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GRB 210406A — Source 1 (SWIFT J085212.8+762714)

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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

Enhanced position

Image of the UVOT image

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Source details
Rank/Classification: 4: Known X-ray Source
RA (J2000):08h 52m 11.46s (= 133.04774°)
Dec (J2000):+76° 27′ 15.9″ (= +76.4544°)
Error (radius, 90%):2.9″ (enhanced position)
Detection flag:Good
XRT exposure:3.5 ks (vignetting corrected)
Peak rate:0.023 (±0.004) ct s-1
Peak flux:9.7 (±1.8) ×10-13 erg cm-2 s-1
Mean rate:0.022 (±0.004) ct s-1
Mean flux:9.5 (+1.6, -1.5) ×10-13 erg cm-2 s-1
Has spectral fit?Yes
NH 2.14 × 1020 cm-2
Γ 1.33
Database ID:550
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 J085211.0+762711 in the XMM-NEWTON/XMMSLEWCLN catalogue.
Cat. rate1:0.8 (±0.3) ct s-1
Cat. flux2:10 (±4) ×10-12 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?Yes - 1RXS J085211.8+762711 is 5.2″ away.
High proper motion star?No.
Catalogue SearchCone search radius 8″ 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