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SVOM trigger GRB 250727A
Source 2 (SWIFT J234406.8-810315)

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):23h 44m 06.83s (= 356.02844°)
Dec (J2000):-81° 03′ 15.6″ (= -81.0543°)
Error (radius, 90%):8.5″
Detection flag:Good
XRT exposure:5.9 ks (vignetting corrected)
Peak rate:5.2 (+2.6, -2.0) ×10-3 ct s-1
Peak flux:2.24 (+1.14, -0.86) ×10-13 erg cm-2 s-1
Mean rate:2.6 (+1.0, -0.7) ×10-3 ct s-1
Mean flux:1.1 (+0.4, -0.3) ×10-13 erg cm-2 s-1
The source is fading with 1.7-σ significance
Has spectral fit?Yes
NH 2.97 × 1021 cm-2
Γ 1.51
Database ID:377
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 limit20.047 ct s-1
Obs rate/Rass UL≤0 σ
Fading? ≤3-σ signifance.
Near 2MASS source? No
Near SIMBAD source?No.
High proper motion star?No.
Catalogue SearchCone search radius 25″ 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.