LSXPS J203902.4+421955

[Spectral/flux information | Temporal information | External catalogue matches | Detections | Non-detections ]

This image is 160 pixels (=6.3′ to a side).
LSXPS J203902.4+421955 is indicated by the cross-hairs. What do the colours mean?The next nearest source is 30″ away.

Detection flag:: Good
Total exposure:: 21 ks
RA (J2000):: 20^h 39^m 02.47^s=309.7603°
Dec (J2000):: +42° 19′ 55.7″=+42.3321°
Err₉₀:: 6.9′′(Star trackers)
l:: +81° 41′ 10.6″=81.6863°
b:: +00° 32′ 17.8″=+0.5383°
Mean count rate: 2.2 (+0.8, -0.7) ×10^-3 ct s^-1
Galactic N_H: 1.2×10²² cm^-2
HRs: HR1=0.0 (+1.0, -0.5)
HR2=0.9425 (+0.0575, -0.0018)
Observed between:: and 2026-02-05 10:26
Present in:: 52 datasets (total)
1 datasets (with blind detections)
42 datasets (count-rate detections)
External catalogue matches:: 3
Search Vizier | Simbad.
LSXPS ID: 129022

Nearest neighbour

LSXPS J203900.8+421931 — 30″ away

Nearest 'OK' neighbour

LSXPS J203900.8+421931 — 30″ away

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Spectral / Flux information

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Temporal Information

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Band	Total (0.3—10 keV)	Soft (0.3—1 keV)	Medium (1—2 keV)	Hard (2—10 keV)
Mean rate (ct s^-1)	2.2 (+0.8, -0.7) ×10^-3	0.00 (+1.87, -0.00) ×10^-4	0.00 (+1.87, -0.00) ×10^-4	2.7 (+0.8, -0.7) ×10^-3
Peak rate (ct s^-1)	5.8 (+2.9, -2.3) ×10^-3	0.00 (+1.87, -0.00) ×10^-4	0.00 (+1.87, -0.00) ×10^-4	1.52 (+1.45, -0.89) ×10^-2
Detected?	Blind: No Retrospective: Yes	Blind: No Retrospective: No	Blind: No Retrospective: No	Yes
3 σ UL (ct s^-1)	< 4.82× 10^-3	< 9.47× 10^-4	< 9.47× 10^-4	N/A
Counts detected	19	0	0	19
BG counts	5.535	1.401	1.375	2.731
Corr fact	1.66	1.66	1.66	1.66
P_const,χ	2.59×10^-3 (obs) 0.15 (snapshot)	2.59×10^-3 (obs) 1.00 (snapshot)	2.59×10^-3 (obs) 1.00 (snapshot)	2.90×10^-4 (obs) 0.15 (snapshot)