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GRB 210218A — Source 3 (SWIFT J030917.6+351926)

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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

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This source has been manually confirmed as the GRB afterglow so these products are no longer updated. The up-to-date data for the afterglow are now available through the main GRB results area for this GRB.

Source details
Rank/Classification: 2: Outbursting source
RA (J2000):03h 09m 17.67s (= 47.32362°)
Dec (J2000):+35° 19′ 26.5″ (= +35.3240°)
Error (radius, 90%):4.8″
Detection flag:Good
XRT exposure:6.6 ks (vignetting corrected)
Peak rate:5.6 (+2.0, -1.6) ×10-3 ct s-1
Peak flux:2.4 (+0.8, -0.7) ×10-13 erg cm-2 s-1
Mean rate:5.6 (+2.0, -1.6) ×10-3 ct s-1
Mean flux:2.4 (+0.8, -0.7) ×10-13 erg cm-2 s-1
The source is fading with 3.1-σ significance
Has spectral fit?Yes
NH 1.18 × 1022 cm-2
Γ 5.46
Database ID:530
Possible issues:
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 limit20.020 ct s-1
Obs rate/Rass UL≤0 σ
Fading? Yes (3.1-σ difference between at least one detection and a later detection or upper limit).
Near 2MASS source? No
Near SIMBAD source?No.
Catalogue SearchCone search radius 14″ 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.