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GRB 170424A — Source 4 (SWIFT J225658.5-451322)

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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):22h 56m 58.67s (= 344.24444°)
Dec (J2000):-45° 13′ 19.6″ (= -45.2221°)
Error (radius, 90%):3.5″ (enhanced position)
Detection flag:Good
XRT exposure:679 s (vignetting corrected)
Peak rate:0.037 (±0.009) ct s-1
Peak flux:1.6 (±0.4) ×10 erg cm-2 s-1
Has spectral fit?Yes
NH 1.40 × 1020 cm-2
Γ 2.24
Database ID:92
Possible issues:
Optical Loading: No warning (automatic)
Stray Light: No warning (automatic)
Extended Emission: No warning (automatic)
Catalogue information
Known X-ray emitter?Yes - XMMSL1 J225658.2-451324 in the XMM-NEWTON/XMMSLEWCLN catalogue.
Cat. rate1:0.78 (±0.30) ct s-1
Cat. flux2:6.0 (±2.3) ×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 - CD-45 14872 is 2.5″ away.
High proper motion star?No.
Catalogue SearchCone search radius 10″ 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