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GRB 250804B — Source 3 (SWIFT J024046.0-463434)

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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

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Source details
Rank/Classification: 4: Known X-ray Source
RA (J2000):02h 40m 46.19s (= 40.19246°)
Dec (J2000):-46° 34′ 40.8″ (= -46.5780°)
Error (radius, 90%):6.7″ (enhanced position)
Detection flag:Good
XRT exposure:942 s (vignetting corrected)
Peak rate:0.018 (+0.006, -0.005) ct s-1
Peak flux:7.7 (+2.6, -2.1) ×10-13 erg cm-2 s-1
Mean rate:0.018 (+0.006, -0.005) ct s-1
Mean flux:7.7 (+2.6, -2.1) ×10-13 erg cm-2 s-1
Has spectral fit?Yes
NH 1.89 × 1020 cm-2
Γ 9.75
Database ID:1457
Possible issues:
Optical Loading: No warning (automatic)
Stray Light: No warning (automatic)
Extended Emission: No warning (automatic)
Catalogue information
Known X-ray emitter?Yes - XMMSL3 J024045.9-463439 in the XMM-NEWTON/XMMSLEWCLN catalogue.
Cat. rate1:0.8 (±0.4) ct s-1
Cat. flux2:1.3 (±0.6) ×10-11 erg cm-2 s-1
Observed/Cat. flux≤0 σ
Fading? No (≤1-σ significance).
Near 2MASS source? Yes, 2 matches. Show details.
Near SIMBAD source?Yes - WISE J024046.97-463431.5 is 9.7″ away.
High proper motion star?No.
Catalogue SearchCone search radius 20″ 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