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GRB 210520A — Source 3 (SWIFT J081753.2-691746)

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Image of the XRT detection

This source is detected in 6 blocks. Show all images.

Image of the LC

Spectrum

Image of the spectrum

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Source details
Rank/Classification: 1: Transient source
RA (J2000):08h 17m 53.22s (= 124.47176°)
Dec (J2000):-69° 17′ 46.8″ (= -69.2963°)
Error (radius, 90%):8.6″
Detection flag:Good
XRT exposure:303 s (vignetting corrected)
Peak rate:0.030 (+0.016, -0.011) ct s-1
Peak flux:1.3 (+0.7, -0.5) ×10-12 erg cm-2 s-1
Mean rate:0.030 (+0.016, -0.011) ct s-1
Mean flux:1.3 (+0.7, -0.5) ×10-12 erg cm-2 s-1
Has spectral fit?No
Database ID:577
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 limit20.0×100 ct s-1
Obs rate/Rass UL5.1 σ
Fading? No (≤1-σ significance).
Near 2MASS source? Yes, 1 match. Show details.
Near SIMBAD source?No.
Catalogue SearchCone search radius 25″ 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 assuming a generic AGN spectrum:NH=3×1020 cm-2, Γ=1.7

2MASS objects near the source

ID Position Offset from
XRT source		 J H K