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GRB 220921A — Source 8 (SWIFT J042521.1-402620)

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

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Source 1 has been manually confirmed as the GRB afterglow so these products are no longer updated.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):04h 25m 21.14s (= 66.33810°)
Dec (J2000):-40° 26′ 20.4″ (= -40.4390°)
Error (radius, 90%):7.1″
Detection flag:Good
XRT exposure:887 s (vignetting corrected)
Peak rate:0.014 (+0.006, -0.005) ct s-1
Peak flux:5.8 (+2.7, -2.1) ×10-13 erg cm-2 s-1
Mean rate:0.014 (+0.006, -0.005) ct s-1
Mean flux:5.8 (+2.7, -2.1) ×10-13 erg cm-2 s-1
Has spectral fit?Yes
NH 2.02 × 1022 cm-2
Γ 9.93
Database ID:937
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 J042522.2-402626 in the ROSAT/RASSFSC catalogue.
Cat. rate1:0.028 (±0.008) ct s-1
Cat. flux2:2.9 (±0.8) ×10-13 erg cm-2 s-1
Observed/Cat. flux2.3 σ
Fading? No (≤1-σ significance).
Near 2MASS source? Yes, 1 match. Show details.
Near SIMBAD source?Yes - CD-40 1384 is 7.8″ away.
High proper motion star?No.
Catalogue SearchCone search radius 21″ 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