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SVOM trigger GRB 250903A
Source 4 (SWIFT J234756.6-755011)

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 47m 56.63s (= 356.98596°)
Dec (J2000):-75° 50′ 11.8″ (= -75.8366°)
Error (radius, 90%):6.4″
Detection flag:Reasonable
XRT exposure:2.4 ks (vignetting corrected)
Peak rate:3.0 (+1.7, -1.3) ×10-3 ct s-1
Peak flux:1.3 (+0.7, -0.6) ×10-13 erg cm-2 s-1
Mean rate:3.0 (+1.7, -1.3) ×10-3 ct s-1
Mean flux:1.3 (+0.7, -0.6) ×10-13 erg cm-2 s-1
Has spectral fit?Yes
NH 4.36 × 1020 cm-2
Γ 1.06
Database ID:397
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 limit20.14 ct s-1
Obs rate/Rass UL≤0 σ
Fading? ≤3-σ signifance.
Near 2MASS source? Yes, 1 match. Show details.
Near SIMBAD source?No.
High proper motion star?No.
Catalogue SearchCone search radius 19″ 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