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Home > Einstein Probe follow up > EP#01709200800

EP_FIELD00063

EP

63

/EP

EP#01709200800: Swift observation summary

Data analysed so far:

• ObsID: 03000044001 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.

• 3000044 — 772 s of cleaned data taken between 2025-08-27 11:44:19 and 2025-08-27 11:58:29

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]	02h 20m 51.12s35.21299°	+33° 20′ 42.8″33.34522°	2.7′′ *	Good	2 (O)	0.6′	772 s	Matches SIMBAD source: LSPM J0220+3320A, 2.5″ away. Matches known X-ray source: LSXPS J022050.8+332046 (from LSXPS), 1.4″ away.
Mean XRT rate: 1.23 (±0.06) ct s-1 Peak XRT rate: 1.8 (±0.4) ct s-1 -4.36 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: 1.70 (±0.08) ct s-1 Peak XRT rate converted to PSPC: 2.4 (±0.5) ct s-1 Mean XRT flux: 3.97 (±0.19) ×10-11 erg cm-1s-1 Peak XRT flux: 5.7 (±1.3) ×10-11 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 1 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	Vizier
1 [details]	02h 20m 51.12s35.21299°	+33° 20′ 42.8″33.34522°	2.7′′ *	Good	2 (O)	0.6′	772 s	Matches SIMBAD source: LSPM J0220+3320A, 2.5″ away. Matches known X-ray source: LSXPS J022050.8+332046 (from LSXPS), 1.4″ away.
Mean XRT rate: 1.23 (±0.06) ct s-1 Peak XRT rate: 1.8 (±0.4) ct s-1 -4.36 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: 1.70 (±0.08) ct s-1 Peak XRT rate converted to PSPC: 2.4 (±0.5) ct s-1 Mean XRT flux: 3.97 (±0.19) ×10-11 erg cm-1s-1 Peak XRT flux: 5.7 (±1.3) ×10-11 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.

Image

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FITS image.

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Exposure map

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FITS exposure map.