EP#01709198202: Swift observation summary

Mission:	Einstein Probe/WXT
Einstein Probe RA:	346.464°
Einstein Probe Dec:	-7.772°
Einstein Probe Err:	3.1 arcmin
T0:	2025-08-02 12:44:54 UT
Galactic:	65.78° -58.38°
Galactic N_H:	3.66× 10²⁰ cm^-2

Sun distance:	145.55°
Sun angle:	9.74 [hr] (West of Sun)
Moon distance:	113.22°
Visibility of this field.
First slew:	2025-08-02 13:48:39 UT
First observation:	2025-08-02 13:43:16 UT
First analysis:	2025-08-02 19:01:52 UT

Data analysed so far:

ObsID: 00019977001 with 1.8 ks exposure.

About tiled field analysis.

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

19977 — 1.8 ks of cleaned data taken between 2025-08-02 13:43:45 and 2025-08-02 14:16:26

Details of afterglow candidates

1 sources were found which matches the afterglow criteria.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Rank³	Dist from Einstein Probe/WXT pos	Exposure	Notes	Vizier
1 [details]	23h 05m 52.99s346.47079°	-07° 45′ 49.3″-7.76370°	2.6′′ ^*	Good	2 (O)	0.6′	1.8 ks	Matches SIMBAD source: BD-08 6022, 2.6″ away. Matches known X-ray source: 1RXS J230552.9-074545 (from ROSAT/RASSBSC), 4.9382929813337″ away.
Mean XRT rate: 2.81 (±0.08) ct s^-1 Peak XRT rate: 5.7 (±1.3) ct s^-1 -4.39 σ above the catalogued flux from ROSAT/RASSBSC. RASS PSPC 3-σ upper limit: 0.0×10⁰ ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 3.46 (±0.10) ct s^-1 Peak XRT rate converted to PSPC: 7.1 (±1.6) ct s^-1 Mean XRT flux: 1.05 (±0.03) ×10^-10 erg cm^-1s^-1 Peak XRT flux: 2.1 (±0.5) ×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 3 sources have been found in the XRT data. 2 sources match catalogued sources.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Rank³	Dist from Einstein Probe/WXT pos	Exposure	Notes
1 [details]	23h 05m 52.99s346.47079°	-07° 45′ 49.3″-7.76370°	2.6′′ ^*	Good	2 (O)	0.6′	1.8 ks	Matches SIMBAD source: BD-08 6022, 2.6″ away. Matches known X-ray source: 1RXS J230552.9-074545 (from ROSAT/RASSBSC), 4.9382929813337″ away.
Mean XRT rate: 2.81 (±0.08) ct s^-1 Peak XRT rate: 5.7 (±1.3) ct s^-1 -4.39 σ above the catalogued flux from ROSAT/RASSBSC. RASS PSPC 3-σ upper limit: 0.0×10⁰ ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 3.46 (±0.10) ct s^-1 Peak XRT rate converted to PSPC: 7.1 (±1.6) ct s^-1 Mean XRT flux: 1.05 (±0.03) ×10^-10 erg cm^-1s^-1 Peak XRT flux: 2.1 (±0.5) ×10^-10 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position
2 [details]	23h 05m 09.60s346.29000°	-07° 41′ 33.3″-7.69259°	6.1′′ ^*	Good	3 (U)	11.4′	1.8 ks	This source may be affected by optical loading Matches SIMBAD source: * 83 Aqr, 6.4″ away.
Mean XRT rate: 8.3 (+3.5, -2.8) ×10^-3 ct s^-1 Peak XRT rate: 8.3 (+3.5, -2.8) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 1.73 ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 3.3 (+1.4, -1.1) ×10^-4 ct s^-1 Peak XRT rate converted to PSPC: 3.3 (+1.4, -1.1) ×10^-4 ct s^-1 Mean XRT flux: 6.0 (+2.5, -2.0) ×10^-10 erg cm^-1s^-1 Peak XRT flux: 6.0 (+2.5, -2.0) ×10^-10 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position
3 [details]	23h 05m 28.75s346.36979°	-07° 42′ 36.1″-7.71003°	6.3′′	Poor	3 (U)	6.7′	1.8 ks
Mean XRT rate: undetermined ct s^-1 Peak XRT rate: undetermined ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (PSPC count-rate) Products: Light curve \| Spectrum

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Exposure map

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FITS exposure map.