sb25041603: Swift observation summary

Mission:	SVOM/ECLAIRs
SVOM RA:	184.107°
SVOM Dec:	+52.631°
SVOM Err:	10.8 arcmin
T0:	2025-04-16 06:28:04 UT
Galactic:	134.95° +63.67°
Galactic N_H:	2.09× 10²⁰ cm^-2

Sun distance:	114.93°
Sun angle:	10.65 [hr] (East of Sun)
Moon distance:	90.92°
Visibility of this field.

About tiled field analysis.

So far 1 fields have been scheduled for observations. Data are available and processed for 1 of these.

1 fields were processed but not included in the analysis. This is because, after standard processing and the removal of times contaminated by light reflected off the bright Earth, there was too little data (<100 s) for source detection to be performed.

Find an upper limit.

Sources found so far

So far 6 sources have been found in the XRT data. 5 sources match catalogued sources.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Rank³	Dist from SVOM/ECLAIRs pos	Exposure	Notes
1 [details]	12h 15m 39.68s183.91534°	+52° 39′ 08.1″52.65225°	2.6′′ ^*	Good	4 (K)	7.1′	1.7 ks	Matches SIMBAD source: StKM 2-809, 3.4″ away. Matches known X-ray source: LSXPS J121539.2+523907 (from LSXPS), 3.7″ away.
Mean XRT rate: 0.347 (±0.021) ct s^-1 Peak XRT rate: 0.61 (±0.14) ct s^-1 -2.51 σ above the catalogued flux from LSXPS. RASS PSPC 3-σ upper limit: 0.0×10⁰ ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 0.56 (±0.03) ct s^-1 Peak XRT rate converted to PSPC: 0.98 (±0.22) ct s^-1 Mean XRT flux: 7.6 (±0.5) ×10^-12 erg cm^-1s^-1 Peak XRT flux: 1.33 (±0.30) ×10^-11 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position
2 [details]	12h 16m 13.65s184.05689°	+52° 42′ 45.4″52.71260°	3.2′′ ^*	Good	4 (K)	5.2′	1.7 ks	Matches SIMBAD source: 2MASS J12161363+5242459, 2.4″ away. Matches known X-ray source: XMMSL3 J121613.4+524244 (from XMM-NEWTON/XMMSLEWCLN), 1.0993471139231″ away.
Mean XRT rate: 3.8 (±0.6) ×10^-2 ct s^-1 Peak XRT rate: 4.8 (±1.1) ×10^-2 ct s^-1 3.15 σ below the catalogued flux from XMM-NEWTON/XMMSLEWCLN. RASS PSPC 3-σ upper limit: 0.0×10⁰ ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 0.047 (±0.007) ct s^-1 Peak XRT rate converted to PSPC: 0.059 (±0.014) ×10^-2 ct s^-1 Mean XRT flux: 1.78 (±0.27) ×10^-12 erg cm^-1s^-1 Peak XRT flux: 2.2 (±0.5) ×10^-12 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position
3 [details]	12h 16m 23.37s184.09739°	+52° 43′ 54.7″52.73187°	4.7′′ ^*	Good	4 (K)	6.1′	1.7 ks	Matches SIMBAD source: 7C 121355.50+530039.00, 6.2″ away. Matches known X-ray source: 4XMM J121623.6+524400 (from XMM-NEWTON/XMMSSC), 6.1462819229508″ away.
Mean XRT rate: 1.2 (±0.3) ×10^-2 ct s^-1 Peak XRT rate: 1.2 (±0.3) ×10^-2 ct s^-1 6.01 σ below the catalogued flux from XMM-NEWTON/XMMSSC. RASS PSPC 3-σ upper limit: 0.0×10⁰ ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 3.4 (±0.9) ct s^-1 Peak XRT rate converted to PSPC: 3.4 (±0.9) ×10^-3 ct s^-1 Mean XRT flux: 2.0 (±0.5) ×10^-12 erg cm^-1s^-1 Peak XRT flux: 2.0 (±0.5) ×10^-12 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position
4 [details]	12h 15m 44.67s183.93614°	+52° 30′ 52.0″52.51445°	7.1′′ ^*	Good	4 (K)	9.4′	1.7 ks	Matches SIMBAD source: V* EG UMa, 12.3″ away. Matches known X-ray source: LSXPS J121544.0+523058 (from LSXPS), 10.6″ away.
Mean XRT rate: 1.1 (+0.4, -0.3) ×10^-2 ct s^-1 Peak XRT rate: 1.1 (+0.4, -0.3) ×10^-2 ct s^-1 6.89 σ below the catalogued flux from LSXPS. RASS PSPC 3-σ upper limit: 0.0×10⁰ ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 0.021 (+0.007, -0.006) ct s^-1 Peak XRT rate converted to PSPC: 0.021 (+0.007, -0.006) ×10^-2 ct s^-1 Mean XRT flux: 1.8 (+0.6, -0.5) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 1.8 (+0.6, -0.5) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position
5 [details]	12h 16m 54.04s184.22516°	+52° 34′ 19.5″52.57208°	26.8′′	Poor	3 (U)	5.6′	1.7 ks
Mean XRT rate: 4.1 (+2.3, -1.7) ×10^-3 ct s^-1 Peak XRT rate: 4.1 (+2.3, -1.7) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (PSPC count-rate) Products: Light curve \| Spectrum
6 [details]	12h 15m 43.45s183.93106°	+52° 45′ 30.5″52.75846°	23.4′′	Poor	4 (K)	10.0′	1.7 ks	Matches SIMBAD source: SDSS J121544.16+524535.9, 8.5″ away. Matches known X-ray source: 4XMM J121544.1+524535 (from XMM-NEWTON/XMMSSC), 8.2454098405826″ away.
Mean XRT rate: undetermined ct s^-1 Peak XRT rate: undetermined ct s^-1 3.83 σ below the catalogued flux from XMM-NEWTON/XMMSSC. RASS PSPC 3-σ upper limit: 0.0×10⁰ ct s^-1 (PSPC count-rate) Products: Light curve

¹ Radius, 90% confidence.
² Indicates how likely the source is to be real. See the LSXPS documentation.
³ T=Transient Source, O=Outbursting known source, U=Uncatalogued X-ray source, K=Known X-ray source.
^* The position was enhanced using astrometry derived from the Swift UVOT.
^† The position was astrometrically corrected using the XRT sources and the 2MASS catalogue.

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Exposure map

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FITS exposure map.