X-ray photometry
Full (0.5–7), soft (0.5–2) and hard (2–7 keV) bands.
Results
This position is within the central 3′ ICM region. Diffuse intracluster emission can bias the background estimate, affecting the flux, upper limit and detection significance.
The quoted intervals do not include this uncertainty. Contact Shouyi Wang at sywang0302@gmail.com for a dedicated analysis.
| Band / PB | Γ = 1.4 | Γ = 2.0 | Status | ||
|---|---|---|---|---|---|
| Flux / upper limit | Sensimap | Flux / upper limit | Sensimap (converted) | ||
Flux: erg cm−2 s−1. Detections: posterior median [central 68% credible interval]. “<”: one-sided 90% upper limit. Uncertainties are statistical only. Sensimap: nominal ΔC = 25 depth, not a measured upper limit.
Full-band R90 / 1.7–5 R90 background annulusCatalog full-band R90 (XID)Catalog mask
Counts & diagnostics
Method
Photometry. All three bands use the full-band R90 aperture. Background is estimated from a surrounding annulus (1.7–5 R90), excluding catalogued sources. Each band returns a flux for PB < 0.01 or a 90% upper limit otherwise. No photometry is provided if the target R90 aperture overlaps that of a catalogued source.
Flux conversion. Counts are converted to flux using model-weighted CIAO exposure maps for power-law spectra with Γ = 1.4 and 2.0 and fixed Galactic absorption. Fluxes are corrected for aperture losses, but not for absorption.
Sensitivity. Sensimap reports the local survey sensitivity at ΔC = 25. Its Γ = 2 values are rescaled from the Γ = 1.4 map using the corresponding flux conversion. This survey depth differs from the 90% upper limit derived from the observed counts.
For detailed extraction, response generation or spectral analysis, contact Shouyi Wang at sywang0302@gmail.com.
Citation & data
Please cite Wang et al. (2026), CLUES I: A 2 Ms Point-Source Catalog of the Abell 2744 Field when using this tool or the CLUES data products.
Catalog and data releases: CLUES on GitHub.