EP#01709179396: Swift observation summary

Mission:	Einstein Probe/WXT
Einstein Probe RA:	163.085°
Einstein Probe Dec:	-89.029°
Einstein Probe Err:	3.2 arcmin
T0:	2025-06-25 09:21:20 UT
Galactic:	302.39° -26.28°
Galactic N_H:	9.25× 10²⁰ cm^-2

Sun distance:	113.04°
Sun angle:	4.40 [hr] (East of Sun)
Moon distance:	117.97°
Visibility of this field.
First slew:	2025-06-25 11:30:18 UT
First observation:	2025-06-25 11:29:44 UT
First analysis:	2025-06-25 16:30:45 UT

Data analysed so far:

ObsID: 00019890001 with 0.8 ks exposure.

About tiled field analysis.

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

19890 — 849 s of cleaned data taken between 2025-06-25 11:30:13 and 2025-06-25 11:47:21

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]	10h 50m 04.77s162.51986°	-88° 59′ 54.4″-88.99845°	3.0′′ ^*	Good	4 (K)	1.9′	849 s	Matches SIMBAD source: [WMK2011] CSTAR 38580, 1.1″ away. Matches known X-ray source: 1RXS J105047.2-885952 (from ROSAT/RASSBSC), 9.0652818061801″ away.
Mean XRT rate: 0.175 (±0.017) ct s^-1 Peak XRT rate: 0.20 (±0.04) ct s^-1 -2.71 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: 0.277 (±0.027) ct s^-1 Peak XRT rate converted to PSPC: 0.32 (±0.07) ct s^-1 Mean XRT flux: 4.3 (±0.4) ×10^-12 erg cm^-1s^-1 Peak XRT flux: 5.0 (±1.1) ×10^-12 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position
2 [details]	10h 30m 29.15s157.62146°	-88° 50′ 10.9″-88.83636°	4.9′′ ^*	Good	3 (U)	13.1′	849 s
Mean XRT rate: 1.7 (+0.7, -0.6) ×10^-2 ct s^-1 Peak XRT rate: 1.7 (+0.7, -0.6) ×10^-2 ct s^-1 RASS PSPC 3-σ upper limit: 1.13 ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 5.4 (+2.2, -1.7) ct s^-1 Peak XRT rate converted to PSPC: 5.4 (+2.2, -1.7) ×10^-4 ct s^-1 Mean XRT flux: 1.3 (+0.5, -0.4) ×10^-10 erg cm^-1s^-1 Peak XRT flux: 1.3 (+0.5, -0.4) ×10^-10 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position
3 [details]	11h 19m 18.87s169.82864°	-88° 53′ 41.7″-88.89492°	6.0′′	Good	4 (K)	10.9′	849 s	Matches SIMBAD source: GSC2.3 S3Y8000318, 1.9″ away. Matches known X-ray source: 1RXS J111742.7-885347 (from ROSAT/RASSFSC), 28.397204308932″ away.
Mean XRT rate: 8 (+5, -3) ×10^-3 ct s^-1 Peak XRT rate: 8 (+5, -3) ×10^-3 ct s^-1 2.97 σ below the catalogued flux from ROSAT/RASSFSC. RASS PSPC 3-σ upper limit: 0.0×10⁰ ct s^-1 (PSPC count-rate) Products: Light curve \| Spectrum

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.

Image

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FITS image.

Exposure map

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FITS exposure map.