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SVOM trigger GRB 250831A
Source 3 (SWIFT J013932.8-175532)

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: 4: Known X-ray Source
RA (J2000):01h 39m 32.85s (= 24.88687°)
Dec (J2000):-17° 55′ 32.6″ (= -17.9257°)
Error (radius, 90%):8.1″
Detection flag:Poor
XRT exposure:1559 s (vignetting corrected)
Peak rate:3.0 (+2.2, -1.6) ×10-3 ct s-1
Peak flux:1.3 (+1.0, -0.7) ×10-13 erg cm-2 s-1
Has spectral fit?Yes
NH 1.46 × 1020 cm-2
Γ -2.43
Database ID:390
Things to check:
Optical Loading: No warning (automatic)
Stray Light: No warning (automatic)
Extended Emission: No warning (automatic)
Catalogue information
Known X-ray emitter?Yes - LSXPS J013933.3-175540
Cat. rate1:9.9 (±2.4) ×10-4 ct s-1
Cat. flux2:1.04 (±0.26) ×10-12 erg cm-2 s-1
Observed/Cat. flux1.0 σ
Fading? ≤3-σ signifance.
Near 2MASS source? Yes, 2 matches. Show details.
Near SIMBAD source?Yes - SDSS J013934.38-175541.9 is 23.8″ away.
High proper motion star?No.
Catalogue SearchCone search radius 24″ 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