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GRB 250804B — Source 4 (SWIFT J024231.8-463301)

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Image of the XRT detection

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

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Spectrum

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Source details
Rank/Classification: 4: Known X-ray Source
RA (J2000):02h 42m 31.85s (= 40.63272°)
Dec (J2000):-46° 33′ 01.9″ (= -46.5505°)
Error (radius, 90%):6.4″
Detection flag:Good
XRT exposure:1659 s (vignetting corrected)
Peak rate:0.013 (±0.004) ct s-1
Peak flux:5.7 (+1.8, -1.5) ×10-13 erg cm-2 s-1
Mean rate:0.013 (±0.004) ct s-1
Mean flux:5.7 (+1.8, -1.5) ×10-13 erg cm-2 s-1
Has spectral fit?Yes
NH 1.91 × 1020 cm-2
Γ 2.04
Database ID:1458
Possible issues:
Optical Loading: No warning (automatic)
Stray Light: No warning (automatic)
Extended Emission: No warning (automatic)
Catalogue information
Known X-ray emitter?Yes - 1RXS J024232.6-463234 in the ROSAT/RASSFSC catalogue.
Cat. rate1:0.038 (±0.013) ct s-1
Cat. flux2:5.7 (±1.9) ×10-13 erg cm-2 s-1
Observed/Cat. flux≤0 σ
Fading? No (≤1-σ significance).
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