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GRB 240109A — Source 4 (SWIFT J200440.3+162714)

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Image of the XRT detection

This source is detected in 1 block. Show all images.

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Spectrum

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Source details
Rank/Classification: 4: Known X-ray Source
RA (J2000):20h 04m 40.35s (= 301.16814°)
Dec (J2000):+16° 27′ 14.6″ (= +16.4541°)
Error (radius, 90%):8.6″
Detection flag:Good
XRT exposure:1341 s (vignetting corrected)
Peak rate:0.024 (±0.005) ct s-1
Peak flux:1.01 (±0.23) ×10-12 erg cm-2 s-1
Mean rate:0.024 (±0.005) ct s-1
Mean flux:1.01 (±0.23) ×10-12 erg cm-2 s-1
Has spectral fit?Yes
NH 3.12 × 1021 cm-2
Γ 2.99
Database ID:1134
Possible issues:
Optical Loading: No warning (automatic)
Stray Light: No warning (automatic)
Extended Emission: No warning (automatic)
Catalogue information
Known X-ray emitter?Yes - 2RXP J200439.8+162719 in the ROSAT/ROSPSPC catalogue.
Cat. rate1:0.03 (±0.00) ct s-1
Cat. flux2:5.80 (±0.00) ×10-13 erg cm-2 s-1
Observed/Cat. flux≤0 σ
Fading? No (≤1-σ significance).
Near 2MASS source? Yes, 4 matches. Show details.
Near SIMBAD source?Yes - HD 354645 is 5.1″ away.
High proper motion star?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 using the automatic power-law spectral fit described above.

2MASS objects near the source

ID Position Offset from
XRT source		 J H K