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Einstein Probe trigger EP250821a
Source 7 (SWIFT J191825.4-432016)

Image of the XRT detection

This source is detected in 1 block. Show all images.

Image of the LC

Spectrum

Image of the spectrum
Source details
Rank/Classification: 3: Uncatalogued X-ray source
RA (J2000):19h 18m 25.47s (= 289.60611°)
Dec (J2000):-43° 20′ 16.1″ (= -43.3378°)
Error (radius, 90%):7.0″
Detection flag:Poor
XRT exposure:17.3 ks (vignetting corrected)
Peak rate:2.85 (+1.27, -0.99) ×10-3 ct s-1
Peak flux:1.2 (+0.5, -0.4) ×10-13 erg cm-2 s-1
Mean rate:2.85 (+1.27, -0.99) ×10-3 ct s-1
Mean flux:1.2 (+0.5, -0.4) ×10-13 erg cm-2 s-1
Has spectral fit?Yes
NH 4.66 × 1023 cm-2
Γ 9.67
Database ID:437
Things to check:
Optical Loading: No warning (automatic)
Stray Light: No warning (automatic)
Extended Emission: No warning (automatic)
Catalogue information
Known X-ray emitter?No. Get XMM upper limit
Rass upper limit20.037 ct s-1
Obs rate/Rass UL≤0 σ
Fading? ≤3-σ signifance.
Near 2MASS source? Yes, 2 matches. Show details.
Near SIMBAD source?No.
High proper motion star?No.
Catalogue SearchCone search radius 21″ Vizier | Simbad | NED | X-ray master | LSXPS | 3XMM-DR5

Notes
All XRT count rates and fluxes are 0.3—10 keV
1Catalogued count-rates have been converted to XRT equivalents.
2Catalogued upper limits and fluxes have been converted to the XRT equivalent using the automatic power-law spectral fit described above.

2MASS objects near the source

ID Position Offset from
XRT source		 J H K