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GRB 210218A — Source 10 (SWIFT J030902.0+352825)

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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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Source 3 has been manually confirmed as the GRB afterglow so these products are no longer updated.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: 3: Uncatalogued X-ray source
RA (J2000):03h 09m 02.03s (= 47.25846°)
Dec (J2000):+35° 28′ 25.1″ (= +35.4736°)
Error (radius, 90%):5.6″
Detection flag:Reasonable
XRT exposure:4.7 ks (vignetting corrected)
Peak rate:6.0 (+3.6, -2.6) ×10-3 ct s-1
Peak flux:2.6 (+1.6, -1.1) ×10-13 erg cm-2 s-1
Mean rate:3.4 (+1.9, -1.3) ×10-3 ct s-1
Mean flux:1.5 (+0.8, -0.6) ×10-13 erg cm-2 s-1
The source is fading with 1.9-σ significance
Has spectral fit?Yes
NH 9.46 × 1021 cm-2
Γ 5.96
Database ID:540
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 limit20.017 ct s-1
Obs rate/Rass UL≤0 σ
Fading? Maybe (1.9-σ significance).
Near 2MASS source? No
Near SIMBAD source?No.
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.