EP#01709131775: Swift observation summary

Mission:	Einstein Probe/WXT
Einstein Probe RA:	80.748°
Einstein Probe Dec:	-8.833°
Einstein Probe Err:	3.1 arcmin
T0:	2025-02-17 06:56:23 UT
Galactic:	210.87° -23.64°
Galactic N_H:	1.13× 10²¹ cm^-2

Sun distance:	107.46°
Sun angle:	7.34 [hr](East of Sun)
Moon distance:	115.37°
Visibility of this field.
First slew:	2025-02-17 07:02:49 UT
First observation:	2025-02-17 07:02:16 UT
First analysis:	2025-02-17 09:42:30 UT

Data analysed so far:

ObsID: 00019557001 with 1.9 ks exposure.

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.

Details of afterglow candidates

1 sources were found which matches the afterglow criteria.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Rank³	Exposure	Notes	Vizier
1 [details]	05h 22m 57.16s80.73816°	-08° 50′ 13.0″-8.83695°	2.5′′ ^*	Good	2 (O)	0.6′	1.9 ks	The source is fading with 3.5-σ significance. Matches SIMBAD source: RX J0523.0-0850, 1.8″ away. Matches known X-ray source: 2SXPS J052256.7-085017 (from 2SXPS), 7.6″ away.
Mean XRT rate: 2.01 (±0.06) ct s^-1 Peak XRT rate: 4.5 (±1.0) ct s^-1 -4.65 σ above the catalogued flux from 2SXPS. RASS PSPC 3-σ upper limit: 0.0×10⁰ ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 2.42 (±0.08) ct s^-1 Peak XRT rate converted to PSPC: 5.4 (±1.1) ct s^-1 Mean XRT flux: 7.33 (±0.24) ×10^-11 erg cm^-1s^-1 Peak XRT flux: 1.6 (±0.3) ×10^-10 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position

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.

Find an upper limit.

Sources found so far

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

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Rank³	Dist from Einstein Probe/WXT pos	Exposure	Notes
1 [details]	05h 22m 57.16s80.73816°	-08° 50′ 13.0″-8.83695°	2.5′′ ^*	Good	2 (O)	0.6′	1.9 ks	The source is fading with 3.5-σ significance. Matches SIMBAD source: RX J0523.0-0850, 1.8″ away. Matches known X-ray source: 2SXPS J052256.7-085017 (from 2SXPS), 7.6″ away.
Mean XRT rate: 2.01 (±0.06) ct s^-1 Peak XRT rate: 4.5 (±1.0) ct s^-1 -4.65 σ above the catalogued flux from 2SXPS. RASS PSPC 3-σ upper limit: 0.0×10⁰ ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 2.42 (±0.08) ct s^-1 Peak XRT rate converted to PSPC: 5.4 (±1.1) ct s^-1 Mean XRT flux: 7.33 (±0.24) ×10^-11 erg cm^-1s^-1 Peak XRT flux: 1.6 (±0.3) ×10^-10 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position
2 [details]	05h 23m 12.00s80.79999°	-08° 43′ 30.6″-8.72516°	5.3′′ ^*	Good	4 (K)	7.2′	1.9 ks	Matches SIMBAD source: 1RXS J052311.7-084332, 6.2″ away. Matches known X-ray source: 4XMM J052312.1-084330 (from XMM-NEWTON/XMMSSC), 0.78150699448746″ away.
Mean XRT rate: 1.2 (+0.4, -0.3) ×10^-2 ct s^-1 Peak XRT rate: 1.2 (+0.4, -0.3) ×10^-2 ct s^-1 -0.65 σ above 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: 0.014 (+0.005, -0.004) ct s^-1 Peak XRT rate converted to PSPC: 0.014 (+0.005, -0.004) ×10^-2 ct s^-1 Mean XRT flux: 4.8 (+1.6, -1.3) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 4.8 (+1.6, -1.3) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position
3 [details]	05h 23m 03.69s80.76537°	-08° 47′ 34.3″-8.79286°	6.3′′ ^*	Good	4 (K)	2.6′	1.9 ks	Matches known X-ray source: 2SXPS J052303.9-084731 (from 2SXPS), 3.9″ away.
Mean XRT rate: 6.9 (+2.9, -2.4) ×10^-3 ct s^-1 Peak XRT rate: 6.9 (+2.9, -2.4) ×10^-3 ct s^-1 1.37 σ below the catalogued flux from 2SXPS. RASS PSPC 3-σ upper limit: 0.0×10⁰ ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 0.012 (+0.005, -0.004) ×10^-2 ct s^-1 Peak XRT rate converted to PSPC: 0.012 (+0.005, -0.004) ×10^-2 ct s^-1 Mean XRT flux: 1.5 (+0.6, -0.5) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 1.5 (+0.6, -0.5) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position
4 [details]	05h 22m 36.32s80.65134°	-08° 49′ 27.3″-8.82424°	5.7′′	Good	4 (K)	5.8′	1.9 ks	Matches SIMBAD source: TYC 5332-1692-1, 0.5″ away. Matches known X-ray source: 2SXPS J052236.1-084927 (from 2SXPS), 3″ away.
Mean XRT rate: undetermined ct s^-1 Peak XRT rate: undetermined ct s^-1 -1.05 σ above the catalogued flux from 2SXPS. RASS PSPC 3-σ upper limit: 0.0×10⁰ ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: undetermined ct s^-1 Peak XRT rate converted to PSPC: undetermined ct s^-1 Mean XRT flux: undetermined erg cm^-1s^-1 Peak XRT flux: undetermined erg cm^-1s^-1 Products: Light curve \| Spectrum
5 [details]	05h 22m 33.48s80.63951°	-08° 48′ 48.6″-8.81351°	5.8′′	Poor	4 (K)	6.5′	1.9 ks	Matches SIMBAD source: Gaia DR3 3014521104206681344, 3.9″ away. Matches known X-ray source: 4XMM J052233.2-084846 (from XMM-NEWTON/XMMSSC), 3.4940742289259″ away.
Mean XRT rate: undetermined ct s^-1 Peak XRT rate: undetermined ct s^-1 -1.21 σ above 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: undetermined ct s^-1 Peak XRT rate converted to PSPC: undetermined ct s^-1 Mean XRT flux: undetermined erg cm^-1s^-1 Peak XRT flux: undetermined erg cm^-1s^-1 Products: Light curve \| Spectrum

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