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GRB 210520A — Source 1 (SWIFT J080837.8-694711)

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Image of the XRT detection

This source is detected in 9 blocks. Show all images.

Image of the LC

Spectrum

Image of the spectrum

Enhanced position

Image of the UVOT image

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Source details
Rank/Classification: 4: Known X-ray Source
RA (J2000):08h 08m 37.75s (= 122.15729°)
Dec (J2000):-69° 47′ 11.2″ (= -69.7865°)
Error (radius, 90%):4.7″ (enhanced position)
Detection flag:Good
XRT exposure:303 s (vignetting corrected)
Peak rate:0.029 (+0.014, -0.011) ct s-1
Peak flux:1.3 (+0.6, -0.5) ×10-12 erg cm-2 s-1
Mean rate:0.029 (+0.014, -0.011) ct s-1
Mean flux:1.3 (+0.6, -0.5) ×10-12 erg cm-2 s-1
Has spectral fit?Yes
NH 1.76 × 1021 cm-2
Γ 6.87
Database ID:575
Possible issues:
Optical Loading: No warning (automatic)
Stray Light: No warning (automatic)
Extended Emission: No warning (automatic)
Catalogue information
Known X-ray emitter?Yes - XMMSL2 J080836.9-694717 in the XMM-NEWTON/XMMSLEWCLN catalogue.
Cat. rate1:0.9 (±0.4) ct s-1
Cat. flux2:2.0 (±1.0) ×10-11 erg cm-2 s-1
Observed/Cat. flux≤0 σ
Fading? No (≤1-σ significance).
Near 2MASS source? Yes, 1 match. Show details.
Near SIMBAD source?No.
High proper motion star?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.

2MASS objects near the source

ID Position Offset from
XRT source		 J H K