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SVOM trigger GRB 250727A
Source 1 (SWIFT J234539.1-811248)

Image of the XRT detection

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

Image of the LC

Spectrum

Image of the spectrum

Enhanced position

Image of the UVOT image
Source details
Rank/Classification: 2: Outbursting source
RA (J2000):23h 45m 39.52s (= 356.41465°)
Dec (J2000):-81° 12′ 50.4″ (= -81.2140°)
Error (radius, 90%):4.2″ (enhanced position)
Detection flag:Good
XRT exposure:5.9 ks (vignetting corrected)
Peak rate:0.013 (±0.003) ct s-1
Peak flux:5.5 (±1.4) ×10-13 erg cm-2 s-1
Mean rate:0.013 (±0.003) ct s-1
Mean flux:5.5 (±1.4) ×10-13 erg cm-2 s-1
The source is fading with 3.7-σ significance
Has spectral fit?Yes
NH 9.71 × 1020 cm-2
Γ 2.01
Database ID:376
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 limit20.045 ct s-1
Obs rate/Rass UL≤0 σ
Fading? Yes (3.7-σ difference between at least one detection and a later detection or upper limit).
Near 2MASS source? No
Near SIMBAD source?No.
High proper motion star?No.
Catalogue SearchCone search radius 12″ 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.