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GRB 250107A — Source 2 (SWIFT J201027.7+452837)

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Image of the XRT detection

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Spectrum

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Source details
Rank/Classification: Marked ‘spurious’ by manual checking. Automated classification: Uncatalogued X-ray source
RA (J2000):20h 10m 27.73s (= 302.61555°)
Dec (J2000):+45° 28′ 37.0″ (= +45.4769°)
Error (radius, 90%):5.5″
Detection flag:Good
XRT exposure:4.7 ks (vignetting corrected)
Peak rate:2.84 (+1.13, -0.91) ×10-3 ct s-1
Peak flux:1.2 (+0.5, -0.4) ×10-13 erg cm-2 s-1
Mean rate:2.84 (+1.13, -0.91) ×10-3 ct s-1
Mean flux:1.2 (+0.5, -0.4) ×10-13 erg cm-2 s-1
Has spectral fit?Yes
NH 6.91 × 1021 cm-2
Γ 7.47
Database ID:1294
Possible issues:
Optical Loading: Spurious source (verified)
Stray Light: No warning (automatic)
Extended Emission: No warning (automatic)
Catalogue information
Known X-ray emitter?No. Get XMM upper limit
Rass upper limit20.022 ct s-1
Obs rate/Rass UL≤0 σ
Fading? No (≤1-σ significance).
Near 2MASS source? Yes, 1 match. Show details.
Near SIMBAD source?Yes - HD 191942 is 3.7″ away.
High proper motion star?No.
Catalogue SearchCone search radius 16″ 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