EP#01709251871: Swift observation summary

Mission:	Einstein Probe/WXT
Einstein Probe RA:	156.496°
Einstein Probe Dec:	-41.087°
Einstein Probe Err:	3.1 arcmin
T0:	2026-01-22 00:00:14 UT
Galactic:	275.52° +13.92°
Galactic N_H:	8.86× 10²⁰ cm^-2

Sun distance:	111.99°
Sun angle:	9.83 [hr](West of Sun)
Moon distance:	130.56°
Visibility of this field.
First slew:	2026-01-22 00:31:18 UT
First observation:	2026-01-22 00:30:44 UT
First analysis:	2026-01-22 02:51:09 UT

Data analysed so far:

ObsID: 03000383001 with 1.5 ks exposure.

About tiled field analysis.

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

3000383 — 1.5 ks of cleaned data taken between 2026-01-22 00:31:12 and 2026-01-22 06:27:39

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]	10h 26m 01.96s156.50815°	-41° 05′ 53.1″-41.09807°	2.4′′ ^*	Good	2 (O)	0.9′	1.5 ks	Matches SIMBAD source: [M81] I-308, 4.2″ away. Matches known X-ray source: 1RXS J102603.1-410550 (from ROSAT/RASSBSC), 11.457874364849″ away.
Mean XRT rate: 4.69 (±0.15) ct s^-1 Peak XRT rate: 9.6 (±2.1) ct s^-1 -4.64 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: 6.20 (±0.19) ct s^-1 Peak XRT rate converted to PSPC: 12.7 (±2.7) ct s^-1 Mean XRT flux: 1.59 (±0.05) ×10^-10 erg cm^-1s^-1 Peak XRT flux: 3.3 (±0.7) ×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 2 sources have been found in the XRT data. 1 sources match catalogued sources.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Rank³	Dist from Einstein Probe/WXT pos	Exposure	Notes
1 [details]	10h 26m 01.96s156.50815°	-41° 05′ 53.1″-41.09807°	2.4′′ ^*	Good	2 (O)	0.9′	1.5 ks	Matches SIMBAD source: [M81] I-308, 4.2″ away. Matches known X-ray source: 1RXS J102603.1-410550 (from ROSAT/RASSBSC), 11.457874364849″ away.
Mean XRT rate: 4.69 (±0.15) ct s^-1 Peak XRT rate: 9.6 (±2.1) ct s^-1 -4.64 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: 6.20 (±0.19) ct s^-1 Peak XRT rate converted to PSPC: 12.7 (±2.7) ct s^-1 Mean XRT flux: 1.59 (±0.05) ×10^-10 erg cm^-1s^-1 Peak XRT flux: 3.3 (±0.7) ×10^-10 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position
2 [details]	10h 26m 29.41s156.62253°	-41° 07′ 17.5″-41.12153°	7.9′′	Poor	3 (U)	6.1′	1.5 ks
Mean XRT rate: undetermined ct s^-1 Peak XRT rate: undetermined ct s^-1 RASS PSPC 3-σ upper limit: 0.04 ct s^-1 (PSPC count-rate) Products: Light curve

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Exposure map

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FITS exposure map.