) (POS_EQ_DEC_MAIN) |
| | | epos | arcsec | One-sigma positional error of X-ray source (stat.error;pos) (ERROR) |
| | | DetLike | | X-ray detection likelihood (stat.likelihood) (STAT_LIKELIHOOD) |
| | | ExtLike | | X-ray extent likelihood (stat.likelihood) (STAT_LIKELIHOOD) |
| | | CR | ct/s | X-ray count rate in 0.2-2.3keV (phot.count;em.X-ray) (PHOT_COUNT-RATE_X) |
| | | 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) (PHOT_FLUX_X) |
ALL cols | | | |
| | | Name4FGL | (char) | Name of gamma-ray source in 4FGL-DR4 catalog (meta.id) (ID_ALTERNATIVE) |
| | | Class2-4FGL | (char) | Class of low-probability association of gamma-ray source in 4FGL-DR4 catalog (meta.code.class) (CLASS_CODE) |
| | | Assoc2-4FGL | (char) | Low-probability association of gamma-ray source in 4FGL-DR4 catalog (stat.fit.goodness) (STAT_PROBABILITY) |
| | | RA4deg | deg | 4FGL right ascension (ICRS) of gamma-ray source (pos.eq.ra) (POS_EQ_RA_OTHER) |
| | | DE4deg | deg | 4FGL declination (ICRS) of gamma-ray source (pos.eq.dec) (POS_EQ_DEC_OTHER) |
| | | amaj4FGL | arcmin | Semi-major axis of gamma-ray 95% error ellipse (phys.angSize.smajAxis;pos.errorEllipse) (ERROR) |
| | | bmin4FGL | arcmin | Semi-minor axis of gamma-ray 95% error ellipse (phys.angSize.sminAxis;pos.errorEllipse) (EXTENSION_SMIN) |
| | | phi4FGL | deg | Position angle of gamma-ray error ellipse on the sky (pos.posAng;pos.errorEllipse) (POS_POS-ANG) |
| | | nu4FGL | deg-2 | Density of eRASS:4 X-ray sources within a 2 deg radius around gamma-ray source (src.density) (PHYS_DENSITY_SURFACE) |
| | | ExpField | | Expectation value for the number of X-ray chance alignments (denominator in Eq. 4) (meta.number) (NUMBER) |
| | | F4FGL | mW/m2 | gamma-ray source flux in the range 100 MeV - 100 GeV (phot.flux.density;em.gamma.hard) (PHOT_FLUX_GAMMA) |
| | | PriorPSR | | Prior probability for a source to be a pulsar, rather than blazar, based on its gamma-ray properties (stat.fit.goodness) (STAT_PROBABILITY) |
| | | Prioryoungold | | Prior probability for a source to be a young pulsar, rather than millisecond pulsar, based on its gamma-ray properties (stat.fit.goodness) (STAT_PROBABILITY) |
ALL cols | | | |
| | | 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) (PHYS_DISTANCE_NORM) |
| | | BFpos | | Purely positional Bayes factor of the association, i.e. value of Eq. 4 with c = 1. (pos) (DATA_SCALE-FACTOR) |
| | | logFluxratio | | Logarithmic gamma-to-X-ray flux ratio (phot.flux;arith.ratio) (PHOT_FLUX_RATIO) |
| | | 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) (STAT_LIKELIHOOD-RATIO) |
| | | 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) (STAT_LIKELIHOOD-RATIO) |
| | | 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) (STAT_LIKELIHOOD-RATIO) |
| | | 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) (STAT_PROBABILITY) |
| | | 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) (STAT_PROBABILITY) |
| | | 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) (STAT_PROBABILITY) |
| | | 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) (STAT_PROBABILITY) |
| | | Pi | | Combined posterior probability (Eq. 8) for the given X-ray and gamma-ray source to be matched (stat.fit.goodness) (STAT_PROBABILITY) |
| | | Comment | (char) | Comment on the match, for instance, on possible alternative nature of the X-ray source (meta.note) (REMARKS) |
ALL cols | | | |