Multiwavelength Identification of 4FGL-DR4 Sources using MUWCLASS and CSCv2.0 Project Overview

Warning: Please refresh the website if synchronization between the interactive plotting on the left, the summary panel on the right, and the interactive table below is not functioning.

README

Aladin-Lite Visualization Window

1. Please select your interested FGL source from the drop-down list.
2. You can filter on the classification confidence threshold (CT, the higher the value is the more confidence is the classification, a default value CT=2 is used for confident classifications) and the X-ray source significance by moving the slidebars below the visualization plot.
3. You can select image layers and catalog markers from the Manage Layers Button. More details on Aladin Lite documentation page.,
4. When click on a particular source, a summary box will pop up including the CSC name at 1st line, RA DEC and X-ray positional uncertainty at 2nd line, simbad link at 3rd line, Fb and HR_h(ms) at 4th line, intra-observation variability at 5th line, counterparts associations at 6th line with a link to the cross-matching plots, and the classifications results for different counterpart associations (showing the top two) below and the combined classification results.
5. The cross-matching plot includes the X-ray source and its positional uncertainty in blue error ellipse, and its potential MW counterparts in green error ellipses. The MW catalogs used for each MW counterpart are overplotted with the error ellipses where g is for gaia, t for tmass, a for allwise, and c for catwise2020, followed by p_i from NWAY. The title of the plot includes p_any from NWAY and chance coincidence probability p_c.

Summary Panel

The (Classification) Summary panel shows a summarized information of the 4FGL-DR4 source, the area covering fraction by the X-ray observations used in CSCv.20, and the classifications for all sources and confident classifications of significant sources or bright sources, as well as comments if available.

Interactive Table

1. All X-ray sources without significance or CT cuts per FGL field will be present in the table.
2. To select only the potential X-ray counterparts of the GeV source, you can click on "Candidates" option from the Filter button. To select all sources from the field or all X-ray sources from all FGL fields, you can select "All field sources" or "All sources".
3. You can choose to show more columns by selecting the column names from the Column visibillity button.
4. You can download the csv file of the table here.

Column definitions:

• 2CXO_Name: X-ray name from CSCv2.0
• FGL: GeV source name from 4FGL-DR4
• GLON, GLAT: Galactic coordinate of the gamma-ray source
• Class: classification from MUWCLASS
• CT: classification confidence threshold
• S/N: X-ray significance
• Fb,s,m,h: X-ray band fluxes at the broad (0.5-7 keV), soft (0.5-1.2 keV), medium (1.2-2 keV), hard (2-7 keV) bands
• HR_hms, HM_ms, HR_hm: X-ray hardness ratios
• P_inter, P_intra: X-ray inter-observation (between observation) and intra-observation (within one observation) variability probability
• Nobs: number of observations with net_cnt>50
• Counts: total net counts from observations with net_cnt>50
• PL Γ: photon index from xspowerlaw (PL) model
• kT_MK: The temperature of the plasma, in keV, from xsmekal model
• kT_BB: The temperature of the object, in keV, from xsbbodyrad model
• Δlog10(Z): Bayesian evidence (0 for the best model)
• log10(nH): from the best fitted model
• nH_LAB: LAB_HI_Survey Maps
• Gmag,BPmag,RPmag: Gaia DR3 magnitudes
• Jmag,Hmag,Kmag: 2mass magnitudes
• W1mag,W2mag: WISE magnitudes
• rgeo: Gaia EDR3 geometric distance posterior, in pc
• RPlx: Gaia DR3 Parallax divided by its standard error
• PM: Gaia DR3 Total proper motion, in mas/yr
• epsi: Gaia DR3 Excess noise of the source, in mas
• ruwe: Gaia DR3 Renormalised unit weight error

Close

(Classification) Summary

Name=4FGL J0859.3-4342,GLON=265.1,GLAT=1.5

Signif=8.8,EnergyFlux100=9.0e-12cgs,Var_idx=14.5,Sig_Cur=4.2

X-ray Covering faction=0.96;GCLASS=nan;GASSOC=nan

All classifications: 19NS 3AGN 5LMXB 1HMXB 7CV 104YSO 5HM-STAR 5LM-STAR

Classifications of significant sources (S/N>=5) with CT>=2 or bright sources with Fb>5e-14 c.g.s.: 2NS 1AGN 51YSO 2HM-STAR 1LM-STAR / 1NS 1HMXB 2CV 1HM-STAR

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