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GRB 210827A — Source 1 (SWIFT J114021.9+554709)

Build custom XRT products for this source.

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

Back to list of objects in this field.

Source 3 has been manually confirmed as the GRB afterglow so these products are no longer updated.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: 4: Known X-ray Source
RA (J2000):11h 40m 21.70s (= 175.09043°)
Dec (J2000):+55° 47′ 09.6″ (= +55.7860°)
Error (radius, 90%):3.3″ (enhanced position)
Detection flag:Good
XRT exposure:9.5 ks (vignetting corrected)
Peak rate:4.2 (±1.0) ×10-3 ct s-1
Peak flux:1.8 (±0.4) ×10-13 erg cm-2 s-1
Mean rate:3.7 (±0.8) ×10-3 ct s-1
Mean flux:1.6 (±0.3) ×10-13 erg cm-2 s-1
The source is fading with 1.2-σ significance
Has spectral fit?Yes
NH 1.03 × 1020 cm-2
Γ 2.01
Database ID:674
Possible issues:
Optical Loading: No warning (automatic)
Stray Light: No warning (automatic)
Extended Emission: No warning (automatic)
Catalogue information
Known X-ray emitter?Yes - 1WGA J1140.2+5547 in the ROSAT/WGACAT catalogue.
Cat. rate1:8.9 (±2.0) ×10-3 ct s-1
Cat. flux2:1.6 (±0.4) ×10-13 erg cm-2 s-1
Observed/Cat. flux0.5 σ
Fading? Maybe (1.2-σ significance).
Near 2MASS source? No
Near SIMBAD source?No.
High proper motion star?No.
Catalogue SearchCone search radius 9″ 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.